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9 Cards in this Set
- Front
- Back
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What galaxy does Earth belong to? |
The Milkyway |
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How long ago (aprox) was the big bang? |
14 billion years ago. |
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What does a nebulae consist of? |
Masses of gas and energy. |
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What are the two major theories on the beginning of the universe? |
The big bang and steady state. |
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What does the magnitude scale measure? |
The brightness of a star. |
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What does absolute magnitude measure? |
The size of the star. |
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What do nebulae consist of? |
Clouds of gas and dust |
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What is a light year? |
The distance light travels in a year |
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What theory proposes the end of the universe will be the end of time? |
The big rip |
