In 2004, scientists found Sedna, a potential dwarf planet beyond the belt, had a strange orbit around the sun that hinted another large mass was gravitationally pulling it. A 2014 study found a ...

A surprising chemical difference between Pluto and Sedna, another dwarf planet in the distant Kuiper Belt, is helping ...

A surprising chemical difference between Pluto and Sedna, another dwarf planet in the ... The Kuiper Belt is a region in space beyond the orbit of Neptune that's home to Pluto and most of the ...