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Earth observation satellite missions developed by the ESA as of 2019. Earth observation satellites are Earth-orbiting spacecraft with sensors used to collect imagery and measurements of the surface of the earth. These satellites are used to monitor short-term weather, long-term climate change, natural disasters.
PROBA-1 Small satellite to observe the Earth (first Belgian Satellite) 2003 Canada: MOST: Earth: Success: MOST the smallest space telescope in orbit. Turkey: BİLSAT: Earth: Success: BİLSAT, Turkey's first earth observation satellite: 2002 US: CONTOUR: Comet Encke: Failure: CONTOUR launched, but lost during early trajectory insertion. Europe ...
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 which 4,529 belong to the United States (3,996 commercial), 590 belong to China, 174 belong to Russia, and 1,425 belong to other nations. [1]
An Earth observation satellite or Earth remote sensing satellite is a ... more than 150 Earth observation satellites were in ... in bands where there is civil usage ...
Near Earth Object Surveillance Satellite (NEOSSat) CSA, DRDC: 25 Feb 2013 ... There are also Ultra-high-energy cosmic rays from active galactic nuclei, ...
Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 15 August 2023, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 in reserve or testing, 42 are retired, 2 were lost during launch, and 1 prototype was never launched. 4 Block III satellites have completed construction ...
As of 2022, there have been nine LandSat satellites with LandSat 7, 8, and 9 orbiting the Earth. The LandSat program has involved many organisations since its inception, particularly the United States Geological Survey (USGS).
(See Other moons of Earth and Quasi-satellite.) Mars has two known moons, Phobos and Deimos ("fear" and "dread", after attendants of Ares, the Greek god of war, equivalent to the Roman Mars). Searches for more satellites have been unsuccessful, putting the maximum radius of any other satellites at 90 m (100 yd). [4]