Professor Avi Loeb of Harvard cited three reasons 3I/ATLAS might be an alien spacecraft. First, its trajectory is highly unusual. The object passed through space relatively close to multiple planets ...

NASA has compiled a list of seven science-fiction movies it deems the most scientifically accurate in portraying space, alien ...

These are missions only NASA can lead. Everything else should go to partners who can deliver faster and cheaper.

Language and radio signals may not matter to aliens. Instead, they might be using patterns to leave a biological fingerprint.

There is currently no proof that the universe is home to other intelligent life forms aside from the ones that inhabit Earth, and evidence to the contrary ...

Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...