The Arecibo Message
The message sent in 1974 from the Arecibo radio telescope toward the globular cluster M13 consisted of 1679 “bits” of information. Sent in binary, a “0” is represented by an “off” radio pulse, while a “1” is represented by an “on” radio pulse.
This picture was generated by arranging the 1679 bits above into 23 columns of 73 rows, 23 and 73 being the two prime numbers, which when multiplied together equal 1679. A box representing a “one” has been colored black, while a box representing “zero” has been colored white. Unfortunately, the image is “parity reversed, ” i.e., it was generated by scanning right to left, i.e., the first bit in the message occupies the upper row, rightmost cell. The next bit is the in the top row, next cell proceeding to the left. Many books have printed the picture this way. Maybe they think aliens are likely to be left-handed or maybe it is meant to tell them that all the amino acids that make up proteins in life on Earth are “left-handed” except for those that have no handedness. You should be able to see, though, that the "handedness" of the image is completely irrelevant.
Here, I’ve redrawn the first figure according to normal convention by filling the cells left to right. In other words, the first bit occupies the left-most, upper row cell, and so on. Also, I’ve colored the 1’s and left the 0’s black.
Atomic numbers for H, C, N, O, P
Formulas for sugars, bases and phosphate in DNA nucleotides
Double helix structure of DNA surrounding binary number that represents the number of nucleotides in the human genome.
Height of human being marked on the left and human population marked on right
Schematic of solar system (human stands on 3rd planet)
transmitting telescope Arecibo
Diameter of telescope