In films, spaceships dodge between tightly packed boulders. In reality, asteroids there are typically hundreds of thousands of kilometres apart. The entire belt weighs about 3% as much as the Moon, and Ceres alone accounts for nearly a third of that. Spacecraft cross it without any dodging at all.
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.