Stars appear to be blue: 1. Because our atmosphere alters the appearance of the color of the stars 2., The hotter the star, the bluer its appearance because more heat means higher energy and the color blue has a higher energy than the color red.
haha im sure there are other more advanced reasons but thats the basic gist
:)
2007-02-20 18:47:16
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answer #1
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answered by The Voice of Reason 3
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Stars do have the colours you mentioned and we see them with that colour. You have not paid close attention to what you see. There are plenty of stars visible to the naked eye that are "orange". Look at the Orion constellation and you will most definitely see the red giant Betelgeuse and Aldebaran. Te colour of a star is directly connected to its temperature. The rule is: blue colour means very hot. Red means cool. Here cool is a relative term. and measured in thousands of degrees centigrade. Yellow is between blue and red so its halfway between hot and cool. Even though there are trillions upon trillions of stars in billions upon billions of galaxies we can only see with the naked eye no more than 6000 stars under ideal conditions lets say in the desert on a moonless night.
2007-02-21 02:57:13
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answer #2
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answered by The Stainless Steel Rat 5
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Stars are far away from the Earth . In between Earth and the stars there are so many layers of gases like Ozone layer . Thus light comming from the stars experiances many refractions (due to going from one layer to another ) thus their wavelength decreases . As the wavelength of red , orange or yellow is more while the wavelength of blue light is less(VIBGYOR) thus light (either red , orange or yellow) travelling from stars on reaching the Earth(To us) comes in the region of Blue light Thus appears Blue.
2007-02-21 02:53:45
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answer #3
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answered by rishabh 2
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Stars range in color from red to blue, depending on their temperature. Its difficult to tell the color of stars at night because human eyes suffer from color deficiency when lights are dim. It makes it harder to distinguish colors, but easier to see at night. I don't know exactly how it works, I haven't done any research on it. You can tell the color differences between stars, though. Try looking at the constellation of Orion. The bright star on the upper left is a red giant star (Betelgeuse). Compare that to the bright star on the bottom right (Rigel), which is a blue giant star. You might not notice that Betelgeuse is actually red until you compare it to something else.
2007-02-21 02:53:01
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answer #4
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answered by Anonymous
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Actually stars contain a wide spectrum, appearing from blue-white to deep red (like the red giant in Orion).
Try a prism and a telescope together sometime, you can see little rainbows!
Stars are red shifted so that makes them a little more red than their real color!
Realize, light is seen through our eyes, so the colors are what we 'see' not what they really are!
2007-02-21 02:46:17
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answer #5
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answered by Jim 7
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I believe its the burning of hydrogen. Star that are blue are very old star, practically created in the big bang.
2007-02-21 02:43:33
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answer #6
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answered by bien14 1
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the stars apear to be yellow , red and orange because they are twinkle but the red stars are moving away from us and the blue ones are moving towards us.
2007-02-21 10:15:12
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answer #7
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answered by Prince_Krona 2
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the stars that are blue are either super-hot or very old.
2007-02-21 16:03:24
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answer #8
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answered by hirim69 2
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Not always. Look at the sun, it's never blue.
2007-02-21 02:41:34
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answer #9
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answered by Yana U 3
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because they are so far away we cant see the correct color.
2007-02-21 02:41:21
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answer #10
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answered by Anonymous
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