Artificial satellites now number in their hundreds of thousands in orbit around Earth
There are several accepted"zones" of orbits around the Earth. One is called low-Earth-orbit, which extends from about 160 to 2,000 km . This is the zone where the ISS orbits and where the space shuttle used to do its work. In fact, all human missions except for the Apollo flights to the moon took place in this zone. Most satellites also work in this zone.is the best spot for communications satellites to use, however.
Three small CubeSats float above the Earth after deployment from the International Space Station. Astronaut Rick Mastracchio tweeted the photo from the station on Nov. 19, 2013.half-million artificial objects in Earth orbit today Space agencies have to consider orbital trajectories carefully when launching something into space. Agencies such as the United States Space Surveillance Network keep an eye on orbital debris from the ground, and alert NASA and other entities if an errant piece is in danger of hitting something vital. This means that from time to time, the ISS needs to performCollisions still occur, however.
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