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Astronomy college course/Wikipedia Sidereus Nuncius/Quiz01/9

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Which two? It is useless to know that two of them are correct if you don't know which two. -Nathankr42


The answer should include which two of the answers are correct that way we can learn and know which one it is. -Xlynn89x

Instead of saying these two, it should have options to the answers that are correct. Nal2020 (discusscontribs) 03:30, 27 January 2016 (UTC)Nal2020