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The Pleiades (/ ˈ p l iː. ə d iː z, ˈ p l eɪ-, ˈ p l aɪ-/), [8] [9] also known as Seven Sisters and Messier 45 (M45), is an asterism of an open star cluster containing young B-type stars in the northwest of the constellation Taurus.
The RapidEye constellation contains identical multispectral sensors which are equally calibrated. Therefore, an image from one satellite will be equivalent to an image from any of the other four, allowing for a large amount of imagery to be collected (4 million km 2 per day), and daily revisit to an area. Each travel on the same orbital plane ...
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At 65 degrees long and 40 degrees wide, the Winter Football covers almost half of the southern sky.
The Pléiades system was designed under the French-Italian ORFEO Programme (Optical and Radar Federated Earth Observation) between 2001 and 2003. [2]The Pléiades programme was launched in October 2003 with CNES (the French space agency) as the overall system prime contractor and EADS Astrium as the prime contractor for the space segment.
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]
The Southern Cross is an asterism by name, but the whole area is now recognised as the constellation Crux. The main stars are Alpha , Beta , Gamma , Delta , and arguably also Epsilon Crucis . Earlier, Crux was deemed an asterism when Bayer created it in Uranometria (1603) from the stars in the hind legs of Centaurus , decreasing the size of ...
Constellation, the largest operator of U.S. nuclear power plants, said that some of its own projects to develop data centers at power plant sites are being stymied by the lack of clarity.