Transcription: This is the sound of Sputnik 1, the first man-made satellite placed in orbit by the Soviet Union on October 4, 1957. Four months later, the U.S. was finally able to launch its first satellite, Explorer 1, shown here with Pickering, Van Allen and Wernher von Braun.
(.mp3)
.iso/spaceage/demo/explorer.bmp){kind=link}
.iso/spaceage/demo/future1.bmp){kind=link}