Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.

Science. Goodbye to our Solar System as we know it: Astronomers confirm there is a new planet orbiting the Sun beyond Pluto Science. Extraordinary discovery in the animal kingdom: dolphins ...

New James Webb Space Telescope data reveal Pluto's high-altitude haze is a key driver of the climate on the dwarf planet, ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.

Moons and other matter. More than 150 moons orbit worlds in our solar system. Known as natural satellites, they orbit planets, dwarf planets, asteroids, and other debris.

The NSF–DOE Vera C. Rubin Observatory is set to revolutionize our knowledge of the solar system's "small bodies"—asteroids, comets and other minor planets.. The Rubin Observatory, under ...

Scientists are intrigued after spotting a highly unusual celestial object lurking at the very edge of our solar system. It's possible the trans-Neptunian object, dubbed 2017 OF201, is large enough ...

Astronomers have discovered a mysterious dwarf planet, 2017 OF201, far beyond Pluto. This discovery challenges existing theories and could alter solar system’s map.

This phenomenon, confirmed by James Webb Space Telescope data, makes Pluto’s atmosphere completely different from any other atmosphere in our solar system. More studies of Pluto’s atmosphere might ...

A prototype antenna for the proposed Next Generation Very Large Array (ngVLA) radio telescope in New Mexico. If funded, the project would greatly expand U.S. radio astronomy capabilities.

A sizable world has been found in a part of the solar system that astronomers once thought to be empty. It probably qualifies as a dwarf planet, the same classification as Pluto.. Temporarily ...