hatmoza said:
mrstickball said:
Hi, here are some answers I hope will help you:
1) The reason for this should be under the same reason we do not see stars during the day, regularly. Stars and to a lesser extent, the moon do not have a high enough magnitude to overcome the brightness of the sun. When the moon is full or new, it projects the highest amount of sunlight possible to the earth, and usually does break through to where you can see it in the day time in some cases. Also, the tilt of the earth does not always equate to the tilt of the moon, which further constrains the issue of seeing the moon regularly. However, in some rare cases, even, we can see other planets during the daytime. Venus and Mars are sometimes seen when they reach close proximity to the earth.
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I don't think you can compare the moon to stars as the the moon doesn't omit its own light but reflects the suns light. Thats why we can still see it during the day. Stars on the other hand are WAAAY further away than both the moon and sun and thats when your explanation comes into play.
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Actually, it doesn't matter.
The key is the apparent magnitude provided to the earth. The sun's typical magnitude is rated at -26.7, while a full moon is rated at -12.3. This equates to the sun being 449,000 times brighter than the moon is to us. The brightest planets in the sky rates up to -4.6 which would be Venus.
The absolute minimum magnitude for an object to be viewed during the daytime is -4.0. The brightest star (Sirius) is rated at -1.46 which is much lower than the threshold.
Here's a scale:
http://en.wikipedia.org/wiki/Apparent_magnitude
Hopefully this explains it a little bit better.
