Air is mostly nitrogen. Nitrogen gas is blue.
There.
Go watch a video of nitrogen gas evaporating from liquid nitrogen ... tell me what colour you see?
Oxygen is blue actually. That only contributes to the sky blueness a little tho.
Go watch a video of nitrogen gas evaporating from liquid nitrogen ... tell me what colour you see?
Oxygen is blue actually. That only contributes to the sky blueness a little tho.