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Question: Different Size and redish tent of the Moon
Can someone explain why at certain times the Moon looks redish in color, low
on the horizon, and appears to be much larger? Does the moon seem larger because it is actually closer? I was thinking that this may be the reason, but I can imagine the moving away to appear normal size again in just a few hours or less. And what about the redish tent? I understand that during a total lunar eclipse, the Moon remains visible by sunlight refracted through the Earth's atmosphere. And that the path of lower frequency red light is bent enough to shine on the Moon. However this isn't an eclipse of any kind (that I know of anyway) , so can someone explain what is happening when the Moon is large and red? Thanks, D- |
#2
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I think J. Scott Miller answered my question in the moon 9/8/03 11:36 PM
(Oops...Reddish, not Redish) Thanks, D- "Darrell" wrote in message ... Can someone explain why at certain times the Moon looks redish in color, low on the horizon, and appears to be much larger? Does the moon seem larger because it is actually closer? I was thinking that this may be the reason, but I can imagine the moving away to appear normal size again in just a few hours or less. And what about the redish tent? I understand that during a total lunar eclipse, the Moon remains visible by sunlight refracted through the Earth's atmosphere. And that the path of lower frequency red light is bent enough to shine on the Moon. However this isn't an eclipse of any kind (that I know of anyway) , so can someone explain what is happening when the Moon is large and red? Thanks, D- |
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"Darrell" wrote in message ... Can someone explain why at certain times the Moon looks redish in color, low on the horizon, and appears to be much larger? I'm not sure, but it's probably the same cause of sunset colors. Does the moon seem larger because it is actually closer? Yes. I was thinking that this may be the reason, but I can imagine the moving away to appear normal size again in just a few hours or less. It only takes 24 hours for it to orbit the earth. Its distance can vary up to 20,000 miles or so from closest to farthest in its orbit. And what about the redish tent? I understand that during a total lunar eclipse, the Moon remains visible by sunlight refracted through the Earth's atmosphere. And that the path of lower frequency red light is bent enough to shine on the Moon. However this isn't an eclipse of any kind (that I know of anyway) , so can someone explain what is happening when the Moon is large and red? Same reason as the red sky at sunset, I should think. -- ___________________________ Bonnie Granat GRANAT EDITORIAL SERVICES http://www.editors-writers.info Fast | Accurate | Affordable |
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And where was that?
"Darrell" wrote in message ... I think J. Scott Miller answered my question in the moon 9/8/03 11:36 PM (Oops...Reddish, not Redish) Thanks, D- "Darrell" wrote in message ... Can someone explain why at certain times the Moon looks redish in color, low on the horizon, and appears to be much larger? Does the moon seem larger because it is actually closer? I was thinking that this may be the reason, but I can imagine the moving away to appear normal size again in just a few hours or less. And what about the redish tent? I understand that during a total lunar eclipse, the Moon remains visible by sunlight refracted through the Earth's atmosphere. And that the path of lower frequency red light is bent enough to shine on the Moon. However this isn't an eclipse of any kind (that I know of anyway) , so can someone explain what is happening when the Moon is large and red? Thanks, D- |
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Well, the reddish color is pollution. Especially if there is a fire in your
state and you are downwind. Or are around a city or a suburb and have some pollution. The second question as to why it is to big is due to a phenomenon called the famous Moon Illusion. http://www.howstuffworks.com/question491.htm That's a good link for you. Personally I think it is a "glitch in the Matrix" Afterall, why can a person make more detail out? Oh no, I think I just started a new discussion.... "Darrell" wrote in message ... Can someone explain why at certain times the Moon looks redish in color, low on the horizon, and appears to be much larger? Does the moon seem larger because it is actually closer? I was thinking that this may be the reason, but I can imagine the moving away to appear normal size again in just a few hours or less. And what about the redish tent? I understand that during a total lunar eclipse, the Moon remains visible by sunlight refracted through the Earth's atmosphere. And that the path of lower frequency red light is bent enough to shine on the Moon. However this isn't an eclipse of any kind (that I know of anyway) , so can someone explain what is happening when the Moon is large and red? Thanks, D- |
