BYE BYE PLUTO !!!
Textbooks have to be rewritten because of one thing. PLUTO !!!
Pluto is now consdiered a dwarf planet and not a planet. A planet is a celestial body that has cleared its surrounding debris except for its settalites.
Other dwarf planets include Ceres (from the asteroid Belt), Charon (PLuto's largest moon), Pluto itself, and the recently nicknamed Xena dwarf planet.
A dwarf planet does not obey the definition in the second paragraph but it has suffiecient mass to be round.
Pluto also has two more moons, which may not be dwarf planets, Hydra and Nix. There may be even more we don't know yet.
But one of the furthest dwarf planet from the sun may be Sedna. Although it is extremely far away, some people speculate it might be a dwarf planet.
That's the end of the news of BYE-BYE PLUTO !!!.
