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Science: Astronomy Facts

The Big Bang occurred a little less than ____ billion years ago. 2
The Moon is about ____ miles from the Earth. 8
There are ____ planets in the Solar System. 14
The Sun is about ____ times larger than the Earth. 30
About ____ planets have been discovered in the Milky Way. 80
Mercury and Venus have no moons. Mars has ____ moons. 100
Saturn and Jupiter have about ____ moons each. 5,100
Neptune is about ____ astronomical units (AU) from the Sun. 239,000