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Card 6

Front

what are comets?

Back

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Card 7

Front

When was the solar system formed?

Back

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Card 8

Front

How was the solar system formed?

Back

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Card 9

Front

What are the relative sizes in the universe?

Back

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Card 10

Front

Where does the evidence for distant stars and galaxies come from?

Back

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Card 11

Front

What speed does light travel through space (a vacuum)?

Back

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Card 12

Front

What is a light year?

Back

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Card 13

Front

What does the finite speed of light result in?

Back

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Card 14

Front

What is Parallax?

Back

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Card 15

Front

What is relative brightness used for?

Back

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