In late 2024, astronomers spotted asteroid 2024 YR4 on a trajectory that could potentially threaten Earth. This observation ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

Two space missions reached their conclusion: one with a splashdown, the other with a quiet lunar death. And thrilling new ...

A new classification scheme may help us better understand planet formation — including the history of our own family of worlds.

Astronomers have confirmed the existence of four planets orbiting a star less than 6 light-years away with help from some of ...

Researchers can see celestial snapshots with the James Webb Space Telescope, the most powerful ever launched, of the star ...

Astronomers discover a super-Earth and a sub-Neptune 250 light years away from our solar system. These planets offer a ...

Saturn now leads the solar system with 274 known moons. Scientists say many moons formed from past collisions.

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a Sun-like star, ...

For example, ring particles — the tiny fragments of rock that make up the rings of planets like Saturn and Uranus — individually orbit their host planet but are not considered moons ...