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There are thousands of satellites in Earth's orbit, with estimates ranging from 2,200 to over 3,000 active satellites. Additionally, there are many more inactive or defunct satellites and debris in orbit.
yes
2465 artificial satellites orbiting the Earth
1000, Min
As of 2021, there are around 80 countries with active satellites in orbit around Earth. These satellites serve various purposes including communication, weather monitoring, Earth observation, and scientific research.
There are hundreds. If that seems like "many" to you, then the answer is 'yes'.
With large number of low-earth-orbit satellites and the geo-synchronous orbit stuffed full of communications satellites, there aren't all THAT many "medium" altitude satellites. But there are some. The GPS navigation satellites, for example, are in highly inclined 12-hour orbits, and an unknown number of military "spy" satellites are in that middle range.
Thousands, but the actual number is classified and varies from week to week as satellites de-orbit and new ones are launched.
At present there are around 24-32 satellites orbiting in medium earth orbit(11,000 miles)more the satellites more accurate navigation is produced.
Satellites are typically positioned around 22,236 miles above the Earth in a geostationary orbit.
Satellites cannot orbit the US; they orbit the Earth, and there are several thousand of them.
No, all satellites do not orbit Earth at the same altitude. An good overview of this can be found on http://www.idirect.net/Company/Satellite-Basics/How-Satellite-Works.aspx. This overview reviews Low Earth Orbit, Medium Earth Orbit and Geostationary Orbits.