University of Virginia, College and Graduate School of Arts and Sciences

The true extent of Saturn's outermost ring

June 10, 2015

Professors Anne Verbiscer and Michael Skrutskie are co-authors on the recent Nature paper announcing the discovery of the true extent of Saturn's outermost ring. Prof. Verbiscer and Prof. Skrutskie discovered this ring, the so-called Pheobe ring, in 2009 using the Spitzer Space Telescope. In the Nature article published earlier this month, they used data from the NASA Wide-field Infrared Space Explorer to find that the Pheobe ring extends out to a remarkable distance of 270 Saturn-radii from Saturn, making it the largest known planetary ring in the Solar System.