"As far as I know, there are no protocols for responding to the discovery of functioning alien devices near Earth." The post Astronomer Estimates 30-40 Percent Chance Mysterious Interstellar Object Is ...

The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we might have a chance at detecting their ...

What if our first 'first contact' isn't a friendly greeting, but a silent, massive object hurtling past our planet disguised as a comet? This is the provocative question being posed by one of the ...