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The Solar System
What is the Solar System?
Our solar system is the
name given to the Sun
and the planets that orbit it (see this picture).
The Sun is a star. There are eight
and many dwarf planets and asteroids that orbit
the Sun. Some of the planets have moons.
The movement of all the planets and
is governed by the force of gravity.
There are a very large number of solar
in the Universe. Some of the planets
in these other solar systems may support life.
Between the planets, stars and
lies the vacuum of space.
A vacuum is the absence of all substance.
Space is not a perfect vacuum
but the substance that does exist is very thinly spread.
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