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

While almost everyone knows about Pluto being a dwarf planet, many are not aware that there are five others in our solar ...

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

Of the five dwarf planets in the Solar System – including Eris, Ceres, Makemake, and Haumea – Pluto is easily the best-known due to its brief categorization as a regular planet. Long before it ...

The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting ...

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 areas ...

5 (UPI) --On this date in history ... It was considered the largest known dwarf planet in the solar system until a year later when Pluto was downgraded from being a planet. In 2008, tribal ...