Meteoroids are small chunks of rock, or a combination of rock and iron, that -
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Q.
What is the correct order of the planets from largest mass to smallest mass?
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Q.
The planets of the solar system revolve around the Sun in orbits because of the Sun's —
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Q.
The planets of the solar system travel in orbits but at different speeds. The reason that they travel at different speeds is that the Sun —
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Q.
The color of a planet provides clues to its composition. From space, much of Earth looks blue because most of its surface is covered with water. The surface of Mars is much different from that of Earth. Much of its surface is made up of iron oxide, or "rust." Which color would you expect Mars to be?
