Scientists disagree about what life on other planets even means. Would we know it when we saw it?

The long lobbying campaign of a handful of UFO obsessives and crank pseudoscientists is finally paying off.

A collection of well-funded UFO obsessives are using their Capitol Hill connections to launder some outré, and potentially dangerous, ideas.

The original movie, as well as its elaborate marketing campaign, were steeped in mystery. What happened?

This efficient, "Alien"-indebted sci-fi thriller makes the most out of some well-worn horror tropes.

And why we might not want to.

When it comes to TV reboots, nostalgia can be a deadly weapon.

On Pluto, aliens, John Podesta's X-Files obsession, and the 2016 election

And it's in our solar system