0.25 didactic hour


Tähden väri

3
Average: 3 (1 vote)
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Kuukävely

5
Average: 5 (1 vote)
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Seasons - Midday all Year

0
Certified content by COSMOS
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Doppler-Effekt (Physlet)

0
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Solar Eclipse 2008, Siberia

4
Average: 4 (2 votes)
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Total Solar Eclipse 2006

5
Average: 5 (2 votes)
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horizontalsystem

0
Certified content by COSMOS
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Aequator coordinates system

3
Average: 3 (2 votes)
Certified content by COSMOS
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Stellarium_Software (freeware)

0
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