Friday, October 16, 2009

Tiny Moon Feeds Largest Ring Around Saturn

This artist's illustration shows a nearly invisible ring around Saturn – the largest of the giant planet's many rings. It was discovered by NASA's Spitzer Space Telescope. Credit: NASA/JPL-Caltech/Keck

From The Cosmos:

PARIS: Stunned astronomers have discovered a new mega-ring around Saturn and believe its genesis is a small, distant moon.

Phoebe, a Saturnian satellite measuring only 214 km across, probably provides the record-breaking tenuous circle of dusty and icy debris, they report today in the British journal Nature.

The largest ring identified so far in the Solar System, the circle starts about six million km from Saturn and extends outwardly by another 12 million km, within the orbit of Phoebe.

Read more ....

No comments: