Study discovered that Chiron, a small icy world between Saturn and Uranus, is forming rings. This shows how small worlds ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

“If you build a map at a wavelength that water absorbs, you’ll see the water deck in the atmosphere, whereas a wavelength ...

New research shows how Jupiter carved out rings and gaps that changed how and when planets and meteorites formed.

As mankind was planning the first moon landing in the 1960s, an asteroid approached Earth—and still hasn’t left.

Earth’s ring likely persisted for millions of years, perhaps as a faint, dusty band arcing across the sky during the day and subtly glowing at night. It may not have directly caught the attention of ...

An international team of researchers has just revealed the existence of three Earth-sized planets in the binary stellar ...

Not all of the solar system’s building blocks formed simultaneously. Some of the first solid bodies, or planetesimals, formed ...