A popular Chinese hard sci-fi novel imagines a coming war with an alien species and gets some things right in the process, and badly fumbles the others.

Science fiction likes to show us aliens that explore the galaxy with ease. But the reality may for intelligent life on other worlds may be very different.

A new discovery of organic molecules in Martian sediment doesn't prove there was life on the red planet. But it does help build the case for it.

An astronomer who keeps making wild claims about alien technology in our solar system now claims there are parts of an alien spaceship in the Pacific Ocean.

Did humanity evolve too late to ever meet a galactic federation of intelligent life?

A popular thought among experts thinking about alien life is that any intelligent life we discover in space will be artificial. But how realistic is this notion?

Former military pilots and officers often share UFO stories with the media. But what if some of those objects really are from alien words? How would we know? What would we do?

As the international race to explore Mars heats up, some writers are resurrecting an old hypothesis that life on Earth really started on the red planet.

According to numerous pop sci outlets, the Wow! Signal is a comet in a strange orbit around the sun. But according to experts, this explanation just doesn't fit the relevant data…

An immensely powerful flare from a tiny red dwarf is helping us understand just how important these stars can be to giving life across the universe to chance to develop.

A star named V883 Ori is going through a growth spurt, and as it does, it's showing us just how abundant the building blocks of life might be throughout the universe.

New models trying to infer the geology of potentially habitable moons orbiting Jupiter and Saturn hint at surprisingly cool, geologically inactive worlds, the opposite of what a diverse alien ecosystem would need.

We think of water as the most essential ingredient for life, but as a recent discovery shows, it can also be toxic to living things in alien environments

A pair of researchers propose that a simpler molecule used in photosynthesis by ancient bacteria may have been widespread on early Earth and could be prevalent on alien worlds.

A new proposal posits that some of the fast radio bursts we've been routinely detecting may be coming from aliens, though not on purpose...