How many satellites do they orbit on Earth?

satellites are monitored by the United States Surveillance Network (SSN), which monitors each object in orbit over 10 cm (3.937 inches) on average since it was founded in 1957. Throughout its history, SSN watched more than 24,500 cosmic objects orbiting Earth. Most of them got into an unstable orbit and burned during the reentry. SSN also monitors which piece of space junk belongs to which country.

The SSN was established as a result of the opening of Sputnik, the first artificial satellite, the Soviet Union in October 1957. The orbiting orbiting planet at 20,000 mph (32 186.88 km / h), with Sputnik was a red flag that said America not to accept its technological dominance. In the next decade, Bmesi space races between the USSR and the USA ended, ending with Apollo landing in July 1969.

As space technology matures, they wereLaunched satellites for military and commercial purposes. The satellite start price fell to light satellites to several million dollars and several tens of millions for heavy satellites. This has put satellite technology within the reach of many nations and international societies.

Satellites have an operating life between five and 20 years. Since 2008, the former Soviet Union and Russia have had nearly 1,400 satellites in orbit, the US about 1,000, Japan more than 100, China about 80, France over 40, India more than 30, Germany, United Kingdom and Canada 25 and at least ten from Italy, Australia, Indonesia, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Brazil, Sweden, Sweden, Sweden, Sweden, Sweden, Sweden Sweden, Sweden, Sweden, Sweden, SauDia Arabia. SEA launched - consortium of four companies from the United States, Russia, Ukraine and Norway - launched several satellites in international waters every year, although the company applied for bankruptcy in 2009.

The largest artificial satellite, which is currently in orbit around the country, is an international space station. Some satellites called microsats, nanosats or picosat may be up to 10 cm (3,937 inches) and 0.1 kg (£ 0.22) in matter