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Thread: Half moon tilted lit up

  1. #1 Half moon tilted lit up 
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    When there's half moon, why doesn't the light from the sun appear to shine straight on the moon, but rather the moon is lit up a little tilted? I live in sweden.


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  3. #2  
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    Let's say you were in a space ship looking at the moon. If the window of your space ship is parallel to the ecliptic, which is the plane in which the earth orbits the sun, then the half moon will always look "upright." If you tilted your space ship to match the plane of the earth at some point on the surface, like somewhre in Sweden, then the moon would look tilted by that angle.


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  4. #3  
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    Awsome! Thank you! Now I can sleep! ;D
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  5. #4  
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    If it's nighttime, the sun is always below the horizon, and except at rare instants, is not directly below the moon (and in fact, if it's directly below the moon, it's a new moon, so the moon is invisible).

    If the partially lit moon is seen during the daytme, the sun can be above or beow the plane of the moon, so the tilt can be up or down.

    A good hands on experience is to sketch the moon every day for a few months. You will learn a lot if youwant to!
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