Science fiction has imagined everything from little green men to tentacled monsters—but real biology may offer clearer clues.

Discover how WASP-189b, a scorching alien world, mirrors its star's composition, reshaping the search for Earth-like planets ...

This summer, exoplanet science — the study of planets orbiting stars beyond our sun — took a big step forwards. Reports of helium gas escaping from the atmosphere of LHS 1140b propelled this exoplanet ...

The Etosha Pan in northern Namibia, the largest salt flat in the country, looks otherworldly in this satellite photo.

Some scientists believe the sheer number of stars, planets and potentially habitable environments in space makes extraterrestrial life plausible. But plausibility is not proof. Despite decades of ...

There is no chance in hell our species will be able to reach another Earth-like planet in the Universe in the foreseeable future, so the only way we can get a sense of the habitability of such places ...

In ancient mythology, the phoenix was a miraculous bird with a cyclical pattern of life and death, perishing in flames only ...

Honeycomb: The World Beyond impresses in the test with genuine genetic research, but completely forgoes violence and a co-op ...

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...