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9 Cards in this Set
- Front
- Back
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large cloud of gas and dust floating in space
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nebula
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force that resists motion
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friction
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one of three basic galactic shapes
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spiral
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galaxy in which we live
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Milky Way
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one of three galaxies located closest to ours
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Small Magellanic Cloud
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the galaxy which resembles an egg or a football
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elliptical
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scientists who study outer space
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astronomers
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star system containing from millions to billions of stars
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galaxy
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an area containing no air or any other matter
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vacuum
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