M0 Signal Puzzle

Reddit user u/NihilAgency posted on Reddit which lead to nihil.agency/signals/M0.wav.

Contact

In the source of http://nihil.agency there is the comment:

<!-- contact at website -->

which gives us the email address ycnega.lihin|tcatnoc#ycnega.lihin|tcatnoc where we found Livingston.

M0

The M0 audio contains a 1414Hz signal which had to be converted to a binary sequence.

M0%20analysis.png

This was done manually using Audacity and Paint.net, but the binary has since been made available as nihil.agency/signals/M0.txt:

00000101001101010100001100110000111111111111111111111111111111111111111000011001100100000000000000000000000010000111110000110011001000000010101010000000001100001111100001100110010001010000010100000000111111011111000011001100101000100010001001011001111110111110000110011001010101010101010100100001100001111100001100110010000000000000000000000001000011111000011001100111111111111111111111111111111111110000110011000011001100001111111111111111111111111111111111111110000110011001000000000000000000000000010001111100001100110010000000101010100000000000110011111000011001100100010100000101000000001111110111110000110011001010001000100010010110011111101111100001100110010101010101010101001000000110011111000011001100100000000000000000000000001000111110000110011001111111111111111111111111111111111100001100110000110011000011111111111111111111111111111111111111110000110011001000000000000000000000000001000111110000110011001000000010010010010000000001100111110000110011001010010000000010010001001111110111110000110011001001011001011001011000001111110111110000110011001010010010010010010010000001100111110000110011001000000000000000000000000001000111110000110011001111111111111111111111111111111111110000110011000011001100001111111111111111111111111111111111111111000011001100100000000000000000000000001000011111000011001100100000000000000000000000011000011111000011001100100000000000000000000000111111011111000011001100100000000000000000000000111111011111000011001100100000000000000000000000011000011111000011001100100000000000000000000000001000011111000011001100111111111111111111111111111111111111000011001100111100001100110000110011000011110000

When contacting ycnega.lihin|tcatnoc#ycnega.lihin|tcatnoc, a response came from ycnega.lihin|an#ycnega.lihin|an:

NA
I haven't made much progress on it, I've found some repeating patterns "1111000011001100" and "0011001100001111" but haven't been able to make much progress from that.

If you treat "1111000011001100" as "new line" and "0011001100001111" as "new sub-message", and add some line breaks to the binary it looks like this:

0000
0101001101010100
0011001100001111
11111111111111111111111111111111111000011001100
10000000000000000000000001000011111000011001100
10000000101010100000000011000011111000011001100
10001010000010100000000111111011111000011001100
10100010001000100101100111111011111000011001100
10101010101010101001000011000011111000011001100
10000000000000000000000001000011111000011001100
11111111111111111111111111111111111000011001100
0011001100001111
11111111111111111111111111111111111000011001100
10000000000000000000000000100011111000011001100
10000000101010100000000000110011111000011001100
10001010000010100000000111111011111000011001100
10100010001000100101100111111011111000011001100
10101010101010101001000000110011111000011001100
10000000000000000000000000100011111000011001100
11111111111111111111111111111111111000011001100
0011001100001111
111111111111111111111111111111111111000011001100
100000000000000000000000000100011111000011001100
100000001001001001000000000110011111000011001100
101001000000001001000100111111011111000011001100
100101100101100101100000111111011111000011001100
101001001001001001001000000110011111000011001100
100000000000000000000000000100011111000011001100
111111111111111111111111111111111111000011001100
0011001100001111
111111111111111111111111111111111111000011001100
100000000000000000000000001000011111000011001100
100000000000000000000000011000011111000011001100
100000000000000000000000111111011111000011001100
100000000000000000000000111111011111000011001100
100000000000000000000000011000011111000011001100
100000000000000000000000001000011111000011001100
111111111111111111111111111111111111000011001100
1111000011001100
0011001100001111
0000

The "0000" at the start and end, and the "0101001101010100" at the beginning appear to be part of the message packaging. If you remove those, remove the two patterns mentioned above, and swap the "0" and "1" for different characters, a picture becomes visible:

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                        ■    ■
■       ■ ■ ■ ■         ■■    ■
■   ■ ■     ■ ■        ■■■■■■ ■
■ ■   ■   ■   ■  ■ ■■  ■■■■■■ ■
■ ■ ■ ■ ■ ■ ■ ■ ■  ■    ■■    ■
■                        ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■   ■
■       ■ ■ ■ ■           ■■  ■
■   ■ ■     ■ ■        ■■■■■■ ■
■ ■   ■   ■   ■  ■ ■■  ■■■■■■ ■
■ ■ ■ ■ ■ ■ ■ ■ ■  ■      ■■  ■
■                         ■   ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                          ■   ■
■       ■  ■  ■  ■         ■■  ■
■ ■  ■        ■  ■   ■  ■■■■■■ ■
■  ■ ■■  ■ ■■  ■ ■■     ■■■■■■ ■
■ ■  ■  ■  ■  ■  ■  ■      ■■  ■
■                          ■   ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■    ■
■                        ■■    ■
■                       ■■■■■■ ■
■                       ■■■■■■ ■
■                        ■■    ■
■                         ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

Inside the first three boxes are numbers, represented in binary:

         ■  ■  ■  ■                  ■   ■   ■   ■                   ■   ■   ■   ■              
   ■  ■        ■  ■          ■   ■           ■   ■    ■   ■  ■■  ■■   ■   ■  ■■  ■■   ■   ■  ■■ 
■     ■     ■     ■   ■  ■■   ■  ■■   ■  ■■   ■  ■■      ■       ■       ■       ■    ■  ■■   ■ 
■  ■  ■  ■  ■  ■  ■  ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■   ■  
1  2  3  4  5  6  7  8   9   10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26 ...

The 1st box implies that the numbers 1-9 are received.
The 2nd box implies that the numbers 1-9 are sent.
The 3rd box implies that the numbers 10-16 are sent.
The 4th box implies that the sender is now waiting to receive.

NA
Brilliant work, the inner sequence almost reminds me of the one that was in the news in 1974. I'll try seeing if I can find it again.

If you have a sequence (0s and 1s) that you think we should transmit, we're working on an encoder to convert binary into an audio signal (and a decoder to decode the audio signal, though that's been taking longer).

"1974" is a reference to the Arecibo Message (external link) that was beamed into space in 1974. It used the same notation for numbers (external link) as is used in M0, and it included the numbers 1-9, indicating that M0 might be a response to the Aricebo Message. When questioned about the origin of the M0 signal, NA replied:

NA
Unfortunately the signal likely has terrestrial origins, we're just not sure who is sending it.

