Van Allen Project Van Allen Project First US Satellite launch. 1958 https://djspooky.com/wp-content/uploads/2016/10/1958-02-03_First_US_Satellite_Launched_512kb.mp4 Earthsong explorer.lib.uiowa.edu www-pw.physics.uiowa.edu/rbsp/ www-pw.physics.uiowa.edu/space-audio/