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Blinkar stjärnorna

2
Average: 2 (1 vote)
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Månen - en introduktion

3.5
Average: 3.5 (2 votes)
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Gravitation

3
Average: 3 (3 votes)
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Liv i universum

3
Average: 3 (1 vote)
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Raketer

3
Average: 3 (1 vote)
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Omloppsbana - snurrigt värre

4
Average: 4 (2 votes)
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Analemma

3.666665
Average: 3.7 (3 votes)
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Bygga och använda ett solur

3.5
Average: 3.5 (2 votes)
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Jordaxelns lutning

3.5
Average: 3.5 (4 votes)
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Dagens längd

3
Average: 3 (2 votes)
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