Abstract:NASA's Spitzer Space Telescope finally ceased all science operations after more than 16 years'operation, with 5 times of mission extensions. Significant discoveries were made in many fields, such as studying the universe in the infrared light, revealing new wonders in our solar system, our galaxy, and beyond, as well as detecting exoplanets and characterizing their atmospheres. More than 9000 scientific papers were published based on its scientific data. A novel Earth-trailing heliocentric orbit was chosen, with the then state-of-the-art, large-format infrared detector arrays in the design of the Spitzer. The mission adjusted its scientific objectives as soon as the exoplanets became a new hot spot of the space astronomy observation after its launch. Scientific observations were made for another 10 years after its cryogenic main mission with the only one payload left among the three focal plane scientific instruments aboard, i.e. the two shortest wavelength bands, at 3.6 and 4.5 microns of the 4 channel infrared array camera. For a sustainable progress of China's space science missions, it is beneficial to learn from the Spitzer mission's practices such as the open technology innovation, the adjustment of the scientific goal with the times, and the collaborative integrated observation with other ground or space astronomical telescopes.
[1] Wu J, Bonnet R. Maximize the impacts of space science[J]. Nature, 2007(551):435-436.
[2] Werner M W, Roellig T L, Low F J, et al. The SPITZER space telescope mission[J]. The Astrophysical Supplement Series, 2004, 154:1-9.
[3] Spitzer mission overview[EB/OL].[2020-02-15]. https://www.jpl.nasa.gov/news/press_kits/spitzer/.
[4] Spitzer science[EB/OL].[2020-02-15]. https://www.jpl.nasa.gov/news/press_kits/spitzer/science/.
[5] National Research Council. Strategy for space astronomy and astrophysics for the 1980's[M]. Washington D C:The National Academies Press, 1979.
[6] Davies J K, Green S F, Stewart B C, et al. The IRAS fastmoving object search[J]. Nature, 1984(309):315-319.
[7] Fazio G G. Small helium-cooled infrared telescope experiment for Spacelab-2[R]. MA Cambridge:The Smithsonian Astrophysical Observatory, 1990.
[8] Kwok J H, Garcia M D, Bonfiglio E, et al. Spitzer Space Telescope mission design[C]//Proceedings of SPIE. United Kingdom:Glasgow, SPIE, 2004(5487):201-210.
[9] Werner M W. The Spitzer Space Telescope[J]. Optical Engineering, 2012, 51(1):011008.
[10] Gehrz R D, Roellig T L, Werner M W, et al. The NASA Spitzer Space Telescope[J]. Review of Scientific Instrument, 2008, 78:011302.
[11] Fazio G G, Hora J L, Allen L E, et al. The Infrared Array Camera (IRAC) for the Spitzer Space Telescope[J]. The Astrophysical Journal Supplement Series, 2004(154):10-17.
[12] Bryden G, Beichman C A, Rieke G H, et al. Spitzer/MIPS limits on asteroidal dust in the pulsar planetary system PSR B1257+12b[J]. The Astrophysical Journal, 2006(646):1038-1042.
[13] Mayor M, Queloz D. A Jupiter-mass companion to a solar-type star[J]. Nature, 1995(378):355-359.
[14] Hatzes A P. The role of space telescopes in the characterization of transiting exoplanets[J]. Nature, 2014(513):353-357.
[15] Lissauer J J, Dawson R I, Tremaine S. Advances in exoplanet science from Kepler[J]. Nature, 2014(513):336-344.
[16] Swain M R, Deroo P, Griffith C A, et al. A groundbased near-infrared emission spectrum of the exoplanet HD 189733b[J]. Nature, 2010(463):637-639.
[17] Yee J C, Fazio G G, Benjamin R, et al. The science case for an extended Spitzer mission[R]. MA Cambridge:the Smithsonian Astrophysical Observatory, 2017.
[18] Lowrance P J, Ingalls J G, Krick J E, et al. Spitzer Space Telescope:Innovations and optimizations in the extended mission Era[C]//15th International Conference on Space Operations, France, Marseille:The American Institute of Aeronautics and Astronautics, Inc., 2018:516-528.
[19] Verbiscer A J, Skrutskie M F, Hamilton D P. Saturn's largest ring[J]. Nature, 2009(461):1098-1100.
[20] Gillon M, Triaud A, Demory B, et al. Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1[J]. Nature, 2017(542):456-460.
[21] Lisse C M, VanCleve J, Adams A C, et al. Spitzer spectral observations of the deep impact ejecta[J]. Science, 2006, 313(5787):635-640.
[22] Map of Exoplanets Found in Our Galaxy[EB/OL]. (2015-04-14)[2020-02-16]. http://www.spitzer.caltech.edu/images/6053-sig15-006.
[23] May C. Back to the beginning[J]. Nature Physics, 2017, 12:287.
[24] Spitzer Bibliographical Database[EB/OL].[2020-02-15]. http://sohelp2.ipac.caltech.edu/bibsearch/.
[25] Spitzer steps aside[J]. Nature Astronomy, 2020(4):293.
[26] Yin J, Cao Y, Li Y H, et al. Satellite-based entanglement distribution over 1200 kilometers[J]. Science, 2017, 356(6343):1140-1144.
[27] Dampe C, An Q, Asfandiyarov R, et al. Measurement of the cosmic ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite[J]. Science Advances, 2019, 5(9):3793.
[28] Wu W W, Li Ch Li, Zuo W, et al. Lunar farside to be explored by Chang'e-4[J]. Nature Geoscience, 2019, 12:222-223.
[29] 吴季. 空间科学任务的全价值链管理和产出评估[J]. 中国科学院院刊, 2019, 34(2):206-213.
[30] 邓劲松. 红外天文小卫星深化论证[R]. 北京:上海微小卫星工程中心, 2016.
[31] 李佳席, 邓劲松, 许春, 等. 红外空间天文发展[J]. 天文学进展, 2016, 34(3):327-340.