The discovery boosts the chances of finding extraterrestrial life.

Astronomers have discovered a rocky exoplanet that has an atmosphere and sits within the habitable zone of a solar system.

Astronomers using the James Webb Space Telescope have added a third directly imaged planet to Beta Pictoris, a young, nearby star that has become one of the most studied planetary systems beyond the ...

The object orbits a brown dwarf that orbits a star, and astronomers aren’t sure if it’s a planet, a moon — or something else entirely.

Mercury's massive metallic core leads to a contraction of its rocky exterior, resulting in numerous fractures and cliffs ...

New research using NASA's powerful JWST telescope has identified a planet 41 light years away which may have an atmosphere. The planet is within the "habitable zone," the region around a star where ...

An artist's illustration of a possible ninth planet in our solar system, hovering at the edge of our solar system. Neptune's orbit is shown as a bright ring around the Sun. Scientists in Taiwan ...

Contracts with the U.S. government are testing Planet's reputation for transparency.

Scientists say exoplanet LHS 1140b shows promising signs that it could have an atmosphere, making it potentially suitable for ...

Planet 9 would fall somewhere in between these categories. It could be what is known as a Super-Earth, a rocky planet larger than our own, or a sub-Neptune, a gaseous world less massive and slightly ...