Scientists examining data from the Cassini-Huygens mission have identified an unexpected feature in the structure of Saturn's protective magnetic bubble. Cassini was designed to investigate Saturn and the wider Saturn system, including its rings, natural satellites and surrounding space environment. Researchers analyzed Cassini observations gathered between 2004 and 2010 to determine exactly where Saturn's magnetospheric cusp is located. The fact that Saturn's cusp is displaced toward dusk provides evidence that a planet's rotation rate can fundamentally reshape its nearby space environment. These forces help explain why Saturn's cusp appears much farther toward the afternoon and evening than the equivalent region at Earth.