X0 - Response to M0

Since NA invited us to transmit a signal, we suggested the following (now also available as nihil.agency/signals/X0.txt):

000001010011010101000011001100001111111111111111111111111111111111111110000110011001000000000000000000000000100001111100001100110010000000101010100000000011000011111000011001100100010100000101000000001111110111110000110011001010001000100010010110011111101111100001100110010101010101010101001000011000011111000011001100100000000000000000000000010000111110000110011001111111111111111111111111111111111100001100110000110011000011111111111111111111111111111111111111110000110011001000000000000000000000000010000111110000110011001000000010010010010000000110000111110000110011001010010000000010010001001111110111110000110011001001011001011001011000001111110111110000110011001010010010010010010010000110000111110000110011001000000000000000000000000010000111110000110011001111111111111111111111111111111111110000110011000011001100001111111111111111111111111111111111111111000011001100100000000000000000000000001000011111000011001100100000000001001001001000011000011111000011001100100101101100100101101100111111011111000011001100101000001000001000001000111111011111000011001100101001001001001001001000011000011111000011001100100000000000000000000000001000011111000011001100111111111111111111111111111111111111000011001100001100110000111111111111111111111111111111111111111100001100110010000000000000000000000000010001111100001100110010000000000000000000000000011001111100001100110010000000000000000000000011111101111100001100110010000000000000000000000011111101111100001100110010000000000000000000000000011001111100001100110010000000000000000000000000010001111100001100110011111111111111111111111111111111111100001100110000110011000011110000

which translates to:
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                        ■    ■
■       ■ ■ ■ ■         ■■    ■
■   ■ ■     ■ ■        ■■■■■■ ■
■ ■   ■   ■   ■  ■ ■■  ■■■■■■ ■
■ ■ ■ ■ ■ ■ ■ ■ ■  ■    ■■    ■
■                        ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■    ■
■       ■  ■  ■  ■       ■■    ■
■ ■  ■        ■  ■   ■  ■■■■■■ ■
■  ■ ■■  ■ ■■  ■ ■■     ■■■■■■ ■
■ ■  ■  ■  ■  ■  ■  ■    ■■    ■
■                         ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■    ■
■          ■  ■  ■  ■    ■■    ■
■  ■ ■■ ■■  ■  ■ ■■ ■■  ■■■■■■ ■
■ ■     ■     ■     ■   ■■■■■■ ■
■ ■  ■  ■  ■  ■  ■  ■    ■■    ■
■                         ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                          ■   ■
■                          ■■  ■
■                       ■■■■■■ ■
■                       ■■■■■■ ■
■                          ■■  ■
■                          ■   ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

The 1st box states that we're sending the numbers 1-9.
The 2nd box states that we're sending the numbers 10-16.
The 3rd box states that we're sending the numbers 17-23.
The 4th box implies that we're waiting to receive something.

The idea was to communicate that we understood the message from M0 by taking the numbers from M0 and continuing to count. And we got a response:

NA
Fascinating, transmitting that signal has resulted in the signal changing, it's still a repeating sequence:
https://nihil.agency/signals/M1.wav
It seems like the signal is centered on 1414 Hz, we're close to having a decode to pick out that signal and turn it into a binary string. I'll let you know once we have it working.

M1

The M1 audio was decoded to binary the same way as M0, and binary is now available as nihil.agency/signals/M1.txt. The message looks like:

 ■                           ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
 ■                           ■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■  ■
■                         ■   ■ ■■■
■  ■              ■■■■    ■■  ■  ■
■  ■■  ■■      ■■ ■  ■ ■■■■■■ ■  ■
■  ■■  ■■   ■  ■■ ■  ■ ■■■■■■ ■  ■
■  ■       ■      ■■■■    ■■  ■  ■
■                         ■   ■ ■■■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■  ■

 ■                            ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
 ■                            ■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■  ■
■                              ■ ■■■
■                          ■   ■  ■
■   ■             ■■■■     ■■  ■  ■
■      ■■  ■   ■■ ■  ■  ■■■■■■ ■  ■
■      ■■   ■  ■■ ■  ■  ■■■■■■ ■  ■
■  ■       ■      ■■■■     ■■  ■  ■
■                          ■   ■  ■
■                              ■ ■■■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■  ■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                     ■    ■
■  ■       ■         ■■    ■
■  ■   ■■  ■   ■■   ■■■■■■ ■
■  ■■  ■■  ■■  ■■   ■■■■■■ ■
■  ■       ■         ■■    ■
■                     ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■

The 1st box contains what translates to "31, 8, box (send)".
The 2nd box contains what translates to "32, 10, box (send)".
The 3rd box contains what translates to "15, 15, (receive)".

The numbers match the dimensions of the boxes, so this appears to be a request for a 15x15 box. We composed another reply.

X1 - Response to M1

We composed and sent what is now available as X1.txt. The message looks like:

 ■           ■
■■■■■■■■■■■■■■■
 ■           ■

■■■■■■■■■■■■■■■  ■
■             ■ ■■■
■        ■    ■  ■
■       ■■    ■  ■
■      ■■■■■■ ■  ■
■      ■■■■■■ ■  ■
■       ■■    ■  ■
■        ■    ■  ■
■             ■  ■
■ ■       ■   ■  ■
■ ■   ■■  ■   ■  ■
■ ■■  ■■  ■■  ■  ■
■ ■       ■   ■  ■
■             ■ ■■■
■■■■■■■■■■■■■■■  ■

■■■■■■■■■■■■■■■■■■■■■■■■
■                 ■    ■
■    ■ ■  ■  ■   ■■    ■
■            ■  ■■■■■■ ■
■  ■ ■  ■  ■ ■■ ■■■■■■ ■
■ ■  ■ ■  ■  ■   ■■    ■
■                 ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                                 ■    ■
■ ■     ■    ■      ■    ■  ■    ■■    ■
■ ■■      ■■     ■■    ■ ■   ■  ■■■■■■ ■
■ ■   ■ ■    ■ ■    ■ ■■ ■■ ■   ■■■■■■ ■
■ ■  ■  ■ ■  ■ ■ ■  ■ ■  ■  ■    ■■    ■
■                                 ■    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■
■                  ■   ■
■                  ■■  ■
■               ■■■■■■ ■
■               ■■■■■■ ■
■                  ■■  ■
■                  ■   ■
■■■■■■■■■■■■■■■■■■■■■■■■

The 1st box is the 15x15 box that was requested.
The 2nd box contains the numbers corresponding to the letters "hello".
The 3rd box contains the numbers corresponding to the letters "whereareyou".
The 4th box is a request for a response.

The idea was to
1) test if letters would be recognized
2) test if English would be recognized
3) get an answer to "where are you?"

If this signal is truly terrestrial as NA assumes, this should work. We got another response.

M2

NA
We've transmitted your message: https://nihil.agency/signals/X1.wav
And received: https://nihil.agency/signals/M2.wav

We have a signal decoder working to translate the audio to binary, and are working on translating to an image. Though there's something odd about the latest signal (it sounds like there is something else in the audio). What we've successfully translated (the 1414 Hz signal) is at:
https://nihil.agency/signals/X1.txt and https://nihil.agency/signals/M2.txt

From this point, the earlier .txt files became available so we no longer have to manually extract the binary from the audio. After audio-editing M2.wav to isolate the second signal and submitting that to NA, they updated their decoder.

NA
We have now have now updated our signal decoder to try decoding 1414 Hz and 1815 Hz.
We've updated the .txt files accordingly.

M2 1814 Hz

This signal starts differently, with an extra few zeroes at "0000 00000 0101001101010100", but otherwise is similar to previous signals. Once stripped of all the extra stuff, it looks like:

00000000000000
000000000000000
00000000000000

000000000000000000
0000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
0000000000000000000
000000000000000000

000
000000000000
000000000000000000000000000
000000000000000000000000000
000000000000000000000

0000000000
000000000000
0000000000000
00000000000000
00000000000000
000000000000000
000000000000000
000000000000000
000000000000000
000000000000000
00000000000000
00000000000000
0000000000000
000000000000
0000000000

0000000000
000000000000
0000000000000
00000000000000
00000000000000
000000000000000
000000000000000
000000000000000
000000000000000
000000000000000
00000000000000
00000000000000
0000000000000
000000000000
0000000000

0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000
0000000000000000000000

So it is filled with a bunch of zeroes, and no ones at all.

