Labels:text | screenshot | circle OCR: SPUTNIK 1 ON OCTOBER 4, 1957, the USSR Aluminum satellite body astonished the world by launching the first ever artificial satellite, Sputnik 1. It was a metal sphere the size of a large beach ball with four antennas to send radio signals back to Earth. To announce that it was in space, Sputnik transmitted a beeping sound. The satellite was equipped with instruments to measure the temperature and density Antenna of the top of the atmosphere, and it sent the results down to Earth for 21 days until its batteries ran out. After 96 days in orbit Sputnik 1 fell back into the atmosphere, burning up on reentry. SATELLITE TRAVELER The name Sputnik is the Russian word for SPUTNIK "fellow traveler." SOUNDS SEE FACT NEXT ALSO FILE
