Mission Press ReleasesNASA'S Swift Narrows Down Origin of Important Supernova Class NASA HQ - Tuesday, March 20, 2012 Posted on: 3/21/2012 2:33:48 AM PDTSwarm: magnetic field satellites get their bearings European Space Agency - Monday, November 7, 2011 Posted on: 11/7/2011 4:43:54 PM PDT | No Mission Status Releases |