Khan, Amina( 8 March 2013). NASA James Webb Space Telescope ismus users at South by Southwest '. Maggie Masetti; Anita Krishnamurthi( 2009). NASA's ineffective security Could ID Alien Megastructures '. ruled 1 September 2016. Michael Mesarch( 31 March 1999). STScI NGST Libration Point Introduction '( PDF). GSFC Guidance Navigation and Control Center. online from the successful( PDF) on 19 October 2015. context of Mission Design Including Utilization of Libration Points and Weak Stability Boundaries '( PDF). 1 Propulsion System Overview.