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Space probes are satellites designed for robotic space exploration outside of Earth, and space stations are in essence crewed satellites. The first artificial satellite launched into the Earth's orbit was the Soviet Union's Sputnik 1, on October 4, 1957. As of December 31, 2022, there are 6,718 operational satellites in the Earth's orbit, of ...
KOMPSAT-3, 3A, and 5: Active KARI: 2012 Korean Multi-purpose Satellite-3, 3A, and 5. Also known as Arirang-3, 3A, and 5. LAGEOS-1 and 2: Active NASA 1976 LAGEOS 1 launched in 1976 and LAGEOS 2 launched in 1992. Used as an orbiting benchmark for geodynamical studies. [18] Landsat-7: Active NASA and USGS 1999
The Iridium telecom satellites orbit at about 780 km (480 mi). Earth observation satellites, also known as remote sensing satellites, including spy satellites and other Earth imaging satellites, use LEO as they are able to see the surface of the Earth more clearly by being closer to it. A majority of artificial satellites are placed in LEO. [15]
Artificial satellites and space probes in the 1970s Year Origin Name Target Status Description 1970 Japan: Ohsumi: Earth: Success: First Japanese satellite. Japan became the fourth nation after the USSR, USA and France to successfully put an artificial satellite into orbit on its own. West Germany: DIAL Earth Success Second German satellite.
This is a list of satellites in geosynchronous orbit (GSO). These satellites are commonly used for communication purposes, such as radio and television networks, back-haul, and direct broadcast. Traditional global navigation systems do not use geosynchronous satellites, but some SBAS navigation satellites do.
A pair of European satellites rocketed into orbit Thursday on the first mission to create artificial solar eclipses through fancy formation flying in space. “We are a very happy science team ...
In the Solar System, all planets, comets, and asteroids are in such orbits, as are many artificial satellites and pieces of space debris. Moons by contrast are not in a heliocentric orbit but rather orbit their parent object. Geocentric orbit: An orbit around the planet Earth, such as that of the Moon or of artificial satellites.
Proba-3 is a first-of-its-kind mission to position spacecraft to within 1 millimetre precision