This image is a cutaway illustration of the Explorer I satellite with callouts. The Explorer I satellite was America's first scientific satellite launched aboard the Jupiter C launch vehicle on January 31, 1958. The Explorer I carried the radiation detection experiment designed by Dr. James Van Allen and discovered the Van Allen Radiation Belt.
NASA last week launched a new interactive Web site, jointly developed with the non-profit Internet Archive, which is a single online resource featuring enhanced search, visual, and metadata capabilities. The portal stores more than 140,000 digitized high-resolution NASA photographs, audio, and film clips. Web 2.0 elements are scheduled to follow this initial launch.