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Vuoroveden vaihtelu

3.5
Average: 3.5 (2 votes)
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Doppler Effect

4
Average: 4 (5 votes)
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Determining the eccentricity of elliptical galaxies

4.142855
Average: 4.1 (7 votes)
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The Temperature of the Stars

3
Average: 3 (2 votes)
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Sunspots Dimensions

4
Average: 4 (2 votes)
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Stars and Spectra

3
Average: 3 (2 votes)
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Solar System

3.5
Average: 3.5 (2 votes)
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Position and Rotation of Starry Sky

4.333335
Average: 4.3 (3 votes)
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Olympic Games on the Moon

3
Average: 3 (2 votes)
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Manufacturing Simple Astronomy Measuring Tools

3
Average: 3 (2 votes)
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