Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. NASA Says Bus-Size Asteroid Narrowly Missed Earth Thursday VOA News Scientists at the U.S. space agency NASA say a small asteroid -- roughly the size of a bus -- passed close to Earth on Thursday, flying just 22,000 kilometers above the surface, within the orbit of geostationary satellites that ring the planet. While the proximity to Earth might raise alarm, scientists at NASA's Jet Propulsion Laboratory (JPL) in Southern California said even if the asteroid had entered the earth's atmosphere, it almost certainly would have broken up and become a bright meteor. The asteroid, known as 2020 SW, is about five to ten meters wide and was first discovered on September 18 by the NASA-funded Catalina Sky Survey in Arizona. .