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20 Cards in this Set
- Front
- Back
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A body of matter that travels around a star in a fixed path called an orbit.
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Planet
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The four inner planets which are small, dense, and have surfaces made of rocks
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Terrestrial Planets
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A large chunk of ice, dust, frozen gases, and rock fragments that moves through space
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Comet
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A large chunk of rock located between Mars and Juipter
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Asteriod
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A small piece of rock which moves through space
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Meteoroid
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A meteoriod which enters the Earth's atmospher.
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Meteor
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A meteor which strikes the Earths surface.
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Meteorite
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A hot, glowing sphere of gas that produces energy by fusion
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Star
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An atomic reaction in which smaller nuclei are joined together to form a larger nucleus
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Fusion
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A large cloud of dust and gas from which stars are formed
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Nebula
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The brightness of a star as seen through Earth's Atmosphere
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Apparent Brightness
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The brightness of a star as if no atmosphere for Earth
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Absolute Brightness
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The distance that light travels in one year
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Light year
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A cool, dark area on the sun surface
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Sunspots
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A sudden burst of energy given off by a sunspot which can extend hundres of thousands of miles into space
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Solar Flare
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A huge, arching column of cooler gases
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Solar Prominence
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Electrically charged particles from the sun which are caught by the Earth's magnetic field
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Aurora Borealis
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A large group of stars, gas, and dust held together by gravity
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Galaxy
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A group of galaxies
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Cluster
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Used to determine whether stars and galaxies are moving away or towards Earth
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Doppler Shift
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