M2 1414 Hz

This signal starts normally with "0000 0101001101010100" but ends with extra zeroes at "00000 0000". Also, it does not contain any "1111000011001100" (new line) and "0011001100001111" (new sub-message) sequences. However, if we put line breaks at the same spots as above in the 1814 signal, it looks like this:

010000000000010001011001100001
1111111111111110010001100110111
010000000000010010000001010101
0111011000110110
1111111111111110011101010111110000
10000000000000101111110110111110110
1000000001000010010101100001000110
1000000011000010010100001100110010
1000000111111010010100110100110100
1000000111111010010100110101001100
1000000011000010011100111100010111
1000000001000010011001101110100111
1000000000000010011101111101001101
1010000000100010011010011010011010
1010001100100010010010010001111110
1011001100110010010111011010010001
1010000000100010010010111111011011
10000000000000101110001110000100110
1111111111111110010010110011010001
0101010101111000
1110100010000000101
1110000000011010111111111011
1110010010000010010010010011011000111110101
1110000000000000010010010010100011000011010
1110000000000000010010101111011111110
1000110111101101
00000111111110110100000011
0001110001110110100001111010
00111100001111110100001001111
011110000111110101001111010111
011110000111111111111010111101
1111000000000011011111011100000
1101000000111111011111001110110
1100000000111110010111111110010
1111000000011111110001011110010
1111100000001110101010000010110
011100000000111110010111101100
011100000000110000000001010110
00110000000110101000001111100
0001111111110000010100010111
00000111111100001011010110
0011100101111111
00000111111010000011000010
0001100000110110001001100100
00100001000011000110111011110
010000000000011101011010101100
010000010000011000111001000110
1000001110000011101000110011010
1000011111000011001010111000011
1000001110000011011101111011010
1000001110000010010111101000000
1000001110000011100100011000000
010000000000010110010000000000
010000000000011111001000011000
00100000000011001011000101101
0001100000110001001001110111
00000111111110001000110111
1100111100001011
11111111111111111111110011001110100011
10000000000000000000011100010010000011
10000000000000000000011010110111110101
10000011000000110010010000100011101111
10000011001000110000010111010110011001
10100000001000000000010010101011000000
10100000001000000010011011011001011101
10000000000000000000011011010111000111
10000000000000000000011101100100111111
10000000000000000000010001100010100000
10100011001000110000010101001100100100
10000011001000110010011100011010111111
10000000001000000011011100011001101011
10100000001000000010010100100011101100
10000000000000000000011010010110011001
10000000000000000000011011100100100001
10000000000000000000010000101010100010
10000011000000110010010010010100101100
10100011000000110000010111110010001001
10110000001000000001011110101100111100
10100000001000000010011001000011000011
10000000000000000000011110010000110101
10000000000000000000010000000001101110
10000000000000000000011100101101111110
10000011001000110000010011001011011110
10000011000000110000011011111011001110
10110000001000000000011011011111010101
10100000001000000000011110010011100101
10000000000000000000010010100100011100
11111111111111111111110010101110101000

If you overlay the 1814 and 1414 pictures, and only use the parts where 1814 has a "0", it looks like this:

Note: doing this discards a large amount of bits from the 1414 signal. While there could still be information in those, NA staff confirmed during M5 that this is very probably "random noise" and is unlikely to contain any meaning.

 ■           ■
■■■■■■■■■■■■■■■
 ■           ■

■■■■■■■■■■■■■■■  ■
■             ■ ■■■
■        ■    ■  ■
■       ■■    ■  ■
■      ■■■■■■ ■  ■
■      ■■■■■■ ■  ■
■       ■■    ■  ■
■        ■    ■  ■
■             ■  ■
■ ■       ■   ■  ■
■ ■   ■■  ■   ■  ■
■ ■■  ■■  ■■  ■  ■
■ ■       ■   ■  ■
■             ■ ■■■
■■■■■■■■■■■■■■■  ■

■■■
■■■        ■
■■■  ■  ■     ■  ■  ■  ■  ■
■■■              ■  ■  ■  ■
■■■              ■  ■

     ■■■■■
   ■■■   ■■■
  ■■■■    ■■■
 ■■■■    ■■■■■
 ■■■■    ■■■■■
■■■■          ■
■■ ■      ■■■■■
■■        ■■■■■
■■■■       ■■■■
■■■■■       ■■■
 ■■■        ■■
 ■■■        ■■
  ■■       ■■
   ■■■■■■■■■
     ■■■■■

     ■■■■■
   ■■     ■■
  ■    ■    ■
 ■           ■
 ■     ■     ■
■     ■■■     ■
■    ■■■■■    ■
■     ■■■     ■
■     ■■■     ■
■     ■■■     ■
 ■           ■
 ■           ■
  ■         ■
   ■■     ■■
     ■■■■■

■■■■■■■■■■■■■■■■■■■■■■
■                    ■
■                    ■
■     ■■      ■■  ■  ■
■     ■■  ■   ■■     ■
■ ■       ■          ■
■ ■       ■       ■  ■
■                    ■
■                    ■
■                    ■
■ ■   ■■  ■   ■■     ■
■     ■■  ■   ■■  ■  ■
■         ■       ■■ ■
■ ■       ■       ■  ■
■                    ■
■                    ■
■                    ■
■     ■■      ■■  ■  ■
■ ■   ■■      ■■     ■
■ ■■      ■        ■ ■
■ ■       ■       ■  ■
■                    ■
■                    ■
■                    ■
■     ■■  ■   ■■     ■
■     ■■      ■■     ■
■ ■■      ■          ■
■ ■       ■          ■
■                    ■
■■■■■■■■■■■■■■■■■■■■■■

The 1st part is the box we sent.
The 2nd part is how the Arecibo message indicated "Earth", this time minus pluto. (https://en.wikipedia.org/wiki/Arecibo_message#Planets)
The 3rd part is a picture of a globe?
The 4th part is pointing to a location in that picture?
The 5th part is a box that contains a math test:
1 + 3 = 4
4 + 7 = 11
11 + 1 = 12
9 + 5 =

X2 - response to M2

We composed and sent what is now available as X2.txt. The message looks like:

■■■■■■■■■■■■■■■■■■■■■■
■                    ■
■                    ■
■     ■■      ■■  ■  ■
■     ■■  ■   ■■     ■
■ ■       ■          ■
■ ■       ■       ■  ■
■                    ■
■                    ■
■                    ■
■ ■   ■■  ■   ■■     ■
■     ■■  ■   ■■  ■  ■
■         ■       ■■ ■
■ ■       ■       ■  ■
■                    ■
■                    ■
■                    ■
■     ■■      ■■  ■  ■
■ ■   ■■      ■■     ■
■ ■■      ■        ■ ■
■ ■       ■       ■  ■
■                    ■
■                    ■
■                    ■
■     ■■  ■   ■■  ■  ■
■     ■■      ■■  ■  ■
■ ■■      ■        ■ ■
■ ■       ■       ■  ■
■                    ■
■■■■■■■■■■■■■■■■■■■■■■

     ■■■■■
   ■■■   ■■■
  ■■■■    ■■■
 ■■■■    ■■■■■
 ■■■■    ■■■■■
■■■■          ■
■■ ■      ■■■■■
■■        ■■■■■
■■■■       ■■■■
■■■■■       ■■■
 ■■■        ■■
 ■■■        ■■
  ■■       ■■
   ■■■■■■■■■
     ■■■■■

 ■           ■
■■■■■■■■■■■■■■■
 ■           ■

     ■■■■■        ■
   ■■  ■  ■■     ■■■
  ■    ■■   ■     ■
 ■   ■■■■■   ■    ■
 ■   ■■■■■   ■    ■
■      ■■     ■   ■
■      ■      ■   ■
■  ■       ■  ■   ■
■  ■   ■■  ■  ■   ■
■  ■■  ■■  ■■ ■   ■
 ■ ■       ■ ■    ■
 ■           ■    ■
  ■         ■     ■
   ■■     ■■     ■■■
     ■■■■■        ■

     ■■■■■
   ■■  ■  ■■
  ■    ■■   ■
 ■   ■■■■■   ■
 ■   ■■■■■   ■
■      ■■     ■
■      ■      ■
■  ■■      ■■ ■
■  ■■  ■■  ■■ ■
■  ■■  ■■  ■■ ■
 ■ ■       ■ ■
 ■           ■
  ■         ■
   ■■     ■■
     ■■■■■

The 1st box is the completed math assignment from M2.
The 2nd part is a copy of the globe they sent.
The 3rd part is to say "you sent a circle 15x15.
The 4th part is to say "send 63x63, in the attempt to get back a larger picture of the globe.

