The catalog of known worlds beyond our solar system has crossed another threshold. NASA’s official tally now exceeds 6,000 ...

Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

Add Yahoo as a preferred source to see more of our stories on Google. Lurking throughout the distant cosmos beyond the solar system, researchers recently found what they believe could be another ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

For astrobiologists, the search for life beyond our solar system could be likened to where one would look in a vast desert—essentially, where there's water. And it turns out that one of the most ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

Mysterious Interstellar Comet Carries Water Unlike Anything in Our Solar System ...

Discovery: On July 2, 2025, astronomers confirmed Comet 3I/ATLAS, marking only the third interstellar object (ISO) ever detected passing through our Solar System, after 1I/ʻOumuamua (2017) and ...

As was forewarned in the entirely scientifically accurate 1996 documentary "Independence Day," this July 2 astronomers have detected an unknown object headed for Earth(ish) from beyond our solar ...

Sub-Neptune exoplanets tend to be much closer to their host star than Earth is to the Sun and are thought to have atmospheres made of steam over layers of an exotic phase of water that behaves like ...