Random PoP Question

IMG_6970, originally uploaded by Prince of Petworth.

Ok, my seventh grade science skills are a little rusty, remind again why sometimes it is possible to see the moon during the day.

7 Comment

  • That is not covered in 7th grade Life Science – try 6th grade!

  • I don’t know but there is a lunar eclipse tomorrow night!

  • Don’t forget about Venus! She’s often seen all day long

  • Ok, why would you comment to correct which grade it’s covered in, but not actually answer his question?

  • Basically, the moon is not fixed in the opposite position of the sun relative to the earth. If that were the case then your expectations would be met and the moon would “rise” about when the sun sets (6pm) and vice versa. This occurs only at a full moon becasue the moon IS opposite from the sun and we can see the full “reflection” of the sun. As the moon rotates around the earth it rises (and reaches maximum height) at different times. many days it is visible in the sky just hard to se against a bright sky behind clouds. Ie, whenever the moon is a cresent on its way to being new or invisible it reaches maximum height at 9AM.

    The Odd thing is that in your picture the moon is 3/4 full on its way to being full so it should not be high in the sky at 1 PM. I don’t fully understand that but it may be due to time of the year.

    not that you want more info but check http://www.physics.ucla.edu/~huffman/daymn.html
    for a better description.

  • I have not checked the ulrs that people posted, but the following is from my knowledge.

    Except, the time of new moon and lunar eclipse, sunlight always reflects from the moon surface to the earth. We only notice them at night, dawn or at dusk when the there is no daylight or daylight is not strong. However, if the sky is clear, you will be able to see the moon against the blue background as our eyes can differentiate the daylight from the light that is coming from the moon, and just good enough to identify the source of the light which is the moon.
    Therefore, we see moon during the day as a object but not a source of illumination.

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