#7
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Hi there Darrel. You posted:
Can someone explain why at certain times the Moon looks redish in color, low on the horizon, and appears to be much larger? The moon appears more reddish when it is low towards the horizon due the the Earth's atmosphere. It reddens the moonlight, scattering the shorter wavelengths more away from your viewing direction but allowing the longer (redder) wavelengths to come to you more directly. However, the true angular size of the moon is actually just a tiny bit *less* when it is low on the horizon than it is when it is nearly overhead, because we are just a little farther away from it when it is on the horizon. The "enlarging" effect you refer to is known as "the Moon Illusion", and is just that, a mere illusion. When the moon is low, you can see other objects to compare it to, but when it is overhead, there is little next to it for comparison. It is this difference which makes the moon seem to be a little larger towards the horizon that it does when it is overhead, even though it isn't all that much different in true angular size. Clear skies to you. -- David W. Knisely Prairie Astronomy Club: http://www.prairieastronomyclub.org Hyde Memorial Observatory: http://www.hydeobservatory.info/ ********************************************** * Attend the 10th Annual NEBRASKA STAR PARTY * * July 27-Aug. 1st, 2003, Merritt Reservoir * * http://www.NebraskaStarParty.org * ********************************************** |
#8
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"Bonnie Granat" wrote in message ... It only takes 24 hours for it to orbit the earth. Its distance can vary up to 20,000 miles or so from closest to farthest in its orbit. The Moon orbits the Earth at an average distance of about 384,400 kilometers. Its orbit is slightly elliptical so its distance from Earth varies by as much as six percent. The sidereal period of the Moon is 27.32166 days. That is, the Moon takes 27.32166 days to orbit the Earth and return to the same place among the stars. From an Earth based perspective, the Moon moves about 13 degrees per day. The 24 hours that you are thinking must be the Earth's rotation. |
#9
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I am so sorry. I am totally wrong!!! Please forgive me. LOL.
"Bonnie Granat" wrote in message ... "Darrell" wrote in message ... Can someone explain why at certain times the Moon looks redish in color, low on the horizon, and appears to be much larger? I'm not sure, but it's probably the same cause of sunset colors. Does the moon seem larger because it is actually closer? Yes. I was thinking that this may be the reason, but I can imagine the moving away to appear normal size again in just a few hours or less. It only takes 24 hours for it to orbit the earth. Its distance can vary up to 20,000 miles or so from closest to farthest in its orbit. And what about the redish tent? I understand that during a total lunar eclipse, the Moon remains visible by sunlight refracted through the Earth's atmosphere. And that the path of lower frequency red light is bent enough to shine on the Moon. However this isn't an eclipse of any kind (that I know of anyway) , so can someone explain what is happening when the Moon is large and red? Same reason as the red sky at sunset, I should think. -- ___________________________ Bonnie Granat GRANAT EDITORIAL SERVICES http://www.editors-writers.info Fast | Accurate | Affordable |
#10
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The large appearance of the moon when it is low on the horizon is pure
optical illusion. If you look through a window at moon rise and make a mark then as the moon rises make another mark as it clears the previous mark you will see that it does not change size. As to the reddish tint that is caused by air pollution, pure and simple. This condition has exhausted for as long as the moon has exhisted. Today the pollution is mostly caused by man but nature contributes is share also. Dave Nagel Darrell wrote: Can someone explain why at certain times the Moon looks redish in color, low on the horizon, and appears to be much larger? Does the moon seem larger because it is actually closer? I was thinking that this may be the reason, but I can imagine the moving away to appear normal size again in just a few hours or less. And what about the redish tent? I understand that during a total lunar eclipse, the Moon remains visible by sunlight refracted through the Earth's atmosphere. And that the path of lower frequency red light is bent enough to shine on the Moon. However this isn't an eclipse of any kind (that I know of anyway) , so can someone explain what is happening when the Moon is large and red? Thanks, D- |
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