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A satellite constellation is a group of artificial satellites working together as a system. Unlike a single satellite, a constellation can provide permanent global or near-global coverage, such that at any time everywhere on Earth at least one satellite is visible. Satellites are typically placed in sets of complementary orbital planes and ...
Galileo. Galileo is a global navigation satellite system (GNSS) created by the European Union through the European Space Agency (ESA) and operated by the European Union Agency for the Space Programme (EUSPA). [6] It is headquartered in Prague, Czechia, [7] with two ground operations centres in Oberpfaffenhofen, Germany (mostly responsible for ...
Status. Active since 2019 ; 5 years ago(2019) Starlink is a satellite internet constellation operated by Starlink Services, LLC, a wholly owned subsidiary of American aerospace company SpaceX, [ 3 ] providing coverage to over 100 countries and territories. It also aims to provide global mobile broadband.
Amazon. Website. Official website. Kuiper Systems LLC, also known as Project Kuiper, is a subsidiary of Amazon that was established in 2019 to deploy a large satellite internet constellation to provide low- latency broadband connectivity. [2][3] The name Kuiper was a company codename for the project inspired by the Kuiper belt.
A celestial map by the Dutch cartographer Frederik de Wit, 1670. A star chart is a celestial map of the night sky with astronomical objects laid out on a grid system. They are used to identify and locate constellations, stars, nebulae, galaxies, and planets. [ 1 ] They have been used for human navigation since time immemorial. [ 2 ]
The Iridium satellite constellation was conceived in the early 1990s as a way to reach high Earth latitudes with reliable satellite communication services. [ 9 ] Early calculations showed that 77 satellites would be needed, hence the name Iridium, after the metal with atomic number 77.
Similar to NASA's GOES satellites. The International Space Station (ISS) has long been used as a central satellite platform for other sensors, including Earth observation sensors. For example: LIS, SAGE III, TSIS-I, ECOSTRESS, GEDI, OCO-3, Diwata-1, and HICO. Radar altimeter used to monitor ocean surface height.
It is one of the 48 constellations described by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is a mid-sized constellation ranking 39th in overall size, with an area of 441 square degrees (1.1% of the celestial sphere). Aries has represented a ram since late Babylonian times.
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