If forced to choose one descriptor for the octopus, the best word may be “otherworldly.” These truly amazing marine animals ...

A new study suggests alien life may be easier to detect through clusters of similar planets rather than single biosignatures.

Aristotle's views on the nature of the cosmos dominated the Ancient Greek world. He argued that there's only one world, at ...

The ExoLife Finder (ELF) looks like no telescope ever built. A spectacular crown of 15 five-meter mirrors perches atop a ...

Earth’s sky is only one version of a cosmic phenomenon. Other planets offer skies filled with strange colors, thick ...

Scientists decided one way, but some states still see Pluto as a planet. So I asked the next generation their opinion.

Can desert planets with alien life, like the one in the movie *Dune*, exist? Scientists’ answer leans toward “no.” A study ...

Behind the acid blood and jump scares of the Alien franchise is an even more insidious horror: a single employer with ...

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and living safely—beyond our planet. “I was like, ‘OK, I'm pretty sure that ...

In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

Did you ever hear of the Syfy comedy starring Alan Tudyk called Resident Alien? The concept is an alien crashes on Earth and ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...