In 2025, astronomers announced 128 new moons around Saturn in one go, and more followed: by 2026, the confirmed count had passed 290, far ahead of Jupiter. Most are small rocks just a few kilometers across, probably debris from ancient collisions captured by the planet. And the list is likely not finished yet.
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.