If there are somany stars in space, why is the backround balck?

Answer 1

Distance is the main reason. it is based upon the concept of the "inverse squares law".
If you measure the intensity of a light, (or the loudness of a sound, etc.), at a specific distance from a source you will get a certain energy per square centimeter value for it. If you double the distance from the source, the energy value will be reduced to 1/4 of the original value. This is because the original energy is now distributed over an area four times as large as the original area. Tripling the distance yields 1/9, increasing by a factor of five gives 1/25, etc.
When you get to interstelar distances, even for a light source as intense as a star, the area over which light energy is spread out becomes so great that only a few photons may still exist per square centimeter. This is far too low a level for our eyes to detect. As a result, we only observe an "absense of light" and see "blackness".
Even though there are a few hundred billion stars in our own Milky Way Galaxy, we are only able to see about 5000 of the ones closest to us. Many are hidden by dust clouds, but most are just too far away, and hence, too dim.
The Andromeda Galaxy, (about 500 million ligthyears away if memory serves me well), can only be seen as a dim cloud of light even though it contains even more stars than the Milky Way. It takes the light of all these stars combined to have strength enough to still be faintly visible when it gets here.
The real reason that a telescope lets you see more is because it covers a larger area than the puple of your eye. The big lens at the end gathers a large amount of light and then the other optics focus it to a beam the size of your eye. This compression of light energy brought to your eye lets you see things that would otherwise be too weak to see.
Because light energy is not destroyed, but rather dispersed, there is a very weak back ground "glow" from all directions that is too faint to see. The back ground 'glow' from the 'Big Bang' still exists and is detectable today. The discovery of Its presence a number of years ago was a major componant of the data supporting the event.

Answer 2

There can be varied reasons for that. i m not a student of astronomy, but i do have a keen interest in it.
According to what i have read, if we take into account the total area of the universe (which is supposed as infinite) and the number to stars in it and then also consider the relative distance between two stars, it becomes quite clear that there's not enough light to lit up the whole universe. Lets take the example of sun, the light of sun reaches only upto a particular distance may be little beyong the solar system. Also, the space is full of unusual objects. There are black holes, warm holes and what not. They all act differently to the light of the stars, some absorb it too. Space is still a complex place for us. We are such a small fraction of the whole universe, that understanding its each and every aspect is more or less difficult for us !

Answer 3

Because balck, as you say, is made up of tiny little microns called "galationimites." This forms the balck that you see. Balck is actually a sound rather than a color. The tune it reverberates through your ears when tilting your head at such an angle makes your brain perceive it as a color. Balck is a very odd thing.

Answer 4

Oh my, no one got this one....if we lived in a static, infinite universe, the night sky would be totally bright.
The universe is of course absolutely huge, probably infinite, but expanding. It has been so, as far as we know, for 15 billion years. Therefore the furthest we can see is 15 billion light years away in every direction. The light of anything beyond that point has not reached us yet. There is 0 (zero) information. Therefore it is black.
So there may be billions of galaxies with billions of stars in them, it doesn't fill space enough for us to see only light.

Answer 5

We can only see the light rays that go directly to our eyes. You see the world around you because the sun light bounces off the matter arround. All that matter absorbs some of the energy of that light, but as the Sun is so close to earth, lot of energy bounces off and we can see it.
On the other hand, the stars are much more distant, and the energy (light) coming from them is much weaker. Not enough to bounce off our atmosfere and make the sky blue, for instance.
So we only see the tiny fraction of light coming from the star in our direction. All other light from the star goes into empty space around, where there is nothing to deflect it towards us, and therefore we can't see it.

Answer 6

AKA the Olbers Paradox.

If the universe is infinite in age and in size, then every line of sight should hit a star. And the night sky should NOT be black, but it is. Why?

Because the universe is finite and size and age and is expanding; there is a horizon 15 billion-ish light-years away (the edge of the observable universe) that we can not see past.

Answer 7

Highway Star

Answer 8

u dummie stars aren't a source of light in space there is no light the atmosphere ias empty theres no air,water or light the sun wont cause enough light for the million billions trillions of km that space takes up.

Answer 9

In space, there are infinite stars, and they are really far apart, but what we see are them kind of close together, so we see the extra black in between them, which is just empty space waiting to be filled up by something that gravity pulls together.

Answer 10

All the stars are very distant frome each other; light travels at the speed of light, but has no matter where the reflect.