Saturn's rings reach out to about 280,000 km from the planet, yet the main rings are typically only around 10 metres thick. Proportionally, that's thousands of times thinner than a sheet of paper. They're made of billions of chunks of ice, from dust grains to blocks the size of a house.
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.