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star formation by wtaskew (10 subjects)
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Favorites by DavidEW77 (10 subjects)
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Favorites by rick davies (10 subjects)
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Galaxy Zoo Talk
star formation by wtaskew (10 subjects)
Favorites by DavidEW77 (10 subjects)
Favorites by rick davies (10 subjects)
Favorites by jrgdavies (10 subjects)