Then there is the question of perception. If I was telepathic and saw through the eyes of another person, would their red and green be the same as my red and green. Do our brains assign the same colour to the different wavelengths of light. How would I ever know?
What crashed into Jupiter, I remember shoemaker levey 9 smashed into Jupiter, was there anything bigger in the past, like a planet? Perhaps a planet smashed into Jupiter. Of we had more planets but some of them cascaded into the sun because their orbit was disturbed.
How big is the universe, is it finite, or never ending. If it is finite, what happens when your leave the universe?