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.

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

Scientists have just unlocked a new way to discover hidden worlds beyond our solar system, and the results are incredible. Using a powerful AI system called RAVEN, astronomers analyzed massive amounts ...

The president in February directed the Department of Defense to begin reviewing government files related to extraterrestrial ...

The Hubble Space Telescope has made multiple observations of exoplanet WASP-121 b, also known as Tylos. The extreme ...

A new study proposes detecting life in space by spotting patterns across many planets instead of focusing on one at a time.

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

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

A research team has developed a new approach to detecting life beyond Earth that does not rely on identifying specific ...

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

Two Earth-sized planets orbiting TRAPPIST-1 are locked in permanent day and night, with heat differences suggesting they are ...