Explorer 1 First U.S. Satellite

Explorer 1 (animation 2)

				Now Playing Explorer 1 (animation 2) This animation shows Explorer 1 in orbit around Earth. Launched in 1958, Explorer 1 was the first U.S. Earth-orbiting satellite and the first to return scientific data from space. Download options Quicktime 2Mb \| Screen size: 480x360: + Animation High Definition (HD) 10Mb \| Screen size: 1280x720: + Animation MP4 4Mb \| Screen size: 640x360: + Animation