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Favorites by Pythagora (10 subjects)
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star formation by wtaskew (10 subjects)
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Favorites by nicola2001 (1 subject)
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Not Recorded by pmj (10 subjects)
Galaxy Zoo Talk
Favorites by Pythagora (10 subjects)
star formation by wtaskew (10 subjects)
Favorites by nicola2001 (1 subject)
Not Recorded by pmj (10 subjects)