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

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

It saw the discovery of dwarf planet Eris and how those very observations ... distant worlds, far beyond the orbit of Neptune. At the time, some people speculated on whether they should be ...

After about 30 hours of contact, Charon separated from Pluto and began to migrate into the orbit it has today. Denton and colleagues found that two other pairs of objects, dwarf planet Eris and ...

The theory could explain how the dwarf planet (yeah, we wish Pluto was still ... have torqued Charon into a close, higher circular orbit from which the moon would have migrated outward.

Atom orbit and Chemistry line icon motion graphic animation ... Alpha channel will be included when downloading the 4K Apple ProRes 4444 file only. 3D modeling Eris (dwarf planet) on a white ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

The dwarf planet is a bizarre, cryovolcanic world. However, the organic deposits discovered on its surface so far are unlikely to originate from its interior. The organic material found in a few ...

Using AI to comb through data gathered by NASA's Dawn spacecraft, scientists have conducted a detailed scan of the dwarf planet Ceres to map regions rich in organic molecules to determine whether ...