31. NASA provides real-time tracking of the over 500 artificial satellites maintained in orbit around Earth. 32. On 24 April 1970 CAST successfully launched China's first artificial satellite Dong Fang Hong I. 33. Oct . 4, 1957 _ Soviet Union launches Sputnik, the world's first artificial satellite . 34. The first artificial satellite used solely to further advances in global communications was a balloon named Echo 1. 35. A "'satellite constellation "'is a group of artificial satellites working in concert. 36. Ten years after oil, artificial satellites burn up in the atmosphere as parts are not being replaced. 37. Our scientists and technicians have succeeded in the first artificial satellite aboard a multi-stage rocket into orbit, 38. However, orbiters such as the Space Shuttle and many artificial satellites appear to move from west to east. 39. It allows crew members to contact starships in orbit without relying on an artificial satellite to relay the signal. 40. The first artificial satellite of the Moon was the Soviet probe Luna 10, launched March 31, 1966.
