Sputnik

Sputnik 1 orbited the earth for 57 days before the gravity of earth pulled it from space Sputnik was an experiment to show that artificial satelites could be made.Today thousands of srtificial satellites orbit the earth the natural satellite completes one orbit a month.Present day communications satellites transmit radio and television programs to locations around the world.Sputnik was an unmanned Soviet satellite that orbited the earth on 4 October 1957. The kerosene-powered Sputnik weighed 84 kb (184 pounds), travelled at over 28,000 kilometers per hour (17,000 miles per hour) and contin…