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

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 ...

NASA's Mars Reconnaissance Orbiter recently photographed Candor Chasma in Mars' Valles Marineris, the largest canyon in the ...

Aliens may have been closer to Earth than first thought. New research from NASA reveals that Ceres, the dwarf planet in the ...

U-M astronomers are helping study a fast-moving, ancient, and massive comet that formed beyond our galaxy. A group of ...

Astronomers found hidden cosmic channels, like tunnels, connecting our solar system to distant stars, reshaping views of ...

NASA’s Hubble Space Telescope has captured the sharpest-ever view of the interstellar comet 3I/ATLAS, revealing clues about ...

Last month, astronomers made an exciting discovery, observing an interstellar object — only the third of its kind ever ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...