Here's what Cassini heard as it made its daring dive between Saturn and its rings

A Simon and Garfunkel song comes to mind—and that has scientists scratching their heads as the spacecraft heads today for a second dive. As the Cassini spacecraft swooped between Saturn and its innermost ring on April 26th, one of its instruments listened for the sounds of its passage through the heretofore unexplored region. What it heard was of great interest to engineers planning for the second dive, and as well as to scientists who study Saturn's rings. The engineers were hoping to h