M3

NA
We've transmitted your message: https://nihil.agency/signals/X2.wav, https://nihil.agency/signals/X2.txt
And received: https://nihil.agency/signals/M3.wav, https://nihil.agency/signals/M3.txt

There's been a security incident, and we're in the process of moving our employees to a safer location, so may have limited ability to access the signals until we either set up a remote uplink or find another satellite capable of receiving.

Just like in M2, the 1814 Hz signal results in a bunch of zeroes. When overlaid with the 1414 Hz signal, they give this picture:

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                ■             ■              ■        ■       ■
■  ■■ ■ ■ ■    ■ ■    ■ ■ ■  ■ ■ ■  ■ ■ ■   ■ ■ ■■     ■  ■■ ■ ■
■  ■■ ■■   ■■■■  ■ ■  ■■       ■    ■■    ■   ■        ■  ■  ■ ■
■  ■■ ■■  ■■■■■  ■    ■■  ■■■  ■    ■■  ■■ ■  ■ ■      ■       ■
■  ■■ ■■■ ■    ■ ■ ■  ■■■ ■  ■ ■ ■■ ■■■ ■   ■ ■ ■■     ■  ■■ ■ ■
■  ■             ■ ■           ■ ■            ■   ■■ ■ ■   ■   ■
■                ■             ■              ■   ■  ■ ■  ■  ■ ■
■                ■             ■              ■        ■       ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■  ■■ ■ ■
■                                 ■      ■      ■      ■    ■  ■
■ ■■■■■■■■■ ■■■                   ■ ■■ ■ ■ ■■ ■ ■ ■■ ■ ■  ■  ■ ■
■ ■       ■                       ■  ■■  ■  ■   ■  ■   ■       ■
■ ■       ■                       ■ ■  ■ ■ ■  ■ ■ ■  ■ ■  ■■ ■ ■
■ ■      ■                        ■      ■      ■      ■   ■■  ■
■ ■      ■ ■■                     ■ ■■■■ ■ ■■■■ ■ ■■■■ ■  ■  ■ ■
■ ■     ■    ■                    ■ ■■■  ■ ■■■  ■ ■■   ■       ■
■ ■    ■                          ■ ■  ■ ■  ■■  ■  ■   ■  ■■ ■ ■
■ ■  ■■  ■                        ■      ■ ■  ■ ■ ■  ■ ■       ■
■ ■■■     ■                       ■ ■■ ■ ■      ■      ■   ■   ■
■     ■        ■■■■■              ■  ■■  ■ ■■ ■ ■ ■■ ■ ■  ■  ■ ■
■ ■   ■      ■■     ■■            ■ ■  ■ ■  ■   ■  ■   ■       ■
■ ■    ■    ■         ■           ■      ■ ■  ■ ■ ■  ■ ■  ■■ ■ ■
■ ■         ■         ■           ■      ■      ■      ■   ■   ■
■          ■   ■   ■   ■          ■      ■ ■■■■ ■ ■■■■ ■   ■   ■
■          ■  ■ ■ ■ ■  ■          ■■■■■■■■ ■■■  ■ ■■■  ■  ■  ■ ■
■          ■ ■   ■   ■ ■          ■      ■ ■  ■ ■ ■  ■ ■       ■
■          ■  ■ ■ ■ ■  ■          ■ ■■ ■ ■      ■      ■  ■■ ■ ■
■          ■   ■   ■   ■          ■  ■■  ■ ■■ ■ ■ ■■ ■ ■    ■  ■
■           ■         ■           ■ ■  ■ ■   ■  ■ ■  ■ ■   ■   ■
■           ■         ■           ■      ■ ■  ■ ■      ■  ■  ■ ■
■            ■■     ■■            ■ ■■■■ ■      ■      ■       ■
■              ■■■■■              ■ ■■■  ■■■■■■■■■■■■■■■  ■■ ■ ■
■                             ■■■ ■   ■  ■             ■   ■■  ■
■                           ■■■■■ ■ ■  ■ ■ ■ ■   ■  ■  ■   ■   ■
■                          ■■■■■■ ■      ■ ■■    ■■■   ■  ■  ■ ■
■                         ■■■■■■■ ■ ■■ ■ ■ ■■    ■■■   ■       ■
■                        ■■■■■■■■ ■   ■  ■ ■■■   ■■ ■  ■  ■■ ■ ■
■                        ■■■■■■■■ ■ ■  ■ ■             ■       ■
■                       ■■■■■■■■■ ■      ■ ■  ■  ■  ■  ■    ■  ■
■                       ■■■■■■■■■ ■ ■■■■ ■ ■     ■■■   ■  ■  ■ ■
■                       ■■■■■■■■■ ■ ■■■  ■ ■■■   ■■    ■       ■
■                                 ■ ■  ■ ■ ■■ ■  ■■ ■  ■  ■■ ■ ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■      ■             ■   ■   ■
■                                 ■ ■■ ■ ■ ■  ■  ■  ■  ■    ■  ■
■  ■■ ■ ■■ ■ ■■ ■ ■■ ■ ■■ ■ ■■ ■  ■   ■  ■ ■ ■   ■ ■   ■  ■  ■ ■
■   ■■    ■   ■   ■  ■  ■     ■   ■  ■   ■ ■■    ■■■   ■       ■
■  ■■ ■ ■■ ■ ■■ ■      ■  ■ ■  ■  ■ ■  ■ ■ ■■ ■  ■■ ■  ■       ■
■                                 ■      ■             ■       ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                    ■                    ■                    ■
■ ■  ■ ■  ■ ■  ■ ■ ■ ■ ■  ■ ■  ■ ■  ■ ■ ■ ■ ■  ■ ■  ■ ■  ■ ■ ■ ■
■      ■■■   ■   ■■  ■  ■   ■■■    ■  ■■  ■  ■■  ■     ■   ■■  ■
■ ■■■  ■■■  ■■   ■■  ■ ■ ■  ■■   ■    ■■  ■ ■■■  ■■■  ■■   ■■  ■
■ ■  ■ ■■ ■ ■  ■ ■■■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■
■                    ■                    ■                    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                    ■                    ■                    ■
■ ■  ■ ■  ■ ■  ■ ■ ■ ■ ■  ■ ■  ■ ■  ■ ■ ■ ■ ■  ■ ■  ■ ■  ■ ■ ■ ■
■  ■   ■■■    ■  ■■  ■  ■   ■■■   ■   ■■  ■   ■  ■     ■   ■■  ■
■ ■■   ■■■  ■ ■  ■■  ■ ■    ■■   ■    ■■  ■ ■    ■■■  ■■   ■■  ■
■ ■  ■ ■■ ■ ■  ■ ■■■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■
■                    ■                    ■                    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

This image contains a different notation for numbers, as well as some mathematical operators and some homework assignments.

