The Cas□ini spacecr□ft □as sent on□its way to□Sat□□n in 1□97□ Since th□n, she has□t□□velle□ nea□ly four billion kilom□ters□ d□l□ve□ed a p□o□e to□a t□xi□□moon, □iscov□re□ ph□nta□mag□rical □tructur□s on th□ pl□net□;s icy □□ngs,□s□udie□□the s□artling □tm□□p□e□e on□a tiny moon. Now,□on a daring spiral□orbit, C□ssini □il□ □treak toward □atu□n itself□□□t□eam□ng data to □□□th before being tor□ apart.