why does the sky turn red at night?
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WHY IS THE SUNSET RED?\nAs the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer wavelengths are left in the direct beam that reaches your eyes.
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Red moons rising are actually fairly common usually as a result of large amount of dust, smoke, or other pollutants in the air
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The moon appears red because of the amount of pollution in the air.
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Frosty is right, Otisabi is wrong. The round shape of the atmosphere bends the light. You also get a reddish taint to the moons colour when it's close to the horizon. This is due to the red part of the light reflected from the moon hitting your eye, while the rest is into space. If you've ever looked into a round fishbowl you'll see how it distorts light to make things look larger.
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A Red moon or sun could mean that the air is full of smoke, so it may indicate a bushfire is on the go somewhere, or as previously stated a red moon could be a result of a lunar eclipse.\n\nA good indicator of an earthquate is big cracks in the ground and lot's of collapsed buildings, but that's always after the event.
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as the earth spins on it's axis the distance from any one given point on earth to the sun changes throughout the day. Near midday the sun is directly above you and closest to you, thus it is very bright. As the day goes your point on earth spins away from the sun, making it further away, and you are also seeing it through all the dust in the atmosphere, making it less bringht and appear yellow/red.
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Although sightings of these colorful events have been documented in the past, this phenomena has come to the front of geophysical interest in recent times. Red sprites typically extend above the cloud tops up to heights of nearly 95 km. After several imaging campaigns in the central United States during1993 and 1994, there has been an increased demand to explain these naturally-occurring colorful flashes. The VLF group is actively pursuing scientific explanations along with our colleagues in the field. \n\nmore info in\nhttp://www-star.stanford.edu/~vlf/Red_Sprite/
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it depends on your place in space. are you in a straight line with a planet and sun,  then there is night and vice versa
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Even on a cloud free night the atmosphere will still affect the infra red light as it descends to earth.\n\nEarth;s air is continuously moving, a ray of starlight is refracted in a random direction causing the star we see to twinkle. This twinkling is extremely irritating to astronomers as it blurs the images from telescopes, leaving the resolution of the largest observatories no better than that from a 10cm telescope. (Larger instruments are built to collect more light, producing brighter images but with the same resolution). The only way to entirely avoid this problem is to launch a telescope into space. This is why NASA built the Hubble Space Telescope.
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Depends on atmospheric conditions ,small water droplets form into ice crystals in the upper atmosphere. The moon reflects light into these droplets causing refraction of that light, givind a halo effect sometimes even a 'luna rainbow'
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Because it's blue. . .\n\nWhen sunlight travels through the atmosphere, blue light scatters more than the other colors, this makes sunlight and visable sun rays a yellow-orange color. The scattered light makes the sky blue; the transmitted light makes the sunset reddish orange.\n\nBecause this scattered light is so brightly blue we cannot see through the atmposhere into space. . .only at night when there very minimal light to refract seeing as how the sun had set is on the other side of the planet!
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because it gets dark at night on this planet
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I've heard that the sky turns a type of dirty greenish greyish colour before a severe hailstorm, or a tornado.  But I'd like to think that the sky would do that because of the types of clouds, and the absorption and reflection of light.  I've never seen it myself to say for sure. \n\nI've also been told that there are green flashes that apprear on the sea (but the sea level has to be right) around sunset.  I've never seen one of those either. Apparently, it's one of those must-see things.\n\nAnd then again, another place where greens exist is in the northern lights (Aurora Borealis)...  There are greens and they're gorgeous.  Now I've witnessed that, and it's simply GORGEOUS!!\n\nlike you said, there's always the good old rainbow!  I've seen that too :p\n\ncheers!!
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In our lifetimes it will be purely because of the filtering effects of the atmosphere and clouds. When there is dust, water, chamicals or ice in the atmosphere the colours let through will change, just like putting a coloured scarf over a lamp. \n\nWhen the sun is low in the sky the high frequencies are scattered, allowing more of the red-yellow light to reach us.\n\nAlthough the sun is predicted to change colour and grow, it will be over bilions of years.
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Actually it's more of a pink than red.  And it's not always red.\n\nThe red comes from all the dust suspended in the atmosphere, which comes from the severe dusts storms that are common on Mars.  The Martian "soil" is red, so when a lot of that "soil" or dust is in the air, that makes the sky look pink.  The soil is red because there's a lot of a rust-like compound in it.\n\nIf all the dust settles out of the sky, then the sky would be a pale blue color.  Blue for the same reason Earth's sky is blue.  Pale because the Martian atmosphere is very very thin.
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The stars are out all the time it's just that during the hours of daylight it's too bright to see them.  There will be stars every night, whether cloud obscures them or not is a different matter.
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a night with no stars is due to the cloud cover. this covers also prevents the pollution,air and other gases from going up.which results in warmer nights.a night with stars is cooler