Posts Tagged: Saturn’s Rings

Cassini starts its grand finale


Toting an ultraviolet instrument designed and built by LASP, NASA’s Cassini spacecraft made the first of 22 dives between the rings of Saturn and the gaseous planet today, the beginning of the end for one of NASA’s most successful missions ever.

Launched in 1997 and pulling up at Saturn in 2004 for the first of hundreds of orbits through the Jovian system, the Cassini-Huygens mission has fostered scores of dazzling discoveries. These include in-depth studies that date and even weigh the astonishing rings; the discovery of methane lakes on the icy moon Titan; hot water plumes found squirting from the moon Enceladus; and closeup views of the bright auroras at the planet’s poles.

Evidence for a primordial origin of Saturn’s rings

Press Release for 2007 DPS Meeting Saturn’s rings may be more massive than previously thought. Both Cassini observations and theoretical simulations of Saturn’s rings point towards extensive particle clumping in Saturn’s rings. Our simulations of the rings show that the surface density of particles can be substantially larger than one would infer from a uniform… Read more »