Scientists used oscilloscopes like this one to analyze Sputnik's signals. You can listen to the sound of Sputnik in AU format (110K) or in RealAudio. Credit: NASA History Office t was 500 miles up, traveling at 18, 000 miles an hour, and it circled the globe every 96 minutes. It flew over the U.S. seven times a day. And the sound of its incessant beeping fascinated and disturbed the nation. At ...

Tells how sputnik was a turning point in American History.