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10 Cards in this Set
- Front
- Back
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a light year is
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the distance light travels in a year
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the variable that determines whether a protostar becomes a star is it
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mass
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A supernova is the explosion of a dying
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High mass stars hi
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From the the cosmic background radiation scientist can infer that just after the Big Bang Theory the universe must have been -
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Hot
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Eclipsing binary stars can sometimes be identified because
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They become dimmer at regular intervals
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The theory that astronomers have developed to describe the formation of the universe is called the
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Big Bang Theory
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The solar system formed from
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at is a giant cloud of gas and dust
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Small asteroid like bodies
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Planetesimals
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The absolute brightness of the stars depends on
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Size and temperature
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the mysteries that may cause the expansion of the universe to accelerate is called
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Dark energy
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