The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and ...

Aristotle believed the planets revolved around Earth and God could not have created other worlds. Today, scientists scour the ...

NASA has released stunning new Artemis II images, including a “Crescent Earthrise” and detailed views of the lunar farside.

A single alien world can be misleading. A strange gas in an atmosphere might look promising, then turn out to come from ...

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

Breakthrough Listen will scan the the skies with the aid of the MeerKAT Telescope. They are targeting a million nearby stars.

Usually, comets are dormant blocks of rock and ice. They only wake up when they get close to a star. The intense heat causes ...

Scientists have found that young stellar cousins of our sun are calming down and dimming more quickly in their X-ray output ...

Easy: Venus is the weirdest planet in the solar system. The most distant major planet from the sun and the last stop before ...

Scientists find that planets need more than water to support life. Too little water may cause long-term overheating and ...

The subject of UFOs and aliens is vast and complex, making it impossible to summarize in one article. Flying saucers/UFOs made headline news throughout the world in 1947, sparked by two major, highly ...