Ultima Thule
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Mostly junk, USA and Russia were launching satellite since 1957 so space have mostly Space junk different stages of rockets failed satellites etc and only geostationary satellites may be drift away to space medium and low orbit satellites always burn through to atmosphere,higher satellites (medium orbit)satellites take more time. (Years to decades) to enter the atmosphere, and GPS HAS ONLY 24-30 SATELLITES NOT YOUR 45, and by the way may i ask you in which satellite company you worked with @T|/|TThere are thousands of satellites in general in different orbits. I have worked with a satellite company and the amount of satellites is really huge. There are satellites as small as 10cm by 10cm. Usually capability of a satellite is never openly disclosed. Vague terms like earth observation satellites is used.
In LEO orbits, there are no dead satellites. A satellite to remain in orbit requires gas boosters. Once the fuel runs out, it either falls into earth and burns in atmosphere or is tossed into unstable orbits n is lost in space. Dead satellites in any orbit cannot stay its course for long and eventually falls into earth or is slinged into space. All satellites have an expiry date and that is because of the limited fuel it can carry. Modern satellites are designed to safely fall into earth over Pacific ocean after expiry. This can be anything from one week to 10 years, depending on fuel it carries. The GPS network alone have around 45 satellites in low and medium earth orbits. It is designed in a way that atleast two satellites are always over head at any given location.
Can you refer some of these launch/years/dates @T|/|TAlready spy satellites in geostationary orbits
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