| "If you were to stand on the moon and look at the sun, the sky would be black like in a darkness of a cave, and the white would appear white, not yellow. Light is not visible light unless it enteracts with something"
As I said, light may change color after hitting the atmosphere, but it is definetely visible before that. I remember reading that outside the atmosphere, despite the lack of interference, space looks more empty. That is because the earth's gravity pulls the light coming at it and compresses it, making space look more busy.
Here's the key part tho, when your standing on the moon, space looks mostly black with few stars because all the light from those stars is spread out all across space instead of being compessed to fit in the night sky. The light is sill visible. UV, X-ray, and infared (the invisible lights) rarely if ever become visible in the atmosphere |