A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But not everyone agrees that it signals life.

Further studies are needed to determine whether K2-18b, which orbits a star 120 light-years away, is inhabited, or even ...

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

Neptunes, which are exoplanets whose size is between Earth and Neptune, teach astronomers about exoplanet formation and ...

A new study shows TOI-270 d is a fiery rocky exoplanet, offering fresh insight into the galaxy’s most common planet type.

A team of astronomers have detected what they call the most promising signs to date of a possible biosignature, or signs of ...

The initial report was based on observations from the powerful James Webb Space Telescope, a collaboration of NASA and its European and Canadian counterparts. But the results created a lot of hubbub ...

WASHINGTON >> In a potential landmark discovery, scientists using the James Webb Space Telescope have obtained what they call ...

TOI-270 d, located just 73 light years away, could be key to understanding a new class of planets. A study revealed it may be a giant rocky planet with a thick, hot atmosphere. NASA’s JWST detected ...

A bold geochemical model reveals that TOI‑270 d, a sub‑Neptune 73 light‑years away, is likely a giant rocky world cloaked in ...