The Hoba meteorite in Namibia is a block of iron and nickel weighing around 60 tonnes, the heaviest ever found. Too massive to haul away, it still lies where it was discovered in 1920. Surprisingly, it left no crater: its flat shape probably slowed it down in the atmosphere before it hit the ground.
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.