Why is the sky not red?

Question

Riddle me that, Batman.

Answer 1

Hi. If you were standing on the Moon during the eclipse you would see that it is. So the Joker says 'Lunatics see red'.

Answer 2

The intensity of the blue light in the sky in day time is more blue in the horizonal direction than in the vertical.This is due to a phenomenon called fluorescence.
At sun set the sky turns to a bright red on the horizontal. This is due to a phenomenon called diffraction which is the spliting of the frequencies of light.

Answer 3

Blue light gets scattered more, so you see blue light coming from all directions.