Cassini's Grand Finale
20 years ago, the Cassini spacecraft left Earth on a journey to Saturn. The probe has explored Saturn's icy moons, sending back evidence of the building blocks for life and diving between the planet and its famous rings. But now, Cassini's mission is almost over. It's running out of fuel, and to protect the purity of Saturn's moons, Cassini will plunge into Saturn's atmosphere and burn itself up in a spectacular end to a successful mission.