The hydrogen in your body dates back to the Big Bang, but your oxygen, carbon, nitrogen and calcium were forged inside stars that died long ago. Those elements make up about 90% of your mass. When those stars exploded or shed their outer layers, they seeded the cloud that became the Sun, Earth and, eventually, you.
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.