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    Basic astronomy help please (:

    if anyone could help with either of these questions, it would be greatly appreciated, thank you (: 1) how long does a day on the moon last and why? 2) how many times larger does the earth look if you were on the moon,compared to seeing the moon from earth? (provide calculation) thanks a...
  2. B

    Angular size

    i have a list of problems dealing with angular size that i have to complete, but im a little confused on how exactly to solve them. if anyone could help me with this first example, it would be greatly appreciated. thank you (: europa is about 1.7 times more distant from jupiter than the moon...
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