NASA’s James Webb Space Telescope has made an exciting discovery, revealing a new moon orbiting Uranus, estimated to be just six miles in diameter. This tiny celestial body adds a new chapter to our ...

From Jupiter's swirling storms to Neptune's icy depths, planets across our solar system are orbited by a fascinating cast of moons. Some are massive and geologically active, while others are tiny, ...

Tom Howarth is a Newsweek reporter based in Bristol, U.K. His focus is reporting on nature and science. He covers climate change, biodiversity, extreme weather, zoonotic diseases and more. Tom joined ...

The Solar System is home to a remarkable range of planets, from tiny rocky worlds to massive gas giants. But just how big are ...

A 4-billion-year-old volcano? New research finds that Io, the solar system’s most volcanically active moon, can brag just that. A recent study of Io’s sulfurous atmosphere suggests that Jupiter’s moon ...

Around 4 billion years ago, an asteroid hit the Jupiter moon Ganymede. Now, a researcher realized that the Solar System's biggest moon's axis has shifted as a result of the impact, which confirmed ...

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

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The Juno mission ...