Question

why is it not possible to see the stars in the day light?
please tell

Answer 1

In the day the stars are still there, but you cannot see them because they are so much fainter than the sunlight that is scattered by our atmosphere. If the Earth had no atmosphere, then our daytime sky would be black like at night, except the sun would be a huge spotlight shining down at us.

Answer 2

Stars do glow during the day, but we can't see them because of the glare of sunlight. When the sun is up, the blue color in sunlight gets scattered all over the atmosphere, turning the sky the familiar bright blue color. This blue light is much brighter than the faint light coming from the stars, so it prevents us from seeing them.

If you were standing on the Moon, for instance, where there is no atmosphere, you would see the stars both day and night.