Why are you getting 'stupid' answers to your 'good' question?
2007-09-29 17:51:35
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answer #1
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answered by Anonymous
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Olbers' Paradox
Why isn't the night sky as uniformly bright as the surface of the Sun? If the Universe has infinitely many stars, then it should be. After all, if you move the Sun twice as far away from us, we will intercept one quarter as many photons, but the Sun will subtend one quarter of the angular area. So the areal intensity remains constant. With infinitely many stars, every angular element of the sky should have a star, and the entire heavens should be as bright as the sun. We should have the impression that we live in the center of a hollow black body whose temperature is about 6000 degrees Celsius. This is Olbers' paradox. It can be traced as far back as Kepler in 1610, and was rediscussed by Halley and Cheseaux in the eighteen century; but it was not popularized as a paradox until Olbers took up the issue in the nineteenth century.
There are many possible explanations which have been considered. Here are a few:
1. There's too much dust to see the distant stars.
2. The Universe has only a finite number of stars.
3. The distribution of stars is not uniform. So, for example, there could be an infinity of stars,
but they hide behind one another so that only a finite angular area is subtended by them.
4. The Universe is expanding, so distant stars are red-shifted into obscurity.
5. The Universe is young. Distant light hasn't even reached us yet.
The first explanation is just plain wrong. In a black body, the dust will heat up too. It does act like a radiation shield, exponentially damping the distant starlight. But you can't put enough dust into the universe to get rid of enough starlight without also obscuring our own Sun. So this idea is bad.
The premise of the second explanation may technically be correct. But the number of stars, finite as it might be, is still large enough to light up the entire sky, i.e., the total amount of luminous matter in the Universe is too large to allow this escape. The number of stars is close enough to infinite for the purpose of lighting up the sky. The third explanation might be partially correct. We just don't know. If the stars are distributed fractally, then there could be large patches of empty space, and the sky could appear dark except in small areas.
But the final two possibilities are surely each correct and partly responsible. There are numerical arguments that suggest that the effect of the finite age of the Universe is the larger effect. We live inside a spherical shell of "Observable Universe" which has radius equal to the lifetime of the Universe. Objects more than about 13.7 thousand million years old (the latest figure) are too far away for their light ever to reach us.
Historically, after Hubble discovered that the Universe was expanding, but before the Big Bang was firmly established by the discovery of the cosmic background radiation, Olbers' paradox was presented as proof of special relativity. You needed the red shift (an SR effect) to get rid of the starlight. This effect certainly contributes. But the finite age of the Universe is the most important effect.
References: Ap. J. 367, 399 (1991). The author, Paul Wesson, is said to be on a personal crusade to end the confusion surrounding Olbers' paradox.
Darkness at Night: A Riddle of the Universe, Edward Harrison, Harvard University Press, 1987
2007-09-30 00:57:36
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answer #2
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answered by Dreamstuff Entity 6
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Fine, stay willfully ignorant of this elegant universe that, according to some, is the creation of a god that is beyond regular logic and reasoning.
Here's a video:
http://youtube.com/watch?v=W35SYkfdGtw
It's a cosmological model of 20 million galaxies, only 1.5% of the visible universe.
The average person can see about 3,000 stars with the naked eye. But the universe is not limited to the eyes, just like the human can only see wavelengths between 400-700 nm and not infrared light. If you're still in doubt, maybe we can pop you into orbit around the globe, so you can see it for yourself? But I have the sense the trip would be wasted on a feeble mind.
I don't tolerate willfully stupid people very well -- It took much self-control it took to leave this message.
2007-09-30 00:54:15
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answer #3
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answered by Dalarus 7
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Let me start by saying that I am not an atheist.
I suppose that the whole phenomenon of being able to fly around the world in a plane is simple magic...? I think, I think, I think... What is your basis for these radical beliefs? Why are you so opposed to science?
Science does not claim to disprove the existence of God. All any self-respecting scientist will tell you about the existence of God is that it cannot be proven or disproven by science. Proof is the flesh and blood of science. However, science does not explain everything in the universe.
Science relies exclusively on what can be physically proven. It relies heavily on a posteriori evidence, but not everything can be explained this way. Even the atheist relies on faith and faith alone - the faith that God does not exist - for His existence cannot be proven nor disproven through scientific methods.
Instead of looking at science as the enemy of religion, I encourage you to think of it as an irrelevant and parallel idea.
2007-09-30 01:01:04
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answer #4
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answered by CAUTION:Truth may hurt! 5
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if the universe is finite and not all stars light has reached us it still doesn't explain what role black holes from which light cannot escape could possibly play inn this idea . anyway aside from olbers paradox I really don't see the connection to superstitious models but each to their own . I'm not a scientist but I'm not that foolish either .
2007-09-30 00:50:55
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answer #5
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answered by dogpatch USA 7
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Amen, sister.
Flat Earth Society will one day re-educate the masses....
NOTE:
The Flat Earth Society is not in any way responsible for the failure of the French to repel the Germans at the Maginot Line during WWII. Nor is the Flat Earth Society responsible for the recent yeti sightings outside the Vatican, or for the unfortunate enslavement of the Nabisco Inc. factory employees by a rogue hamster insurrectionist group. Furthermore, we are not responsible for the loss of one or more of the following, which may possibly occur as the result of exposing one's self to the dogmatic and dangerously subversive statements made within: life, limb, vision, Francois Mitterand, hearing, taste, smell, touch, thumb, Aunt Mildred, citizenship, spleen, bedrock, cloves, I Love Lucy reruns, toaster, pine derby racer, toy duck, antelope, horseradish, prosthetic ankle, double-cheeseburger, tin foil, limestone, watermelon-scented air freshner, sanity, paprika, German to Pig Latin dictionary, dish towel, pet Chihuahua, pogo stick, Golf Digest subscription, floor tile, upper torso or halibut.
2007-09-30 01:05:49
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answer #6
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answered by CanadianFundamentalist 6
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Odin made everything with blood, fire, and Ice. Yea if loki trys to decieve you Thor would protect you and if you die in a good battle with sword in hand you would be welcomed by Bragi and escorted to Valhalla by the valkyries.
2007-09-30 00:59:42
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answer #7
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answered by Anonymous
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ummmm..... suuurrrre....
well, to answer your question. There are actually billions and billions of stars in the universe. But, although they are very bright, since they are so far away (ie. billions and billions of light years) we can only see very few of them, and those that we can see are only very faint. That is why the sky is 'dark'.
and btw, what does this question have to do with atheists?
edit: oh yeah, i forgot to add. TROLL. lol
2007-09-30 00:51:46
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answer #8
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answered by SSejychan 4
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You have got to be kidding me.
OUR one star is RIGHT THERE, at least compared to the short span of distance as concerns the universe itself.
The others are so far away it's practically infinity. Because light travels as it does and nothing is blocking our view, we can see some of them. But they are FAR too far away to shine light ON us.
2007-09-30 00:53:44
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answer #9
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answered by Anonymous
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Ha ha, we all know that the stars are simply holes in the floor of heaven that lets God's light shine out.
2007-09-30 00:51:24
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answer #10
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answered by Anonymous
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Same reason why you cannot see the light in my house.
Stars are far away.
I wouldn't (not that I couldn't) shed light on the rest of the details.
2007-09-30 00:53:17
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answer #11
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answered by TrueBlueAqua 2
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