12-15


Our Solar System

3
Average: 3 (3 votes)
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Cosmic Collisions

3.333335
Average: 3.3 (3 votes)
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Charles Wagon

4
Average: 4 (2 votes)
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Can we leave for Mars today?

4.25
Average: 4.3 (4 votes)
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Build a Solar System

4
Average: 4 (2 votes)
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Jupiter (photo)

0
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The Sun (Seen from Space)

1
Average: 1 (1 vote)
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The Aurora Borealis (Image)

4
Average: 4 (1 vote)
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Stars in a globular cluster collide

0
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Sextant (image)

0
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