Interesting Facts About Planets Uranus, Neptune & Pluto, And Their Moons (Part 4/4)





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Uploaded on May 6, 2010

Links to information about Pluto's moons:

Facts about Charon:

Facts about Hydra:

Facts about Nix:

What does 'Clearing the neighbourhood of it's orbit" mean?

In the end stages of planet formation, a planet will have "cleared the neighbourhood" of its own orbital zone, meaning it has become gravitationally dominant, and there are no other bodies of comparable size other than its own satellites or those otherwise under its gravitational influence. A large body which meets the other criteria for a planet but has not cleared its neighbourhood is classified as a dwarf planet. This includes Pluto, which shares its orbital neighbourhood with Kuiper belt objects such as the plutinos. The IAU's definition does not attach specific numbers or equations to this term, but the extent to which all the planets have cleared their neighbourhoods is much greater, by any measure, than that of any dwarf planet or any candidate for dwarf planet known so far.

Answered by Wikipedia.

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Music found on computer called 'untitled' or 'title'. I found it on my old PC at:


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