Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

Stargazing Brits will have the rare chance to witness a remarkable alignment of the planets from tonight. Ice planet Uranus ...

Astronomers from MIT, the University of Liège in Belgium, and other institutions have stumbled upon a truly bizarre planet—an ...

Researchers believe they have rediscovered a mysterious star system first spotted in 2011. If true, the alien sun and its ...