If an extraterrestrial civilization existed with technology comparable to ours, would they be able to detect Earth?

The Drake Equation, say the researchers, assumes that an intelligent civilization would logically evolve on all life-bearing planets. This research suggests something else. Earth is the only ...

seeking to answer the question could also help us search for signs of advanced civilizations on exoplanets. As the paper points out, humans have left notable marks on the planet that will ...

The Milky Way could be teeming with interstellar alien civilizations ... and even more planets. One recent study estimated that up to 10 billion of those planets could be Earth-like.

Fermi was a Nobel Prize winning physicist famous for quickly estimating answers to questions, like how many heart beats are ...