Never-before-seen Images From Saturn Kick Off Celebrations at Royal Observatory Greenwich in London

In anticipation of the upcoming equinox at Saturn, the imaging science team on NASA's Cassini spacecraft is releasing today a series of images and movies capturing scenes possible only once every 15 years.This bounty of sights, that includes time-lapse sequences in which Saturnian moons eclipse each other and cast long shadows onto the planet's famous rings, represents only some of the fruits