Why is it always dark in space although the sun is always visable?

Answer 1

You need an atmosphere or a gaseous cloud to scatter the photons

Answer 2

Space is a vacuum, meaning there are very few particles floating around in it. With no particles to bounce off of, light travels in a straight line. This means that you'll only see brightness in space if you're looking directly at a light source, or at something that reflects light (such as the moon).

This often seems counterintuitive because we're accustomed to living in the earth's atmosphere, surrounded by air molecules which tend to scatter light in all directions.

Answer 3

It is dark because of the absence of matter and light. Stars make space glow but since there are few stars (about maybe a trillion in the whole universe) and so much space, It looks black. We see the stars (including our sun) so well because there is no other light or matter to get in the way besides our atmosphere. (we would even be able to see it better if we didn't have one but we would die anyway.)

Answer 4

It is not always dark in space. It depends on how far you are from the nearest star. On Earth we a conveniently located close to a star, the Sun. In most parts of space you would be much further from a star since they are very widely spaced. Hence you will recive less light.

Answer 5

Is it only dark in space because we are only considering space to be what we see at night? Space is dark without the sources of light. Maybe it is a paradigm. Without light there is only darkness. So where did the light come from?

Answer 6

It is most likely because there is not enough volume of light (radiant fission) generated to create a visible volume of perceivable rays. There are of course radio emmissions all over the place that are visible to radio imaging(radio imaging tomography) as well as energy fields such as cold which aproach near infinite dimensions, as well worm holes or lessening of the density between points that allows frequencies to travel with less resistance.

Answer 7

Our universe is like a huge vaccuum. Meaning there's no "atmosphere" in space, meaning there are no particles or molecules to carry the light of the sun.

Answer 8

There is no light in space, only electromagnetic disturbances of space. When these disturbances strike matter they influence matter to act in certain ways.

Answer 9

There is nothing for the Sun to shine on. Spacecraft are visible because the Sun shines on them.

Also see "Olber's Paradox"

http://en.wikipedia.org/wiki/Olber's_paradox

This second one links to another explanation

http://home.wanadoo.nl/ronald.koster/olber.html

Answer 10

to put it quite plainly "light" is only visible when there is something for it to reflect off of