||March 26, 1958.
||Cape Canaveral LC-5.
||June 27, 1958.
||Army Ballistic Missile Agency (ABMA).
||Jet Propulsion Laboratory.
|Is it still in orbit.
||Burnt up on June 27, 1958.
||14.1 kilograms (31 lb).
||http://www.wikiwand.com/en/Explorer_3, http://www.jpl.nasa.gov/missions/details.php?id=5875 and http://www-spof.gsfc.nasa.gov/Education/wexp13.html
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