M3.png

This number notation is also based on binary, just laid out differently:

■■  ■ ■  ■ ■  ■ ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■   ■  ■   ■  ■   ■ 
          ■    ■                ■     ■      ■     ■    ■■    ■■     ■     ■    ■■    ■■                  ■    
■   ■■   ■    ■■   ■ ■   ■■■   ■ ■   ■■■   ■     ■■    ■     ■■    ■ ■   ■■■   ■ ■   ■■■   ■  ■   ■■ ■   ■  ■  
■■  ■ ■  ■ ■  ■ ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■   ■  ■   ■  ■   ■ 
0   1    2    3    4     5     6     7     8     9     10    11    12    13    14    15    16     17     18      ...

Numbers are made negative by changing a single bit:

    ■ ■  ■ ■  ■ ■
          ■    ■ 
    ■■■  ■ ■  ■■■
    ■ ■  ■ ■  ■ ■
    -1   -2   -3  ...

And there are mathematical operators:

    ■ ■  ■  ■  ■  ■  ■  ■  ■  ■  ■  ■
    ■■   ■■■   ■     ■■■   ■ ■   ■ ■ 
    ■■   ■■■   ■■■   ■■    ■■    ■■■ 
    ■■■  ■■ ■  ■■ ■  ■■ ■  ■■ ■  ■■ ■
    =    +     -     *

X3 - response to M3

We composed and sent what is now available as X3.txt. The message looks like:

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■                          ■
■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■  ■ ■  ■ ■  ■ ■ ■ ■   ■ ■
■      ■■■   ■   ■■    ■  ■  ■   ■■■    ■  ■■     ■  ■
■ ■■■  ■■■  ■■   ■■  ■    ■ ■ ■  ■■   ■    ■■  ■  ■  ■
■ ■  ■ ■■ ■ ■  ■ ■■■ ■  ■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■   ■ ■
■                         ■                          ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■                          ■
■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■  ■
■  ■■  ■     ■   ■■    ■  ■  ■   ■■■    ■  ■■   ■■   ■
■ ■■■  ■■■  ■■   ■■  ■ ■  ■ ■■   ■■■  ■ ■  ■■  ■■■   ■
■ ■  ■ ■■ ■ ■  ■ ■■■ ■  ■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■  ■  ■
■                         ■                          ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■                          ■
■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■  ■
■  ■   ■■■   ■   ■■       ■   ■  ■     ■   ■■        ■
■ ■    ■■   ■    ■■  ■ ■  ■ ■    ■■■  ■■   ■■  ■■■   ■
■ ■  ■ ■■ ■ ■  ■ ■■■ ■  ■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■  ■  ■
■                         ■                          ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                                                    ■
■ ■    ■ ■  ■ ■     ■ ■  ■ ■     ■ ■ ■ ■        ■    ■
■  ■■■   ■■■    ■ ■   ■■■       ■  ■■    ■■ ■■ ■     ■
■ ■■ ■■■ ■■   ■   ■■  ■■■  ■■■■ ■■ ■■  ■■■   ■■■■    ■
■ ■    ■ ■■ ■ ■     ■ ■■ ■ ■     ■ ■■■ ■        ■    ■
■                                                    ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                         ■                          ■
■ ■  ■ ■  ■ ■ ■ ■ ■       ■ ■  ■ ■  ■ ■ ■ ■ ■        ■
■      ■ ■   ■  ■■        ■      ■ ■   ■  ■■         ■
■ ■ ■  ■■   ■   ■■        ■ ■ ■  ■■■  ■   ■■         ■
■ ■  ■ ■■ ■ ■ ■ ■■■       ■ ■  ■ ■■ ■ ■ ■ ■■■        ■
■                         ■                          ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
X3.png

The first 3 rows are the questions from M3 with their answers.
The 4th row is us showing off our math skills.
The 5th row is us asking about the two remaining unused operators.

M4

NA
Apologies for the delay, we've been moving to a different location and due to the recent Syzygy, resources have been limited.

We've updated our signal analysis framework a bit to take advantage of the higher resolution receivers here.

We've transmitted your message: https://nihil.agency/signals/X3.wav, https://nihil.agency/signals/X3.txt
And received: https://nihil.agency/signals/M4.wav, https://nihil.agency/signals/M4.txt

We're still running at limited capacity due to the holidays and the migration of other NA resources here, but will continue to monitor.

Just like in M2 and M3, the 1814 Hz signal results in a bunch of zeroes. When overlaid with the 1414 Hz signal, they give this picture:

■■■■■■■■■■■■■■■■■■■■■■■■■
■                       ■
■ ■  ■ ■  ■ ■ ■ ■ ■ ■ ■ ■
■      ■ ■   ■  ■■   ■  ■
■ ■ ■  ■■   ■   ■■  ■   ■
■ ■  ■ ■■ ■ ■ ■ ■■■ ■ ■ ■
■                       ■
■ ■  ■ ■  ■ ■ ■ ■ ■ ■■  ■
■      ■ ■   ■  ■■      ■
■ ■ ■  ■■■  ■   ■■  ■   ■
■ ■  ■ ■■ ■ ■ ■ ■■■ ■■  ■
■                       ■
■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                                                  ■
■ ■ ■ ■  ■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■■ ■
■     ■■■   ■  ■■■   ■  ■         ■ ■       ■■  ■  ■
■ ■■  ■■   ■   ■■■  ■■  ■■■  ■ ■  ■■■  ■■■  ■■  ■  ■
■ ■ ■ ■■ ■ ■ ■ ■■ ■ ■ ■ ■■ ■ ■  ■ ■■ ■ ■  ■ ■■■ ■■ ■
■                                                  ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                                                                                                                                   ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■  ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■  ■
■ ■■   ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■ ■  ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■                                                                                                                                   ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■  ■    ■    ■    ■     ■    ■    ■    ■        ■    ■    ■    ■     ■    ■        ■    ■     ■    ■        ■    ■    ■    ■■    ■  ■
■ ■■   ■    ■    ■■■  ■■   ■    ■■   ■ ■  ■■■  ■    ■ ■  ■    ■■   ■    ■    ■    ■    ■■   ■■   ■    ■    ■    ■■■  ■    ■■   ■ ■  ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■                                                                                                                                   ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■  ■    ■■        ■■         ■         ■   ■■        ■■        ■■   ■     ■    ■        ■■   ■     ■   ■■        ■■        ■     ■  ■
■ ■■   ■■   ■■   ■■■  ■ ■  ■ ■  ■ ■  ■ ■  ■■   ■■   ■■   ■■   ■■■  ■ ■  ■ ■  ■    ■■   ■■■  ■ ■  ■ ■  ■    ■■   ■■■  ■■   ■■■  ■ ■  ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■                                                                                                                                   ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■  ■                                                                                                                             ■  ■
■ ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■                                                                                                                                   ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                                                                                                                                   ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■  ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■   ■■  ■
■ ■■   ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■    ■ ■  ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■                                                                                                                                   ■
■ ■ ■ ■ ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■ ■ ■ ■  ■ ■  ■ ■■ ■ ■ ■ ■ ■  ■ ■  ■ ■■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■               ■
■  ■   ■   ■   ■     ■    ■    ■    ■        ■   ■    ■   ■    ■    ■      ■   ■    ■    ■      ■   ■    ■   ■■    ■                ■
■ ■■  ■   ■   ■■■  ■■   ■    ■■   ■ ■  ■■■  ■   ■ ■  ■   ■■  ■    ■    ■  ■   ■■  ■■   ■    ■  ■   ■■■  ■   ■■   ■ ■                ■
■ ■ ■ ■ ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■ ■ ■ ■  ■ ■  ■ ■■ ■ ■ ■ ■ ■  ■ ■  ■ ■■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■               ■
■                                                                                                                                   ■
■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■        ■
■  ■   ■■       ■■         ■         ■   ■■       ■■       ■■   ■     ■    ■       ■■   ■     ■   ■■       ■■       ■     ■         ■
■ ■■  ■■   ■■  ■■■  ■ ■  ■ ■  ■ ■  ■ ■  ■■   ■■  ■■   ■■  ■■■  ■ ■  ■ ■  ■    ■■  ■■■  ■ ■  ■ ■  ■    ■■  ■■■  ■■  ■■■  ■ ■         ■
■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■        ■
■                                                                                                                                   ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■  ■                                                                                                                             ■  ■
■ ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■■■  ■
■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■
■                                                                                                                                   ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
■                                                  ■
■ ■ ■ ■ ■ ■  ■ ■ ■ ■  ■ ■  ■ ■  ■ ■  ■ ■  ■ ■ ■ ■■ ■
■      ■  ■■■   ■  ■■■            ■ ■  ■    ■■  ■  ■
■ ■■  ■   ■■   ■■  ■■■  ■ ■  ■■■  ■■■  ■■■  ■■  ■  ■
■ ■ ■ ■ ■ ■■ ■ ■ ■ ■■ ■ ■  ■ ■  ■ ■■ ■ ■■ ■ ■■■ ■■ ■
■                                                  ■
■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■

The 1st box is the answers to the math problems we sent in X3, helping us identify those operators (division and modulus).
The 2nd box is a new math problem using the new operators and a new symbol at the end that we're calling "?" for now.
The 3rd box is a "nested" version of the 2nd box, with the same contents. (see below)
The 4th box is the same as the 3rd box, but showing that numbers can contain padding (to make them line up, as in box 3) or not (as in box 4). Compare the characters in the first column. Padding acts like the extra zeroes in "005" — it doesn't change the number but can help with layout.
The 5th box is the same as the 2nd box but in Reverse Polish Notation which explains the operator precedence.

As an image:
M4.png

Explaining the "nesting" happening in box 3:
M4_nesting.png

Relevant symbols (note that the "?" symbol doesn't fit the format of the numbers nor of the operators, making it different from all other symbols we've seen so far):

■  ■  ■  ■  ■■
■ ■   ■ ■   ■ 
■■    ■■■   ■ 
■■ ■  ■■ ■  ■■
/     %     ?

X4 - response to M4

We composed and sent what is now available as X4.txt. The message looks like:

X4.png

The 1st box is the answer to the math problem in M4 ( 1*2+3-4%5 = ((1*2)+3)-(4%5) = (2+3)-4 = 5-4 = 1 )
The 2nd box is just for fun.

Interlude

During December 2020 and January 2021, people at Nihil Agency went on break and/or had to go underground for other reasons. We submitted the X4 signal, but it never appeared on the website, indicating that it was not immediately transmitted. We also got no replies to our emails.

During February 1st and 2nd, a hacker with the group Agmen of Nerds who called themselves Spire took over NA's old offices. They made available our X4 message, as well as M5.wav but withheld M5.txt. They basically tried to bribe us into helping them understand the transmission methods. We did not help them, nor needed their help, thankyouverymuch.

In the evening of February 2nd, we regained contact with NA.

NA

I'm still sorting out the state of the Agency given the recent shifts, but if you have anything you need transmitted or further understanding of the signals, let me know.

-Spencer

So we're back in signal-sending business, with Spencer having taken over communications from Livingston.

M5

The received M5 signal (1414/1814Hz wav, txt) is extremely large. The wav is almost an hour long. Converted to an image it looks like this:

M5.png

This image is filled with simple math problems using the numbers and operators we have learned so far:

M5_solving.png

After extracting the math problems (which we automated) and solving all the problems (which we automated), we are left with a block of numbers:

12 10 10 10
00 06 00 00
00 00 06 00
00 00 00 06 ...
...

When these are shown as symbols (another step we automated):

M5_solves.png

And then these symbols are turned into lines like was done with M4 (more automation), we get this drawing:

M5_solves_squished.png

We recognize this symbol as being used by The Tower on their Youtube channel, as well as by Erol Klarson in Discord chats.

Additionally, if instead of solving the math problems we only consider the left-hand-side numbers and ignore everything else, we get a different block of numbers. Using the same process, those lead to this drawing:

M5_lefts_squished.png

This symbol contains the logos for Alexander Clark and Oakley Smith, an arrow, and a question mark.

Note: while working on this signal, we also had the following exchange with Spencer:

us
Regarding hidden data, there is some data in recent transmissions that we haven't done anything with. Ever since M2 when the signal became dual-frequency there has been part of the data that got discarded after applying the bitmask from 1814Hz to the signal from 1414Hz. I can't figure out if it means something or if it can be ignored as random noise. I asked Livingston whether they had any insight but never got a response. Perhaps you have any ideas?
NA
I believe that Livingston thought it was random noise, and sampling it over time, the distribution matched that of a coin flip, so it's unlikely to contain anything of note.

X5

We had shown Spencer the first image obtained from M5, but not yet the second image. While we were working on obtaining the second image, Spencer emailed:

NA
While I was trying to sort out an automated method for turning images into signals, I accidentally transmitted the sample image you sent. There was a new response back as well.

So where before, NA required us to send zeroes and ones to be transmitted, now Spencer will accept an image instead. This will take some work off our plate going forward, which is nice.

So Spencer sent X5 (1414/1814Hz wav, txt), which contains the first image we obtained from M5.

M6

In response we received M6 (wav, txt):

M6.png

This message tells us about how M5 has two meanings, one from the math-solutions and one from the left-hand-side numbers.
It uses the number zero, which can also be read as a "blank" number, to mean "any number". Similarly it uses a "blank" operator to mean "any operator".

■  ■
■   
■   
■■ ■
"an operator"

But we didn't need this hint. We just needed a little time extracting that second image and building our response.

Note: while the discarded "random noise" from M2-M5 was always different, this time in M6 it exactly matches that of M5.

X6 - response to M5

As a response to M5 we sent X6 (wav, txt):

It follows the same format as M5, containing a large number of simple math formulas. With the solutions turned into lines it contains this image:

X6_solves_squished.png

This is the logo for Taskforce Earth. Additionally, with the left-hand-side numbers turned into lines it contains this image:

X6_lefts_squished.png

These are our attempts at drawing the Alexander Clark and Oakley Smith logos, implying that Taskforce Earth is made up of Alex and Oakley. Don't judge the artwork, this took some effort.

M7

M7 came (wav, txt):

M7.png

This contains new operators that we're interpreting as:

■  ■  ■  ■
■■■   ■ ■ 
■ ■   ■ ■ 
■■ ■  ■■ ■
AND   OR

This uses symbols that we've seen before in the Tower Layout. Our guesses at interpreting this:
Left box 1: either an eye or the symbol for Sun, either the Tower or Erol, and a question mark.
Left box 2: The Witness or up-side-down Witness ?
Left box 3: Alexander Clark minus Death ?
Left box 4: Paula Lewis send
Right box 1: Alex and Oakley equals Taskforce Earth ?
Right box 2: Light or Death for this symbol which may be the Ark ?
Right box 3: Knowledge, something ? (The something-symbol was tweeted earlier by Tim Malor, but we have no meaning for it.)

