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by Theby on September 19th, 2008

Theby

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At the moment the moon is waning. Usually it looks like the typical arc shape upside down. Tonight I notice the moon is shaped like a football. How can this be if the shadow on the moon is from the earth. The shadow doesn't look right. Why is this?

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Answers. 2 helpful answers below.

  • by bigdada on September 19th, 2008

    bigdada

    I don't exactly know but maybe this has something to with it.:)
    http://2012planetx.com/videos/survivng/index.shtml#1

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  • by iwnit on September 19th, 2008

    iwnit

    1) I don't understand exactly what you are trying to say.
    The Moon is more or less a globus, just like the Earth. The shadow on the moon when it is waning appears because that side of the Moon is not under the direct light of the Sun. The dark side is not totally dark because it could get some other light than from the sun, for instance reflected light from the Earth.
    There is a shadow of the Earth on the Moon only when the Earth comes between the Moon and the Sun, during an eclipse.


    2) "Lunar phase (or Moon phase) refers to the appearance of the illuminated portion of the Moon as seen by an observer, usually on Earth. The lunar phases vary cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth, Moon, and Sun. One half of the lunar surface is always illuminated by the Sun (except during lunar eclipses), and is hence bright, but the portion of the illuminated hemisphere that is visible to an observer can vary from 100% (full moon) to 0% (new moon). The boundary between the illuminated and unilluminated hemispheres is called the terminator."
    Source and further information:
    http://en.wikipedia.org/wiki/Lunar_phase

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