Tags: aliens

The aliens are silent because they’re dead

Life on other planets would likely be brief and become extinct very quickly, say astrobiologists from The Australian National University (ANU). In research aiming to understand how life might develop,...

Why haven’t we found any aliens yet?

Many years ago, Carl Sagan predicted there could be as many as 10,000 advanced extraterrestrial civilizations in our galaxy. After nearly 60 years of searching without success, a growing list...