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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 successful large-scale simulation of the evolution of galaxies, with results consistent with what is actually seen by astronomers in the night sky, provides evidence that the theoretical underpinnings of the models employed, i.e., the supercomputer implementations ΛCDM, are sound bases for understanding galactic dynamics and the history of the universe, and opens avenues to further research.
Astrosat-1000 is the largest option in EADS Astrium's Astrosat family of satellite buses. Astrosat-1000 provides the basic structure for building satellites between 800 and 1200 kg in mass. It is the satellite bus used for the Pléiades-HR series of satellites. [1] [2] [3]
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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.
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions and distances of celestial objects on the sky. [3]
The term Pleiades Phenomenon was coined by astronomer Paul Kalas who discovered five nebulosities not related to star forming regions using a coronagraph. [2] The nebulosities were found to have "linear, filamentary, striated morphological structure" located between 1000 and 100,000 astronomical units from each star.