Friday, November 1, 2013

Dwarf planets

Dwarf planets are objects that are not planets, but at the same time not asteroids, or comets. They are small planet like objects that orbit the sun. Most of them discovered so far. most are near the Kuiper belt. These object include, Pluto, Ceres, Haumea  , Makemake, and Eris. Pluto, discovered in 1930, is the 2nd most massive dwarf planet, and was classified as a planet for 76 years. But in 2006 Pluto was reclassified as a dwarf planet. Pluto has 5 known moons the biggest Charon,  is almost one third of the size of Pluto. Haumea is a very unusual dwarf planet. Haumea has a football type shape. Most likely caused by a impact that sent it flying. It has a 4 hour day. Scientist think that because of this Haumea's surface stretched to the shape that it is today. Makemake was discovered in 2005 and was nick named Easterbunny, because it was discovered right after Easter. Makemake is a reddish brown color, because of the suns radiation . and is covered with ethane ice. Ceres was known since 1801 people back then thought it was a missing planet but was classified as a dwarf planet in 2006. It has an orbit between mars and Jupiter,and is much smaller than are moon. Ceres is considered the biggest asteroid in the asteroid belt. Dwarf planets are found in and out of the solar system. In fact there might be lots that we haven't discovered yet.

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