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16 Cards in this Set
- Front
- Back
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Binary
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star
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|
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eclipsing
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star a
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|
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open
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cluster have
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globular
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star are
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|
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galaxy a
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huge
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|
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spiral
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galaxy galaxies
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|
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irregular
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galaxy an
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Universe all
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of
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|
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triple
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star star
|
|
|
What
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is
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|
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What
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are
|
|
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big
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bang 10
|
|
|
Four
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Forces electromagnetism,
|
|
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Matter anything
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with
|
|
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300,000
|
years
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|
|
first
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atoms first
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