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The tendency of a moving object to continue in a straight line or a stationary object to remain in place
The process of hydrogen atoms joining together to form helium. The sun's energy comes from nuclear fusion
The outer layer of the sun. Seen during a total solar eclipse. Looks like a white halo around the sun
The 4 planets closest to the sun. They are small and have rocky surfaces. Mercury, Venus, Earth and Mars
When a planet rotates from east to west, the opposite direction of most planets. Venus and Uranus have retrograde rotations
The 4 planets farthest from the sun. Do not have solid surfaces. Jupiter, Saturn, Uranus and Neptune
More than 300 in the solar system. To small and numerous to be planets. Found in a belt called the asteroid belt between Mars and Jupiter
A natural or artificial object that revolves around an object in space. Example, the moon is a natural satellite
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