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ISS

3
Average: 3 (1 vote)
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Hubbleteleskopet

4
Average: 4 (1 vote)
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En stjärnas livscykel

3
Average: 3 (1 vote)
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Koordinatsystem

2
Average: 2 (3 votes)
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Kalendern

2
Average: 2 (1 vote)
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Stjärnornas rörelse

2.333335
Average: 2.3 (3 votes)
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Keplers 3. lag

5
Average: 5 (1 vote)
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Robotteknik

2.5
Average: 2.5 (2 votes)
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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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