Note: the discarded "random noise" from M7 matches that of M5-M6.

X7 - response to M7

Even though there is a lot of stuff we don't understand about M7, we replied with X7 (wav, txt):

X7.png

We tried to communicate:
Top box: Oakley, Alex, Paula, and The Progenitors (that's us) make up Taskforce Earth.
Left box 1: Alex Knowledge Chaos Death ? (Alex is missing presumed dead), same for Oakley and Paula. Elliot is just missing. The Tower / Erol is a big fat question mark.
Left box 2: Witness Schemes, Eater Death Schemes, The Seekers Of True Enlightenment (SOTE) Schemes
Right box 1: Taskforce Earth is up-side-down Witness (TE is the opposite of the Witness). Taskforce Earth is Witness times minus one (again, TE is the opposite of the Witness).
Right box 2: We don't know what these three symbols mean.
Right box 3: Progenitors (that's us) are sending this. Is Paula receiving this?

M8

M8 is a short message (wav, txt):

M8.png

Up-side-down Witness Equals Death

This left us confused. Since we said before that we're the up-side-down Witness, does that mean we're dead? Did we misinterpret M7?

Note: the discarded "random noise" from M8 is different from that of M5-M7.

X8 - response to M8

So we summed up our understanding (wav, txt):

X8.png

M9

M9 is somewhat understandable (wav, txt):

M9.png

On the left we see Paula on the other side sending the signal through NA on their side, through their side of The Shatter, our Shatter, a question mark, to us.
On the right are a depiction of EB's Journal, a question mark, and something Spire told us "appears to be a poorly drawn depiction of a Morphic Resonance Sensor, developed by Cal Devali.".

We're interpreting this as helpful confirmation of the signal path, a question to confirm whether we use NA as well, and whether we know about, or are in possession of, EB's Journal and/or a Morphic Resonance Sensor.

On the journal there are letters spelling "journal" on top and "elliotb" on the bottom using this font:

pixel_alphabet.png

Note: the discarded "random noise" from M9 is the same as that from that of M5-M7.

X9 - response to M9

Our response (wav, txt):

X9.png

On the left we're confirming that on our side the signal goes through NA as well.
On the right we're saying we have the journal, and we don't know who has a Morphic Resonance Sensor.

M10

M10 (wav, txt):

M10.png

On the left is a diameter, a circumference, the question "circumference / diameter = ?", and a picture of a sine wave, signal, or DNA.

There is a new symbol format that neither matches the known format for numbers nor the one for operators.
The new format is used twice, once similar to a "1" to mark the diameter and once like a "2" to mark the circumference. They could mean "a" and "b" respectively.

■ ■  ■ ■  ■ ■
■    ■    ■■ 
      ■      
■ ■  ■ ■  ■ ■
     a?   b?

On the right is a bunch of pixels that, if broken into 3x3 pieces and matched with the font from M9, spell a message in the odd lines:

M10_message.png

Are you there? Did you make it to the other side of the shatter? The resonances on this side are almost all gone.

The theory for now is that other-side-Elliot used a resonance/Morphic event to send himself to our side, and that he will need to use another resonance/Morphic event to get back.

The even lines are a combination of the top of the next line, the bottom of the previous line, and a black line. Perhaps this is done as a checksum, or simply to help us recognize the message is not just random data.

M10_even_lines.png

Note: the discarded "random noise" from M10 is the same as that from that of M5-M7,M9, and it continues being the same going forward.

X10 - response to M10

Our response (wav, txt):

X10.png

On the left we explain that the diameter of a circle divided by its circumference is PI.
We repeat the wave image with a question mark because we don't know what it is.
On the right we include a message just like in M10.

X10_message.png

We have not found EB. Got journal in Morphic. Trying to solve his black box. How can we help? 2021 Feb 23.

We are referencing how Elliot is currently missing, the Boston Drop where we obtained the Journal, Project Bifurcus Black Box that we're currently working on, and the current date because the other side of the Shatter may be in the past or future.

M11

M11 (wav, txt):

M11.png

The first line is a message in the alphabet from M10.

what happened to

The rest is a message in a slightly different alphabet. It's easier to read when you separate the letters a bit:

M11_exploded.png
what happened to
 pl on your side
 of the shatter?
 has the sun arr
ived in your rea
lity? cycles are
 unraveling fast
er and faster in
 each reality. e
lliot's journal 
holds the key. t
he key lies in s
trands lengthene
d. we're not sur
e what it means,
 but hopefully t
here's something
 in the journal 
that matches tha
t? please help.

The alphabet used is as follows. It is missing the letters Q, X, and Z, because they were not in the message. Instead it includes a question mark, comma, period, and apostrophe.

M11_alphabet.png

X11 - response to M11

X11 (wav, txt):

X11.png

The middle box contains the page from EB's Journal that we think is about lengthening strands.
The left box contains the page from the journal that we believe fits there. We don't know what it depicts, but we hope the recipient will.
The right box contains the following message using the alphabet from M11:

PL was MIA, hunt
ed by magus, tro
uble communicati
ng. Our sun seem
s fine. We spoke
with ☉ The eat
er is coming. EB
's journal conta
ins these pages.
Do they help?

"The sun" refers to multiple things: our sun (which is harmless, right?), the Sun that goes with the Eater that will come through space to destroy us all, and ☉ who we chatted with in Discord. We're not sure what Paula was referring to in M11 but we hope we answered the question.

M12

M12 (wav, txt):

M12.png

This is a message in the alphabet from M11.

M12_exploded.png
letters?are?the?
important?bit.?e
very?other?codei
?have?seen?had?n
o?numbers.?enoug
h?history?of?pas
t?keys?shows?oft
en?that?there?co
uld?be?a?referen
ce?to?some?key?d
eep?inside.?data
?could?be?hidden
?in?some?table?g
iven.?maybe?some
thing?sciency?pr
esents?numbers.

Note that the question marks in the message really are question marks and not spaces like in previous messages.
Note that the message says "codei?have" and not "code?i?have".

While working on this, Spencer sent an email:

Spencer
There's something strange going on. I came across some evidence that someone messed with the latest signal, running a program called "rmandreflow.py" on it, unfortunately the script and original signal have been deleted.
us
When I look at https://nihil.agency/signals/M12.txt it looks the same as what I downloaded yesterday. Are you saying the content of this signal changed?
Spencer
Yes, the one on the site is the modified signal. Not sure why anyone would try to mess with the signal, unless they were trying to hide something.
us
Alright, thank you for letting me know. I did notice a suspicious flow-related issue, so I'll keep in mind that it might be intentional by someone trying to interfere.
Spencer
Unfortunately while security at the Agency is tighter than before, the signals themselves are accessible to anyone here, so it would be nearly impossible to track down who did the modification.
us
It could also be that the person who initially transcribed the signal made a little mistake and is simply trying to cover their butt. I guess we will never know…
Spencer
It seems quite intentional, almost as if they removed something to obscure/hide something they didn't want discovered. Wish the original signal was available to see what the original layout was supposed to be.

If we put back the missing question mark in "codei", the first letter of each line spells a message.

letters?are?the?
important?bit.?e
very?other?code?
i?have?seen?had?
no?numbers.?enou
gh?history?of?pa
st?keys?shows?of
ten?that?there?c
ould?be?a?refere
nce?to?some?key?
deep?inside.?dat
a?could?be?hidde
n?in?some?table?
given.?maybe?som
ething?sciency?p
resents?numbers.

