|How do all the planets seem to be floating and
they don't fall in to space?|
|Question Date: 2013-02-27|
Good question! The planets in our solar
system seem to be floating, but they are
actually orbiting around the sun. The sun is a
massive star and exerts a strong gravitational
pull on the planets in our solar system. If the
planets did not “feel” the sun’s gravity, they
would fling off into space. Likewise, if the
planets were not moving when they initially
formed, they would be pulled right into the sun.
Planets’ orbits are a result of the balance of
their momentum (trying to fling them out into
space) and the sun’s gravity (trying to pull
All of the planets are falling into space.
There is no "up" or "down" in space; there is
only toward objects with mass, and away from
them. The most massive thing in our solar system
is the sun, which has about 99.8% of the solar
system's mass. The planets orbit the sun because
they are moving, but the sun's gravity causes
them to arc over and circle the sun instead of
just flying off into space, which is what they
would do if the sun weren't there.
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