images of earth taken from space
the atmosphere of earth looks transparent
but when we see the sky from the earth surface
especially in the day time
then the sky looks blue
as you can see behind me
so what's the reason behind this phenomenon
light rays coming from our  sun
they are white in colour
then why the sky looks blue?
the reason behind this
before knowing that first, we have to understand
that white like comprise of what things?
actually, white light is made up of all colour of light which we see in a rainbow
when this light passes through a prism
the because of refraction we see all the colours in it
when light doesn't get hit by anything
moving along a straight path
but when any kind of disturbance comes in its way
the three phenomena occur reflection, refraction and scattering
we see the blue sky because of this scattering of light
different kinds of light waves have different kinds of wavelength
among the red light have the longest wavelength
and blue light has shorter wavelengths
just because of blue light have a short wavelength
even a smallest particles in the 
 atmosphere scatters it
on the other hand, because of red light have a larger wavelength
it scatters very less because of particles in the  atmosphere
and this blue light gets scattered from most of all particles from the atmosphere
and they scatter blue light that much we can see blue colour in the  sky
and we can't see any other colour in the 
 sky
this was all why sky looks blue in colour
but sometimes it looks red or yellow as well
the sky looks red or yellow in  due timing
the reason is that
during the due time when light reaches us
at that time it has to travel a long path  in the atmosphere
because it has to travel through so long path most of blue light gets scattered behind
and only the red light reaches us because it left
just because red or yellow light scatters least
that's why  in the evening time the sky looks red or yellow
stay with endiae genius thank you
