Mineral inclusions in certain meteorites have been dated to about 4.567 billion years old, making them the oldest solids in the solar system. They formed before Earth, before the planets had even come together. Holding one of these stones means touching the very first solid grains that formed around the young Sun.
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.