3 ms·
The Arecibo Message is 48 light years from Earth, moving one light-year per year. https://en.wikipedia.org/wiki/Arecibo_message https://en.wikipedia.org/wiki/A
by ISL 4y ago
The Arecibo Message is 48 light years from Earth, moving one light-year per year.
https://en.wikipedia.org/wiki/Arecibo_message https://en.wikipedia.org/wiki/Arecibo_message