why couldnt you look into the sun,but you can into the sky?

Question

Although it is the sky which is included in the other one.

Answer 1

The Sun is very bright and by focussing the light onto the back of your eye (the retina) with or without a telescope, you are putting a lot of energy (both optical light and infra-red) onto a tiny area. At some point in your life you may have tried to set paper on fire using a magnifying glass, so just think about that being done to the back of your eye. It isn't nice. Even more scarily is the fact that the retina of your eye does not have pain receptors, so you will not even feel the damage being done. It may not even become apparent until later. So do NOT look at the sun.
However, the light is spread out throughout the sky, and so there is only a little energy going into your eye, and it is innocuous. So you can look at the sky!

Answer 2

Take a magnifying glass and hold over a sheet of paper, at the focus point enough heat is generated to start a fire. Your eye works the same way. When pointed at the sun, the solar radiation will be focussed and burn the inside of the eye.

Only a small scattering of solar light comes from the rest of the sky. The same glass can focus an image of the sky on the paper (hard to see unless pointed away from the sun and in an enclosed dark box) but it is not enought to cause any heating. Our eyes are adapted to this level of radiation and are not harmed.

Answer 3

To be more specific to this question,the Sun contains harmful rays such as UV rays,Infrared etc....Sun has also a very high temperature about 6000K.So if you look into the sun directly the intense radiations of the sun has a piercing effect on your eye.But the sky has no colour or radiations of its own.The blue color of the sky is due to scattering of sunlight due to dust particles.This is called Rayliegh effect.If you were in space or moon the sky would look totally black.So if you look at the sky you are actualy viewing the scattered light which hasn't much effect on your eyes.

Answer 4

Because the Sun is far more dense and luminant than the sky. You can only see the surface of the Sun, whereas you can see all parts of the sky.


Doug

Answer 5

Because the sun hurts your eyes.

There are far too many light rays for your eyes to be able to function with coming from the sun. It is similar to standing in a warm room and then walking over to the stove and sitting right next to it.

Answer 6

There is no reason why you can't look into the sun. If you do it too much you will go blind but you can still do it.