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17 Cards in this Set
- Front
- Back
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large collections of planets, gas, dust and millions or billions of stars, bound together b gravity |
galexies |
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units of distance in astronomy equal to the distance that light travels in 1 year |
light-years |
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brightness |
luminosity |
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a cloud of interstellar dust and gas appearing as a bright or dark patch |
nebula |
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to revolve around another object |
orbit |
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a planetary system |
solar syatem |
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made of hot gas, shines bright in the sky, and there is usually over billions and thousands and millions of them |
stars |
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the death explosion of a massive star |
supernova |
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an object used to see far away |
telescope |
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a scientist who studies objects in space |
astronamer |
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a theory that suggest that the universe began from a single enormous explosion and is still expanding |
big bang theory |
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nothing can escape it |
black hole |
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a close group of similar objects |
cluster |
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scientist study~structure of the universe |
cosmologists |
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the open areas |
deep space |
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any planet that exists the outside the solar system |
exoplanet |
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10-31-16 |
HAPPY HOLLOWEEN |
