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Why don't Aliens communicate with us?

Arecibo message

The Arecibo message is a 1974 interstellar radio message carrying basic information about humanity and Earth sent to globular star cluster M13 in the hope that extraterrestrial intelligence might receive and decipher it.  The message consisted of 1,679 binary digits, approximately 210 bytes, transmitted at a frequency of 2,380 MHz and modulated by shifting the frequency by 10 Hz, with a power of 450 kW. The "ones" and "zeros" were transmitted by frequency shifting at the rate of 10 bits per second. The total broadcast was less than three minutes.

https://en.wikipedia.org/wiki/Arecibo_message

https://www.nbcnews.com/mach/science/we-just-beamed-signal-space-aliens-was-bad-idea-ncna822446

Aliens and Earth (2018)

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