Sunlight takes about 8 minutes and 20 seconds to reach us, so you always see the Sun as it was a little earlier. If the Sun vanished in an instant, nothing would change for those 8 minutes: not the light, and not even its pull, because gravity also travels at the speed of light.
A large share of Earth's water molecules formed in the interstellar cloud that existed before the Sun was even born, more than 4.6 billion years ago. You are literally drinking a cosmic fossil.
By day, the Martian sky looks butterscotch because of fine dust hanging in the air. But at dusk, those same grains scatter blue light forward, creating a bluish glow around the Sun. Rovers have photographed these blue sunsets: the exact reverse of what we see on Earth.