About 5,800 planets beyond our solar system, called exoplanets, have been discovered since the 1990s. Of those, only four ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

Astronomers have spotted a small rocky planet that orbits perilously close to its host star disintegrating as its surface is ...

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 ...

While the discovery made by JWST is undeniably a “revolutionary moment” for us, it is not an Archimedes-type “eureka” moment.

Scientists know of over a dozen planets that orbit twin stars like the fictional "Star Wars" desert planet Tatooine. More ...

In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above the horizon on his desert planet Tatooine. Astronomers since then indeed have ...

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 ...

Scientists detect potential biosignatures in the atmosphere of exoplanet K2-18 b, hinting at possible alien life beyond our ...

K2-18b is an exoplanet orbiting a red dwarf star called K2-18, chilling 124 light-years away in the Leo constellation. It’s ...