After20yearsinspace,theU.S.NationalAeronauticsandSpaceAdministration(NASA)'sCassinispacecraftwasrunningoutoffuel.ToprotectmoonsofSaturnthatcouldhaveconditionssu
TheUSspaceagency'sCassinispacecraftwillendits13-yearmissiontoSaturninmid-Septemberbytransmittingdatauntilthefinalmoment,justbeforeitplungesintotheringedplanet's
ScientistshaveurgedcautionafterfindingorganiccompoundsaroundSaturn'smoonEnceladus.EnceladuswasdiscoveredbytheBritishastronomerWilliamHerschelin1789usingwhatwast