(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be ...

Comet 41P/Tuttle-Giacobini-Kresak has begun acting a little unusually, but there are likely natural explanations before we go ...

As Trump orders UFO file release, scientists debate a deeper question—if aliens exist, what would they think of humanity?

Scientists have uncovered a surprising way to study the harsh space weather around young M dwarf stars. Mysterious dips in ...

A video, now viral on the social media, shows a bright object slowly falling from the sky over Indonesia, triggering claims ...

A strange purple object aboard the ISS sparked alien fears online, but NASA revealed it was a potato experiment. It shows how ...

Nine out of 10 experts in space biology agree aliens exist in the Universe. Two-thirds think ET will be highly intelligent. A survey of 521 astrobiologists and 534 scientists and physicists found 87% ...

This study ranks Florida among the top states for alien abduction reports, where you have 1 in 1,102 odds of an ...

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

These movies are the pinnacle of 70s sci-fi and the hard science fiction subgenre - priortizing scientific accuracy over ...