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Formation and evolution of the Solar System
The
formation of the
Solar System
began 4.6
billion
years ago with the
gravitational collapse
of a small part of a giant
molecular cloud
. Most of the collapsing mass collected in the center, forming the
Sun
, while the rest flattened into a
protoplanetary disk
out of which the
planets
,
moons
,
asteroids
, and other
small Solar System bodies
formed.
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