If you've been following exoplanet research over the last couple of years, you've definitely heard of K2-18b. Located 124 ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's impression of a planetary system with four planets, around a small red star, called LHS1903 with a large reddish-brown ...

WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that formed beyond the orbits of its gaseous ...

Out beyond the orbit of Neptune lies an expansive ring of ancient relics, dynamical enigmas, and possibly a hidden planet—or two. The Kuiper Belt, a region of frozen debris about 30 to 50 times ...

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers who discovered it using telescopes from NASA and the European Space Agency, ...

As next-generation telescopes map this outer frontier, astronomers are bracing for discoveries that could reveal hidden planets, strange structures, and clues to the solar system’s chaotic youth. Out ...

One of the longest stellar dimming events ever observed was likely caused by the gigantic saucer-like rings of either an unseen brown dwarf or "super-Jupiter" blocking its host star's light, ...

An artist’s impression of the stellar dimming event caused by a brown dwarf or super-Jupiter with massive rings (foreground) forming an opaque “saucer” through which some light from the star ...

Astronomers have discovered what appears to be an exoplanet that could be a distant Earthly paradise. Or it could be a frigid realm even chillier than Mars, incapable of supporting life. The margins ...

There’s a celestial connection on the horizon. Six planets—Jupiter, Mercury, Neptune, Saturn, Uranus, and Venus—are set to appear in the sky in what’s known as a planet parade on Feb. 28. And since ...

Planets are always lined up along the same celestial path, so this “parade” is all about timing Six planets will appear along the same stretch of sky just after this weekend, with the best views ...