English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

22 answers

Because of our atmosphere. Light can't be seen until it interacts with something. Similar to pointing one of those red pointing lasers devices. You see the red dot once it hits something but you don't see the beam.

2006-07-11 01:07:22 · answer #1 · answered by Dark Light 5 · 2 0

How do you define dark?
When it's night, it means your are on the face of the earth who doesn not face the Sun, it shows it's back to the Sun, so you face the big dark universe (and the Moon).
Now, the Universe itself is dark because the light of the other suns (starts) is simply not powerfull enough and it's absorbed by the interstallat dust that covers all unviverse.
Also, the finite speed of light restrain that all the light from all the stars to reach Earth, becuase the Unvirsese is finite (at least according to general university) and have 13 billion years, so the light from the first star cannot reach Earth, since the star died in the mean time.
Also, the emission from the Big Bang is redshifted to microwave wavelengths (the visible light get cooler and transforms itself into microwave radiations that fills the Universe) due to general relativity, where it forms the cosmic microwave background radiation. So in reality the explanation for the dark night sky results from the redshifting of all light from distant objects
Your question is known in Physics is Olbers' Paradox and was formulated in 1826 by a German Physicist.

2006-07-11 01:15:49 · answer #2 · answered by TeslaBoy 2 · 0 0

One can not see the light unless it either directly hit your eyes ( u see the sun directly this way very bright) or some thing should reflect it. You see the planets and moon this way. But when further the distance the light spreads out and the reflected light by other objects is very fain we couldn't see. Note: We don't see the planets of other stars because the star is very bright and the very nearby planets that reflect the stars light is very faint and close to a brighter object we don't see that . When you look at the picture from a powerful telescopes you do see the dust particles reflecting the stars light. It is not dark out there

2006-07-11 04:30:35 · answer #3 · answered by Dr M 5 · 0 0

Because there is nothing for the suns rays to reflect off of in space, the only reason you see light in the day is because the sun beams are reflecting off of the atmosphere (the air) and all the objects on the planet (there is no air in space, its just a void)

2006-07-11 01:07:54 · answer #4 · answered by greenguy415 3 · 0 0

nobody actually knows for sure, in theory space should be shinningly bright due to the fact the sun burns everything in its path (thats what it does with stars)

One reason of thinking is that because the universe is relatively young the light and heat from the the distance does not have enough time to catch up with itslef so it can not add up to a bright space.

If you want to research it further, it is called Olber's theory

http://www.curiouser.co.uk/paradoxes/olbers.htm

Try that link, it is a site about it, dont know how conclusive it is but worth a read anyway.

2006-07-11 01:07:52 · answer #5 · answered by Alistair B 3 · 0 0

You see something when light it reflected off of an object or when the object produces its own light source.

You can see the sun and the stars because they give off light which can go directly to your eyes.

You see the moon because light from the sun bounces off of it and then comes back to you.

Space is dark because there is nothing for the light to reflect off of. It just keeps on traveling away from us.

2006-07-11 01:11:33 · answer #6 · answered by BoredomStrikes 3 · 0 0

Sun is a medium size star.It is only sufficient for or solar system
but space is zillions of light-year big and vast.So sun is not even
millionth part of stars as well as space & universe.

2006-07-11 02:48:18 · answer #7 · answered by pawas s 1 · 0 0

You can only see light when it reflects off of something. Sense there is nothing in space there is nothing to reflect light off of. (until the light hits something like the moon, or planets, or a satellite)

The reason you can see a flashlight 'beam' or laser 'beam' here on Earth is because the light is being deflected to our eyes by dust particles in the air.

2006-07-11 01:13:07 · answer #8 · answered by space_man_stitch 6 · 0 0

the sun is just an average star, and it is not that big compared to other stars, it gives up light to nearby planets, and the reason why it is dark in space is the same way why the color of the sun is not black,.,,,,... hahahaha!!! LOL

2006-07-11 01:09:53 · answer #9 · answered by Mark Curtis 2 · 0 0

If u are referring to the colour of space then it is because there is very little matter (6 protons per cubic metre) for sunlight to reflect off therefore u see only the colour black and nothing else.

2006-07-11 01:08:59 · answer #10 · answered by suck sess 2 · 0 0

It is dark in space because it is a vacuum and their is no atmosphere that will hold in the rays of light.

2006-07-11 01:07:50 · answer #11 · answered by Anonymous · 0 0

fedest.com, questions and answers