How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between five and 18, plus hundreds of potentially undiscovered ones, depending on ...

This discovery represents a major milestone in the search for exoplanets around our nearest Sun-like neighbour.

Those were some reasons Pluto was demoted by the International Astronomical Union from one of the solar system's official planets to a "dwarf planet" in 2006. UB313 was renamed Eris in 2006 after ...

In 2006, and after much debate, the International Astronomical Union came up with a new definition for a planet. And for the first time, the term "dwarf planet" was used.

The dwarf planet, named 2015 RR245 for now, has an unusual orbit — it's very large and looping, and takes 700 years to travel around the sun. The researchers estimate that little 2015 RR245 is ...

Out beyond Neptune, past Pluto, through the chaos of the Kuiper belt to a point some 13.7 billion kilometres from the sun, a new dwarf planet has just joined our solar system. The Iowa-sized ...

The Goblin is “about 300 kilometers in diameter, on the small end of a dwarf planet,” said Scott Sheppard, an astronomer at the Carnegie Institution for Science in Washington who discovered ...

If winds on the dwarf planet swirled in a different direction, its landscapes might look completely different." "Sputnik Planitia may be as important for Pluto's climate as the ocean is for Earth ...

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