how many satellites are around earth?
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How many artificial satellites have been launched and are in orbit around the Earth? There have been about 8000 man made objects launched into space - only a handful left Earth orbit. Some have decayed and reentered. There are about 3000 satellites currently in orbit. Only about 1000 of those are active. But there are other objects, too, such as spent rockets. Some objects have broken apart because of collisions. There are about 20,000 objects in orbit that are 10 cm in diameter, or larger.
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- Jupiter has a large number of satellites. Of these, four are comparable to the Earth's Moon in size; the rest are orders of magnitude smaller.
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Does your country have a satellite orbiting the earth? Now, there are nearly 500,000 objects circling over Earth in various orbits. These include debris, inactive and active satellites. The tiny Sputnik, which means satellite or fellow traveller in Russian, was the first artificial satellite to be launched into Earth's orbit on October 4, 1957, and it changed the course of human history.
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- 1 Low-Earth orbits (LEO) — LEO satellites occupy a region of space from about 111 miles (180 kilometers) to 1,243 miles (2,000 kilometers) above Earth. 2  Satellites moving close to the Earth's surface are ideal for making observations, for military purposes and for collecting weather data. Satellites moving close to the Earth's surface are ideal for making observations, for military purposes and for collecting weather data. 2  Medium-Earth orbits (MEO) — These satellites park in between the low and high flyers, so from about 1,243 miles (2,000 kilometers) to 22,223 miles (36,000 kilometers).
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Satellite Satellite orbits vary greatly, depending on the purpose of the satellite, and are classified in a number of ways. Well-known (overlapping) classes include low Earth orbit, polar orbit, and geostationary orbit. About 6,600 satellites have been launched.
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Is it possible to see satellites reflect bright light for just a few seconds while is directly over head? Original plans called for a constellation or group of 77 satellites, which is also the atomic number of the chemical element Iridium. Currently, there are 66 active satellites in orbit and 6 more as backups. The orbits are polar and 780 km (485 miles) in altitude.
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- Three companies provide the world's satellite radio: XM Satellite Radio and Sirius Satellite Radio for the U.S.; and WorldSpace for Africa, Asia and Europe. XM uses two geostationary satellites and about 800 low-power ground repeaters scattered around cities where tall structures can block the satellites' line of sight [see upper illustration].
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- Geostationary Satellites. There are 2 kinds of manmade satellites in the heavens above: One kind of satellite ORBITS the earth once or twice a day, and the other kind is called a communications satellite and it is PARKED in a STATIONARY position 22,300 miles (35,900 km) above the equator of the STATIONARY earth.
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How many miles, near and far, do satellites orbit the earth from above? So, 165 km is about the lowest reasonable orbit. There are satellites orbiting at many altitudes up to 35,600 km, which is the height for geosynchronous orbits) and there have been satellites orbiting much higher (either for some scientific purpose or some accident).
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Global Positioning System (GPS) The GPS is owned and operated by the U.S. Department of Defense but is available for general use around the world. 21 GPS satellites and three spare satellites are in orbit at 10,600 miles above the Earth. The satellites are spaced so that from any point on Earth, four satellites will be above the horizon.
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- In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as Earth's Moon.he first satellite, Sputnik 1, was put into orbit around Earth and was therefore in geocentric orbit. By far this is the most common type of orbit with approximately 2,465 artificial satellites orbiting the Earth. Geocentric orbits may be further classified by their altitude, inclination and eccentricity.
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- Tens of millions of pieces of debris are currently orbiting Earth at altitudes that pose a danger to satellites and spacecraft. The threats from such debris are predicted to rise 50 percent in the coming decade and quadruple over the next 50 years.
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How many active satellites are in space? Only a very small percentage of other countries' satellites are military in nature. www.ucsusa.org/nuclear_weapons_and_global_security/space_weapons/technical_issues/satellites-types-orbits.html. There are more than 800 active satellites currently in orbit.
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How much miles above Earth are satellites? Meridith is almost right. Geostationary satellites orbit at a 24 hour period around the Earth's equator. The rest are at many elevations, from more than 180 miles to out as far as the moon, and some are beyond that.
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What Can Satellites Do? Weather satellites help us observe the Earth from space to help predict weather patterns. Radio and television satellites beam our favorite songs, movies, and television shows to Earth for us to enjoy. There's even a group of 27 satellites that make up the Global Positioning System .
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- The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense.GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. Each satellite is built to last about 10 years. 2  Replacements are constantly being built and launched into orbit. 3  A GPS satellite weighs approximately 2,000 pounds and is about 17 feet across with the solar panels extended. 4  Transmitter power is only 50 Watts or less.
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Global Positioning Satellites Global Positioning Satellites. In June of 1993 the last of the 24 satellites of the Global Positioning System was placed into orbit, completing a satellite network capable providing position data to locate you anywhere on Earth within 30 meters.
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How Many Man-Made Satellites Are Currently Orbiting Earth? GPS satellites are at 12,400 miles, high enough to be accessible to large swaths of the Earth. Others that need a closer look at Earth are lower. For comparison, the International Space Station is only about 260 miles high, and very few satellites are lower than that.bout 1,100 active satellites, both government and private. Plus there are about 2,600 ones that no longer work. Russia launched the first satellite, Sputnik 1, in 1957. The oldest one still in orbit, which is no longer functioning, was launched in 1958.
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Satellite Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as Earth's Moon. In 1957 the Soviet Union launched the world's first artificial satellite, Sputnik 1. Since then, about 6,600 satellites from more than 40 countries have been launched.
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- The Solar System contains 18 or 19 natural satellites of planets that are large enough for self-gravity to make them round.
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Classroom time: 40 minutes The Global Positioning System (GPS) is a constellation of about 24 artificial satellites. The GPS satellites are uniformly distributed in a total of six orbits such that there are four satellites per orbit.
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How Many Man-Made Satellites Are Currently Orbiting Earth? It depends on their use. Communications satellites relay signals from a fixed spot on the equator, about 22,000 miles up. GPS satellites are at 12,400 miles, high enough to be accessible to large swaths of the Earth. Others that need a closer look at Earth are lower.
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Orbital Objects The skies above Earth are teeming with more than 8,000 manmade objects, large and small. The U.S. Space Surveillance Network uses radar to track more than 13,000 such items that are larger than four inches (ten centimeters).
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How many satellites are in space right now ? A satellite is something that was sent to work in an orbit around the Earth. Space debris is anything that was sent into an orbit around the Earth but that does not do anything useful there, such as bits and pieces of the rockets that brought the satellites and space probes into space.more.. The United States Space Command keeps track of things launched into space. Its web site http://www.spacecom.af.mil/usspace/boxscore.htm says that there are now (on 16 March 1999) 2569 satellites, 89 space probes, and 6145 pieces of debris in space, for a total of 8803 things.