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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.
(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]
Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 22 January 2025, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 are in reserve or testing, 43 are retired, 2 were lost during launch, and 1 prototype was never launched. 3 Block III satellites have completed ...
Researchers have long warned about the impact of satellites in our view from the ground – but it is affecting the view in space, too
A trail of Starlink satellites appears in the night sky five days after its launch. ... The number of satellites in Earth's orbit has skyrocketed from about 1,000 in 2010 to more than 10,000 today.
NBC News pioneered the morning news program when it launched TODAY in 1952 with Dave Garroway as host. Now, over 70 years later, the TODAY broadcast features a team of familiar faces.
A satellite in a geostationary orbit appears stationary, always at the same point in the sky, to ground observers. Popularly or loosely, the term "geosynchronous" may be used to mean geostationary. [1] Specifically, geosynchronous Earth orbit (GEO) may be a synonym for geosynchronous equatorial orbit, [2] or geostationary Earth orbit. [3]
Pages in category "Satellites orbiting Earth" The following 161 pages are in this category, out of 161 total. This list may not reflect recent changes. A. ACRIMSAT;