Why Pluto planet is no more in our solar family?
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because sun rays could not reach their so it disappear by low temperature......hope it helped u
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Since its discovery in 1930, Pluto has been a bit of a puzzle:
1. It's smaller than any other planet -- even smaller than Earth's moon.
2. It's dense and rocky, like the terrestrial planets. However, its nearest neighbors are the gaseous Jovian planets. For this reason, many scientists believe that Pluto originated elsewhere in space and got caught in the sun's gravity. Some astronomers once theorized that Pluto used to be one of Neptune's moons.
3. Pluto's orbit is erratic, exceptionally elliptical and crosses Neptune's orbit.
4. One of its moons, Charon, is about half Pluto's size. Some astronomers have recommended that the two objects be treated as a binary system rather than a planet and satellite.
These facts contributed to the long-running debate over whether to consider Pluto a planet. On Aug. 24, 2006, the International Astronomical Union (IAU), an organization of professional astronomers, passed two resolutions that collectively revoked Pluto's planetary status.
1. It's smaller than any other planet -- even smaller than Earth's moon.
2. It's dense and rocky, like the terrestrial planets. However, its nearest neighbors are the gaseous Jovian planets. For this reason, many scientists believe that Pluto originated elsewhere in space and got caught in the sun's gravity. Some astronomers once theorized that Pluto used to be one of Neptune's moons.
3. Pluto's orbit is erratic, exceptionally elliptical and crosses Neptune's orbit.
4. One of its moons, Charon, is about half Pluto's size. Some astronomers have recommended that the two objects be treated as a binary system rather than a planet and satellite.
These facts contributed to the long-running debate over whether to consider Pluto a planet. On Aug. 24, 2006, the International Astronomical Union (IAU), an organization of professional astronomers, passed two resolutions that collectively revoked Pluto's planetary status.
genious2000:
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