For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home.

Space artists can sometimes stretch scientific data for a bigger visual bang. At New York's natural history museum, they ...

Solar System: Icy Worlds. Season 51 Episode 12 | 53m 34s Video has Audio Description, Closed Captions | AD CC. Visit strange, frozen worlds to discover the bizarre ice that forms beyond Earth ...

Astronomers posed over the past decade that dark comets, or objects that resemble asteroids but move like comets, may exist. Now, scientists have found a total of 14 of them.

Our solar system is made up of the sun and all the amazing objects that travel around it. Learn more about the planets, asteroids, and comets in our solar system. 3:55. Solar System 101.

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 years to complete one orbit around the sun. The object, known as 2017 ...

Our Solar System is full of mysteries, but if the inner planets are a puzzle, the boundary between the Solar System and interstellar space is a secondhand puzzle with half the pieces missing.

Despite common assumptions, the disk of our Solar System is warped, and the planets travel around the Sun in slightly eccentric (or oblong) orbits. Scientists now think that a mysterious object ...

However, if we don't include the Oort cloud, the coldest place in the solar system is very likely to be found on our nearest celestial neighbor. Earth comparisons. Related mysteries ...

Possible New Dwarf Planet Spotted Near the Edge of the Solar System By Will Dunham WASHINGTON (Reuters) -Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid ...

Scientists have unlocked one of the solar system’s many secrets from an unexpected source: a planetarium show opening to the public on Monday. At the American Museum of Natural History last fall ...