Planets
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Which planet is hottest in the Solar System and why?
Venus has a very thick atmosphere with a greenhouse effect, making it trap infrared light from the Sun in its atmosphere
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What are the traits of the Outer Planets?
large size
mostly composed of gases
far from the Sun
have rings
many moons
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The Sun
99% of mass in the Solar System
made of 74% hydrogen, 25% helium
rotates once every 27 days
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