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Well, one is that there is atmospheric distortion, distorting everything we look at.
The next is that if you're looking at something 500 ligh years away, it is 500 years older than it is us.

2007-03-23 11:24:19 · answer #1 · answered by Anonymous · 0 1

As light from the various objects in space reaches our atmosphere it hits our atmosphere; the various chemicals in our atmosphere can deflect the light the same way a mirror will deflect a beam of light. To test it just shine a light at a mirror at an angle; the light bounces off also doesn't shine as brightly. This is a major problem as how bright an object is is one of the keys to determining it's age and composition in addition to it's distance from the viewer.

Another problem is that there is so much light being produced by human activities that it actually block out the light of the stars the same way that a bright light makes a white wall look dull when viewed behind it.

2007-03-24 00:31:57 · answer #2 · answered by Robert B 2 · 0 0

Light pollution and atmospheric distortion.

2007-03-23 18:25:24 · answer #3 · answered by bravozulu 7 · 0 0

Atmospheric distortion due to turbulence which was already mentioned and our atmosphere absorbs certain wavelengths of radiation and we can't see it .

2007-03-23 18:25:35 · answer #4 · answered by Gene 7 · 0 0

clouds, light pollution, and the gas in our atmosphere can blur images

2007-03-23 18:24:48 · answer #5 · answered by healthyleeroy 3 · 0 0

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