Question

why sky appears black on night?

Answer 1

HEYA MATE,

HERE IS UR ANSWER.

Thanks for asking this question.

The reason the night sky isn’t just a blaze of light is because the universe isn’t infinite and static. If it were, if the stars went on forever, and if they had been there forever in time, we would see a bright night sky. The fact that we don’t tells us something very fundamental about the universe we live in.

A limit to the universe may seem a natural explanation – if you were in a forest and you could see a gap in the trees, for example, you might surmise that you were near the edge. But it’s dark on all sides of us, which would mean not just that the universe is bounded, but that we’re in the middle of it, which is pretty implausible.

Alternatively, the universe could be limited in time, meaning that light from far-away stars hasn’t had time to reach us yet.

I HOPE IT HELPS U.

Answer 2

because there is no atmosphere due to which no scattering of light. hence sky appers black at night time.