bn:03590303n
Noun Named Entity
Categories: Great Observatories program, Space telescopes, Hubble Space Telescope, Chandra X-ray Observatory, Spitzer Space Telescope
EN
Great Observatories program  Great Observatories  Great observatory  NASA's Great Observatories
EN
NASA's series of Great Observatories satellites are four large, powerful space-based astronomical telescopes launched between 1990 and 2003. Wikipedia
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EN
NASA's series of Great Observatories satellites are four large, powerful space-based astronomical telescopes launched between 1990 and 2003. Wikipedia