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HST |
Also found in: Dictionary/thesaurus, Acronyms, Wikipedia, Hutchinson | 0.11 sec. |
Hubble Space Telescope (HST)Most sophisticated optical observatory ever placed into orbit around Earth. Because it is above Earth's obscuring atmosphere, it can obtain images much brighter, clearer, and more detailed than ground-based telescopes can. Named for Edwin Hubble, it was built under NASA supervision and deployed on a 1990 space-shuttle mission. The reflector telescope's mirror optics gather light from celestial objects and direct it to an array of cameras and spectrographs (see spectroscopy). A defect in the primary mirror initially caused it to produce fuzzy images; in 1993 another shuttle mission corrected this and other problems. Subsequent missions to the HST have been for maintenance, repairs, and instrument upgrades. HST(1) See Hubble Space Telescope. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Part of the economy series, the 2815 HST, 3215 HST and the 3215 four-wheel drive get chores done quickly with three-cylinder, four-stroke, indirect injection, water-cooled diesel engines. Lott, HST head team leader, and native of Mobile, Ala. Despite its tremendous success for almost two decades, the HST ground support system experienced down-to-earth problems--namely budgetary ones--prior to the turn of the 21 st century. |
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