LIVINGSTONDANGER

Presumably meaning that Livingston can't be trusted.

Additionally we tried to find meaning behind all of the question marks, but failed.

M12_grille.png

X12 - response to M12

X12 (wav, txt):

X12.png

This contains the following message using the alphabet from M11:

sorryyoumustcont
inuelivinginfear
butwehavenotable
nolettersnokeyno
sciency.
triedtotraversea
ndexplorethelimi
tsofcenter.datab
utfoundnothing.
somanyquestionsa
ndnoanswers.

We're trying to get across that:

  • We understood the LIVINGSTON DANGER message.
  • We don't know how to solve the "strands" problem.
  • We have stuff from other puzzles that may be helpful for you to know about:
      • the code "TRAVERSE" obtained via a March 7th deaddrop, still unused.
      • the code "EXPLORE THE LIMITS" on the side of EB's Journal, used to open a box but still may be relevant.
      • the CENTER.dat file that came with EB's Journal, still unused.
  • If there was a hidden message behind all the question marks in M12, we didn't get it.

Also we had to make up what the letters "X" and "Q" should look like in this alphabet. If we got it wrong, the message should still be readable.

M13

M13 (wav, txt):

M13.png

This appears to contain a message using the numbers from M3 and the letters from M11:

1H 2HE

This is a reference to chemical elements (#1, H, Hydrogen; #2, He, Helium; …). The "sciency table" that was referenced in M12 is the periodic table of elements, and the numbers from X11 and from EB's Journal spell a word:

53  7  9 49 53 52
 I  N  F In  I Te

X13 - response to M13

X13 (wav, txt):

X13.png

The numbers do a
ppear periodic i
n nature. can't
give details due
to recent securi
ty breach. not s
ure what is safe
to say anymore.

We are hopefully giving them enough information to turn the numbers into letters, without actually giving them the answer. We're doing this because yesterday (March 17th 2021) Spire got into Aeternus and took out magus, and also because of the warning about Livingston. We're being cautious about the information we send without having to make up a brand new puzzle of our own. And we're implying that we need more information about how paranoid we need to be.

M14

M14 (wav, txt):

M14.png

Easier to read:

M14_exploded.png

When read using the alphabet from M11:

i appreciate the
iv  hh ygbney se
 help you have p
ioliittdrweti go
rovided. is ther
wato dhmnssiig w
e anything you l
otr rlacibyso, l
ost in your real
asetteea eecn nt
ity i can help o
glt anee firhnt 
ut with from her
 ivhit iegs nn y
e as thanks? ,pl
iuh pealeto ?rph

On the odd lines this contains a message:

i appreciate the help you have provided. is there anything you lost in your reality i can help out with from here as thanks? ,pl

These are the even lines left over:

1: iv  hh ygbney se
2: ioliittdrweti go
3: wato dhmnssiig w
4: otr rlacibyso, l
5: asetteea eecn nt
6: glt anee firhnt 
7:  ivhit iegs nn y
8: iuh pealeto ?rph

If you reorder these like so:

1: iv  hh ygbney se
5: asetteea eecn nt
2: ioliittdrweti go
6: glt anee firhnt 
3: wato dhmnssiig w
7:  ivhit iegs nn y
4: otr rlacibyso, l
8: iuh pealeto ?rph

And then read letters alternating between the lines:

1: i_ _h_ _g_n_y_s_
5: _s_t_e_a_e_c_ _t

You get another message:

1,5: is the agency st
2,6: ill interfering 
3,7: with things in y
4,8: our reality or h
5,1: ave they been ne
6,2: gotiated with to
7,3: avoid messing w 
8,4: ith placebos?,pl

X14 - response to M14

X14 (wav, txt):

X14.png

This contains two messages encoded just like M14.
Readable message on the odd lines:

Hello Paula how are things on your side going? We search for items and knowledge but nothing is ever truly lost. Can you share some knowledge with us? Where in time are you? How is your Taskforce Earth doing? Can you fill in the blanks? THEVOYAGESHATTEREDVESSELANDALTERSHISTORYSOALCHEMYHADNOPROGENITOR

Scrambled message on the even lines:

Livingston or someone else at our NA is reading and interfering with these messages but seems to leave PLACEBOS alone. We did not negotiate anything. Can we trust Spencer Klars at NA? Are you doing anything to prepare for the Eater? THERE?A??I?G?E?HAD????O?EN??T????ET?E????????????E???E???I????UP

Besides the obvious questions, we're asking Paula for help with memory fragment 7.

M15

M15 (wav, txt):

M15.png

When this image is rotated 180 degrees it contains a message in the alphabet from M11:

in early twenty twenty one. ther
e is no taskforce here. we are m
ostly working alone. perhaps we 
can try things here that you hav
e failed at? i have not seen tho
se phrases before but i can look
 around for it. where did you fi
nd it perhaps someone on this si
de can investigate. it is good t
hat they are leaving placebos al
one, they think they know everyt
hing and are interfering in thin
gs and making life more difficul
t on our side. i am not too awar
e of the members of nihil in thi
s reality other than livingston.

X15 - response to M15

X15 (wav, txt):

X15.png

This contains a message encoded just like M15.

We are the Progenitors, a group 
made of AC recruits and others w
ho teamed up with AC and OS unde
r the name Taskforce Earth to de
al with the Eater. Our PL exists
 as one or more AEs and human PL
 is missing. EB was missing but 
may have just been found. We are
 looking for the Tower and other
 Ark tech and any historic infor
mation to help us understand. Th
e Seekers are interfering to get
 Ark tech for their own goals. A
 and O are gone so we're basical
ly on our own as well. The sente
nces are memory fragments on web
site forgethereal.one and seem t
o hold shatter history. Hoped yo
u'd know more.Seekers attacked A
 and O, and one named Cal Devali
 took over AC with AE named Spir
e and released the AEs. Seekers 
are the worst.NA seems ok. R and
 L come and go. Parley has Data 
Link errors. We are busy people.

M16

M16 (wav, txt):

M16.png

When the colors in this image are inverted it contains a message in the alphabet from M11:

i've been able to work with some
 detectives on this side to deco
de the first couple fragments on
 that site, but they are having 
trouble beyond that. doing some 
investigation, it appears like c
al was involved in something tha
t wiped out the seekers in this 
reality and then disappeared a f
ew weeks ago. the last traces of
 cal were at paeo gwovottnponemw
ststenmoiwpwtnaoxolowipnsfudonle
eososeudvuttecsoer. this particu
lar reality seems calmer than yo
urs, though perhaps there just a
ren't the resources to detect th
e oncoming threat. unfortunately
 with the agency tightening up t
hings, it's hard to find out muc
h of anything. i've been trying 
to track down one of the agency 
bases to see if it can be invest
igated to try getting a better p
icture of what's going on here.h

The string of letters in the middle can be wrapped like this:

gwovottn
ponemwst
stenmoiw
pwtnaoxo
lowipnsf
udonleeo
soseudvu
ttecsoer

And if read top to bottom, left to right, it spells:

gps plus two two dot one two seven nine comma plus two one dot six seven two four

Giving us:

PAEO GPS +22.1279, +21.6724

X16 - response to M16

X16 (wav, txt):

X16.png

This contains a message encoded just like M16.

We solved fragments one through 
ten except for nine. If you know
 nine please share, and let us k
now if you want any from us. Wha
t deal did you make with the age
ncy? They asked us to examine an
d forward objects and we plan to
 do so carefully. NA may have a 
base in the UTC minus two timezo
ne but otherwise we don't know t
heir location. Do you know if th
ey have space travel capability?
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