Put a Ring on It! Saturn Impresses in Stunning Valentine's Day Photos

NASA's Cassini spacecraft sends its love this Valentine's Day with photos of Saturn's beautiful rings, moons and polar vortex. The Cassini-Huygens mission — a joint collaboration led by NASA, the European Space Agency and the Italian Space Agency — launched in 1997 and is in its final year in orbit around Saturn. Throughout its stay at the ringed planet, Cassini has captured extraordinary photos that are published in an image gallery online.