On April 19, 2021, the small helicopter Ingenuity made the first powered, controlled flight on another planet. It was a huge feat, because Martian air is about a hundred times thinner than ours, so its blades had to spin at more than 2,400 revolutions per minute. Designed for five test flights, it ended up making 72 over nearly three years.
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.