Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

Scientists have been unable to determine whether the dwarf planet’s organics were produced by its own chemical processes or ...

For decades, Pluto was celebrated as the ninth planet of our solar system. However ... leading to Pluto’s reclassification as a dwarf planet. This decision sparked widespread debate among ...

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

Enaiposha orbits a red dwarf star 47 light years away from our own Earth, upending previous theories of how planets are formed and structured and giving scientists a tempting window into the ...

By tracing the corkscrew wobble of two stars as they move through the sky, the Gaia space mission has discovered one new giant "planet," plus a new brown dwarf.

The dwarf planet ... reached the inner Solar System only later. For the current study, the researchers looked for previously unknown deposits of organic material on dwarf planet Ceres.

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien astronomers could also be scanning Earth.

Its journey could have permanently altered the orbits of the outer planets. This cosmic visitor, possibly a brown dwarf ... shift our understanding of the solar system’s evolution.

Marcussen illustration Scientists have dubbed the exoplanet, a world well outside our solar system, Gaia-4b. The brown dwarf, not quite a planet or a star, is Gaia-5b. Respectively, they are 244 ...