The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

The Solar System has a total of 419 known moons around planets. If we count dwarf planets, asteroids, and other worlds, the ...

Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

Astronomers find a new moon orbiting Uranus, boosting its known satellites to 29 using the James Webb Space Telescope.

A team of astronomers announced Tuesday that a new satellite measuring roughly 90 football fields across was discovered ...

Recent research suggests a warp in the orbital plane of Trans-Neptunian Objects (TNOs) between 80 and 400 AU, hinting at the ...

Astronomers using the James Webb Space Telescope have found an unknown moon orbiting Uranus, bringing the planet’s total to ...

The new moon's estimated size is about 6 miles across, with its small size possibly contributing to its ability to hide from ...

The provisionally named S/2025 U1 is so small it had gone unnoticed by probes and telescopes for the past 40 years.

The new image, which shows Earth along with an even smaller point of light coming from the moon, harkens back to Carl Sagan's ...

Did the Hubble Space Telescope come up with evidence of the first moon orbiting a planet outside of our solar system? If so, it's a stunning discovery which changes our knowledge of the universe ...