What makes the sky blue?

Answer 1

For the same reason it depends on the planets atmosphere has in it .

example: out planet is bluish green from outerspace because of the Oxygen / nitrogen / and CO2 . below are some examples:

When the sun light bounces off the moecules, they refelct the blue light of the spectrum of light.

http://science.nasa.gov/headlines/y2001/ast27nov_1.htm

http://zebu.uoregon.edu/~js/ast221/lectures/lec14.html

http://www.astronomynotes.com/solarsys/s3.htm

Answer 2

Probably been asked and answered loads of times but it is blue because the air scatters blue light more than it scatters red. This means that if you are looking across a beam of light (I.E. looking anywhere apart from directly at the sun) you will see more blue than red light.
If you are looking directly at the sun when it is low on the horizon and dim it will look red because most of the blue light has been scattered away.
The planet looks blue from space for exactly the same reason. Someone is bound to say is is reflections from the sea but this is backwards, the sea is blue because it is reflecting the sky. You can tell this is the case because the sea looks grey when it is cloudy.
A good experiment is shining a torch beam through a fish tank of water with a tiny amount of milk mixed in. The beam looks blue from the side and red if looking back along the beam.

Answer 3

I was always told that it was because the sea is blue and that the sky is reflecting it. But what about in the middle of continents - I believe the sky's still blue?

I think that it is to do with the refraction (splitting up) of the sun's light. Blue and violet light are bent the most so that light is what is left up there. I guess we can see it because of it reflecting off particles such as water up there. The same thing happens at sunrise and sunset except that the violet/blue light is refracted towards the ground and the red light stays up there because of the different angle that the sun's rays are approaching at.

Answer 4

its very simple . the air in the atmosphere act like a mirror to us . as we know that 3/4th surface of the earth is covered with water and oceans therefore the sky reflects the blue colour of the blue water under it. GOT IT?if not reach me at [e-mail]

Answer 5

There are different wavelenghts in light. Blue having short wavelenght, red having a long one. When sunlight hits the atmosphere most get through and blue waves reflects.

Btw. a simple google search could've answered this

Answer 6

Red and Yellow light is used in sunsets so the sky is blue. It is the leftover colour.

Answer 7

well there is space and with the sun it makes it look like a light blue

Answer 8

light reflected of the atmosphere appears blue most of the time but is sometimes red

Answer 9

Its how the light reflects so we see it as blue.

Answer 10

light is reflected of water vapor and toxins like CO2 and Argon and it gives off a bright blue hue (lol! that rhymes!).