Thursday, October 07, 2010

Saturn’s Rings Formed from Large Moon’s Destruction?

Saturn’s Rings Formed from Large Moon’s Destruction.

"Canup’s new alternative theory is that Titan-sized moon with a rocky core and an icy mantle spiraled into Saturn early in solar system history. Tidal forces ripped off part of the icy mantle, distributing it into what would become the rings. But the rocky core was made of more durable material that held together until it hit Saturn’s surface. ‘The end result is a pure ice ring,’ Canup said in an article in Nature.

Over time the ring spreads out and its mass decreases, and icy moons are created. Due to changes in the evolving Saturn system, these ‘spawned’ moons then spiraled outward rather than inward. In this way, ice rings and ice-enhanced inner moons originate as a primordial byproduct of the same process that produces Saturn’s regular satellite system, making the whole process simpler than if there were several events."

And on a similar note, Cassini Catches Saturn Moons in Paintball Fight. "Scientists using data from NASA’s Cassini spacecraft have learned that distinctive, colorful bands and splotches embellish the surfaces of Saturn’s inner, mid-size moons. The reddish and bluish hues on the icy surfaces of Mimas, Enceladus, Tethys, Dione and Rhea appear to be the aftermath of bombardments large and small."

No comments: