Beyond Neptune, a celestial object puzzles astronomers with its synchronized motion with the giant planet. Its inclined orbit challenges current models of the outer Solar System. Discovered by an ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers have detected a new exoplanet ...

What can sub-Neptunes, exoplanets whose sizes are between Earth and Neptune, and which are between the known for their water-rich compositions, teach astronomers about both where and how to find life ...

The rocky exoplanet is nearly four times Earth's mass and may offer new insights in the search for habitable worlds.

Astronomers confirmed a new "quasi moon" known as 2025 PN7 will be around until at least 2083, giving plenty of time for ...