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The 14 moons of Neptune
are a strange bunch.
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Most of them are small
potato shaped pieces of ice and rock.
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Some are so far away from Neptune that
they need 29 years to circle Neptune once.
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Almost all of them are asteroids
trapped by Neptune's gravity.
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99.5% of all the mass around Neptune
is concentrated in Triton.
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It's the 7th biggest moon, and
more massive than all other known moons
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in the solar system that are
smaller than itself combined.
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Its surface area is about as big as the
mainland of Russia and Australia together.
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Also, Triton is one of only four objects
in the solar system that we know is geologically active.
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Triton orbits Neptune in the 'wrong' direction,
against the rotation of Neptune,
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which is unique in our solar system
for an object as big as Triton.
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We can conclude from this that
Triton hasn't always been a moon of Neptune,
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but probably was a dwarf planet that
was forced into submission by Neptune,
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when the solar system was younger
and more chaotic.
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The most popular theory here is that
Triton was once part of a double system,
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when Neptune migrated
to the outer edges of the solar system,
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its gravity interfered with the double system
and catapulted the other object into space,
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while Triton was forced into orbit.
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This would of disrupted the orbits
of other Neptune moons rather violently
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and would most likely have
either pushed them away from Neptune,
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or let them collide or crash into Neptune.
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This would explain why Neptune's moons
are so dominated by Triton.
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But, this will end one day,
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Triton is being slowed down by Neptune,
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and eventually,
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it will either crash into it,
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or be ground by Neptune's gravity into
a huge ring system, similar to Saturn's.
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So, don't by real estate on Triton.
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Fixed English Subtiles by
Mads Hagemann Nielsen - 2015
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Subtitles by the Amara.org community2845
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