Humans have gotten good at spotting planets orbiting alien stars. But how many of those alien stars are able to look back and see us?
Source: https://www.livescience.com/aliens-spot-earth-exoplanets.html
Only the Autodidact is Free
Humans have gotten good at spotting planets orbiting alien stars. But how many of those alien stars are able to look back and see us?
Source: https://www.livescience.com/aliens-spot-earth-exoplanets.html