
In late 1957, teams at JPL worked on the complex pieces required to build the Explorer 1 satellite. Here, Explorer…

A model of Explorer 1, held by JPL's Director William Pickering, scientist James Van Allen and rocket pioneer Wernher von…

Through the combined efforts of JPL and the Army Ballistic Missile Ballistic Agency, Explorer 1 launched from Cape Canaveral, Fla.,…

Dr. Wernher von Braun explains the Saturn Launch System to President John F. Kennedy. NASA Deputy Administrator Robert Seamans is…

Explorer 1 was the first U.S. satellite and the first satellite to carry science instruments. The satellite was launched on…

APOD Science APOD APOD: 2007 December 18 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss …

Space-- it seems--can get rather competitive.

APOD Science APOD APOD: 2007 December 17 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss …

APOD Science APOD APOD: 2007 December 16 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss …

APOD Science APOD APOD: 2007 December 15 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss …