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The moon’s Darkside

Posted by ragknot on May 28, 2012 – 12:37 am

The Darkside of the moon receives some twilight like we do on Earth, but ignore that, assume it is dark since there no atmosphere to color it’s sky.

Make you best estimate, by percentage during our Earth day of 24 hours, what percentage  of the Darkside is completely dark?


This post is under “Tom” and has 3 respond so far.
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3 Responds so far- Add one»

  1. 1. Wizard of Oz Said:

    I’m in the dark here!
    During the moon’s 27.3 day orbit around the Earth its dark side (the part facing away from Earth) would face the sun half the time and would face away from it the other half of the time.
    In any 24 hour period, if it’s between the Earth and the Sun it will be fully lit up for the whole time. If it’s the other side of the Earth from the Sun it will be dark the whole time.
    I don’t think I’ve got thr question right somehow.

  2. 2. ragknot Said:

    Wiz,

    You have a good step toward figuring it out.

  3. 3. ragknot Said:

    The main part, (as you said) the moon orbit is 27.3 days. With one side facing the earth the whole time, it means that one moon day lasts 27.3 days. So for about 13.65 days a section would have 100% sun, then for the next 13.65 days it have dark. So for any specific 24 hours, there’s no % answer. During a 24 hour period, a section might switch, or might not.

    But I wanted people to know that half the time the Darkside is not always dark. So the name “Darkside” is wrong about 50% of the time. LOL

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