Through a solar telescope, the Sun is covered in small bright cells with dark edges called granules. Each one is a bubble of hot gas that rises, cools at the surface, then sinks again, just like boiling water. These small granules are still around 1,000 km wide, and each lasts only about ten minutes before being replaced.
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.