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

Two dwarf planets within our solar system ... sources of liquid water beneath their icy surface," said Glein, raising the possibility that Eris and Makemake could contain possibly habitable ...

For decades, Pluto was celebrated as the ninth planet of our solar system. However, in 2006, the International Astronomical ...

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 ...