Canadian small ionospheric observatory instrumented with an ionospheric sounder, a VLF receiver, an energetic particle detector, and a cosmic noise experiment. September 29, 1962 at 06:05 UTC · Launch Successful Thor DM-21 Agena-B — United States Air Force, to Low Earth Orbit Space Launch Complex 2E, Vandenberg SFB, CA, USA The world's 199th orbital launch attempt, and 57th of 1962. Data: Launch Library 2, The Space Devs. Image by USAF via The Space Devs.