Hubble telescope 30 years in orbit:personal reflections  

作　　者：Robert Williams 

机构地区：[1]Space Telescope Science Institute&University of California/Santa Cruz,CA 95064,USA

出　　处：《Research in Astronomy and Astrophysics》2020年第4期1-6,共6页天文和天体物理学研究（英文版）

摘　　要：With an initial requirement to make observations a minimum of 5–10 years,Hubble Space Telescope(HST)has continued to operate well for 30 years.It has relied upon five servicing missions to repair and replace essential components.Since the final Space Shuttle mission 10 years ago,it has avoided major breaks in its operation,with the only serious effects of aging in space being a progressive deterioration in the performance of the gyroscopes and sensitivity of the instrument detectors.A number of factors were important in making HST a scientific landmark.Ground-breaking discoveries have been made with HST-the most important being the discovery of cosmic acceleration.When HST operation ceases,future observations in space should be assured with successful operation of major missions now planned by NASA,ESA,and the Chinese and Japanese Space Agencies.

关 键 词：HST COSMIC acceleration HUBBLE constant SUPERNOVAE 

分 类 号：P111.2[天文地球—天文学] V467[航空宇航科学与技术—航空宇航制造工程]