The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there is a distant Planet Nine out there.

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be visible across the U.S.

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

Scientists say this does not include more than 8,000 additional candidate planets awaiting confirmation. The post NASA ...

Astronomers are buzzing over 3I/ATLAS, a mysterious object hurtling through our solar system, and a new theory claims it can create planets.

New research using NASA's powerful JWST telescope has identified a planet 41 light years away which may have an atmosphere.

On Sept. 18, 1977, NASA's Voyager 1 spacecraft took a photo of Earth and the moon. It was the first time both the Earth and ...

The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...

Scientists using the James Webb Space Telescope observed dark beads and lopsided star patterns drifting over Saturn’s ...

The coldest planet in the Solar System is Uranus, which is surprisingly colder than Neptune due to its unique internal heat ...

Astronomers were fascinated after spotting an object from interstellar space hurtling through the solar system earlier this ...

Transmissions between Earth and our own spacecraft could tell us where to look for potential alien transmissions.