At the center of the Sun, fusion releases about 280 watts per cubic meter, roughly what an active compost heap produces, and less than your own body. The Sun is dazzling not because each bit of it is especially active, but because its core is enormous, hundreds of thousands of kilometers of slowly fusing matter.
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.