why sky is black at night when there are stars?
103104
Because they are so insanely far away that they don't light up the whole sky.  \n\nIt's like a car headlight all the way down at the end of the road as opposed to one right next to you.
650511
None, they up in the Sky, best seen at night. The Earth does revolve around a Big Star that can actually be seen in the day and not night. Make for a good Word Play/Riddle question. ;-D
8578
The light from the space shuttle, and often the earth in the background, is so bright that the start do not register on the picture.  Take a flash photo outside at night and you won't see stars in the background either.  In order for the faint light of the stars to register, you'd have to drastically overexpose the subject of the picture.
870628
Midnight 'till about 2a ET.  Find a spot where there are no lights in your eyes and stare at the sky.  I hope you see some shooting stars.  Make a wish if you do...
563639
huh?\n\nSome of the InSolAtion is trapped by the clouds. Esp. at night co heat up the Earth's surface.  \n\nAlbedo: Clouds absorbing the light
735058
If you shine a flashlight in a dark room, the beam of light must hit an object in order for you to see it. If there is nothing to obstruct the light, then you will still see a dark room despited the flashlight. The same is with the sun, the planets are visible because they obstruct the light and reflect it back to our eyes. Everything else is black because there is nothing there.
195526
It's the same reason stars twinkle--light traveling through the atmosphere gets distorted and flickers.
1127386
I can think of 2 possibilities.  One is when they use an occulting disk to block out the Sun (because it is so bright), so you see a black disk, and then you can see the space around the Sun.  They do that to look at the atmosphere around the Sun.  Take a look at the first link below.\n\nThe other possible answer is that the photographs are not taken in normal visible light but some other wavelength.  in the second link, there is a picture where the Sun's 'normal' surface looks dark.  The caption helps explain it.
1057175
Blue sky is cause the the defraction of blue light in the atmosphere... at night there is no light to defract....
1165536
There is no such thing as "dark light", there is only light or the absence of light. The dark sky is simply the absence of light. Dark isn't a real thing, it is just a lack of a real thing, the real thing being light.\n\nNote that the sky is not totally dark, juts too dark for your eyes to see. There is some dim light everywhere, from distant stars or the cosmic microwave background or whatever, but it is all "light".
940748
This is an illusion. The aperture used on cameras in space is so small as not to allow enough light in to be able to see the stars. Try using a video camera to video the night sky on earth, you will find that you won't see the stars then either. \n\nDon't worry, the stars don't disappear when you get to space.
963666
because it gets dark at night on this planet
74582
ALL STARS HAVE A GRAVITATIONAL PULL FROM THE OUTSIDE IN, WHEN A STAR LOSSES ALL ITD HYDROGEN THE GRAVITY PULLS THE STAR INWARDS(BASICALLY IT IMPLODES) WHNE IT INPLODES IT CAUSES A BLACK HOLE, WICH SUCKS IN THE STAR AND ALL LIGHT AROUND IT. THE INSIDE OF A BLACK HOLE IS CALLED THE EVENT HORIZON, NOTHING CAN EXCAPE THE EVENT HORIZON ONES ITS IN IT. NOT EVEN LIGHT! THATS WHY ITS BLACK! CAUSE ITS SUCKS UP ALL THE LIGHT. KINDA SCARY IF YOU ASK ME!
1115385
Dust and the expanding universe keep the night sky dark.
39416
if there was no source of light (sun,stars), there would just be dark!
782964
Unless you want to look at the moon,  you want a calm clear night with NO moon.  So, a night with low humidity, no to little breeze (causes turbulance in the light you see), and you want it dark.. so no moon or near new moon.  If it's too cold, there may be ice crystals in the air and that causes a halo around things.\n\nThe higher up in the atmosphere you can get the better.  \n\nIf you want to see a certain thing, you have to wait till that thing is directly overhead to see it most clearly.  That way you are looking through as little air as possible.
252206
I believe the correct term that you are looking for is "dark matter".\nConsider this: If all of space is filled with very bright stars, then why is it mainly dark.\nScientists came up with the theory of "dark matter", theoretical matter that absorbs the brightness of the stars.\nHowever, my theory is that space is just so completely vast and the stars are so far apart that there is just not enough light to fill it.\nConsider this: you are standing in the middle of a large room with no light. You take out a flashlight...how far can you see? It depends on the size of the room, right. If it is a small room, then the light beam from your flashlight may be able to reach one wall of the room...but say this room is very very large. Would you be able to see the wall then, considering you are standing in the middle of the room?\nSpace has no walls or boundaries...how far would your flashlight see then?...\nSo that's the "dark matter" theory and my theory.\nCiao!