Friday, June 27, 2008

Twinkle twinkle little star

Stars seems to twinkle because we see them through the layers of earth’s atmosphere. As light passes through these layers, it is distorted so that the amount wee actually see changes constantly. Stars do not twinkle when viewed from space, which is why telescope in space, such as hubble, give the best possible view of the distant stars and galaxies.

The reason why Planets do not twinkle is that planets are nearer to us and appear to be bigger in size, thus they are considered as expanded sources of light rather than point sources of light as in case of stars. Or planets are also considered as a collection of many point sized sources of energy. So the total amount of twinkling effect in a planet averages out to be zero.


Krish said...


Anonymous said...

yeah quiet scientific!!

but good

ILL[EAGLE] said...

And for clarifying this situation one can take the example of obstruction of stars due to clouds of night