Ceres is a small, cold dwarf planet in the asteroid belt between Mars and Jupiter, but billions of years ago it could have ...

Space weathering expert Michelle Thompson OSIRIS-REx reveals why some gray asteroids reflect light at different wavelengths, like red or blue, more strongly. These results help shed light onto the ...

With a diameter of 1,440 miles, Pluto is farthest from the sun. While major planets make roughly circular orbits, Pluto ...

Today in the history of astronomy, our solar system's ninth member is downgraded to a dwarf planet.

On August 24, 2006, Pluto ceased to be considered a planet. A mixture of rock and ice located in the Kuiper Belt, a region of icy objects beyond the orbit of Neptune. This demotion ...

Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

A study suggests an Earth-sized planet, dubbed Planet Y, may exist beyond Neptune, affecting the orbits of icy objects in the ...

On August 24th, 2006, Pluto was officially demoted from being a planet, which apparently caused some people to be outraged. Pluto didn’t meet the final rule, as Britannica writes: So, what was the IAU ...

Pluto, once considered the ninth planet of our solar system, has been a topic of intrigue since its reclassification as a ...

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

NASA’s Dawn spacecraft, which orbited Ceres between 2015 and 2018, previously revealed some surprises about this frozen ...

Aliens may have been closer to Earth than first thought. New research from NASA reveals that Ceres, the dwarf planet in the ...