SMACS J0723.3–7327

SMACS J0723.3–7327，通常稱為SMACS 0723，是在南天星座飛魚座內，距離地球40億光年的一個星系團（RA/Dec = 110.8375, −73.4391667）。它是從地球上的南半球可見的一片天空，經常被哈伯太空望遠鏡和其它望遠鏡觀測到，以尋找遙遠的過去。它是詹姆斯·韋伯太空望遠鏡（JWST）拍攝的第一張全彩影像的目標，使用{{link-en|NIR相機|NIRCam]]成像，包括譜密度，顯示了被該星團透鏡化的物體，紅移意味著它們有131億年的歷史。該星系團先前已由哈伯太空望遠鏡（HST）以及普朗克和錢卓，作為南天大質量星團調查（英语：MAssive Cluster Survey）（SMACS）的一部分進行了觀測。 左：HST拍攝的影像（2017年）和右圖：JWST拍攝的圖片（2022年） 在2022年，在SMAC 0723的引力透鏡場中，一些當時最古老的大質量星系團在被稱為"火花星系"的一個透鏡星系中被發現，可能包含第三星族星[來源請求]。 Coe, Dan; Salmon, Brett; Bradač, Maruša. RELICS: Reionization Lensing Cluster Survey. Astrophysical Journal. Oct 2019, 884 (1): 85. Bibcode:2019ApJ...884...85C. S2CID 119041205. arXiv:1903.02002 . doi:10.3847/1538-4357/ab412b.  Overbye, Dennis; Chang, Kenneth; Tankersley, Jim. Biden and NASA Share First Webb Space Telescope Image. The New York Times. 2022-07-11 [2022-07-12]. ISSN 0362-4331. （原始内容存档于2022-07-12） （美国英语）.  PSZ1 G284.97-23.69. SIMBAD. 斯特拉斯堡天文資料中心.  PLCKESZ G284.99-23.70. SIMBAD. 斯特拉斯堡天文資料中心.  SMACS J0723.3-7327. NASA/IPAC Extragalactic Database. [2023-03-07]. （原始内容存档于2022-07-12）.  WRAL. SMACS J0723.3-7327. WRAL.com. 2022-07-10 [2022-07-12]. （原始内容存档于2022-07-12） （英语）.  Astronomers eagerly await first images from the James Webb Space Telescope. CBS News. July 11, 2022 [2022-07-12]. （原始内容存档于2022-09-26） （美国英语）.  SRELICS. irsa.ipac.caltech.edu. [2022-07-12]. （原始内容存档于2022-07-12）.  RELICS: Reionization Lensing Cluster Survey. archive.stsci.edu. [2022-07-12]. （原始内容存档于2018-01-05） （英语）.  Webb's First Deep Field (NIRSpec MSA Emission Spectra). WebbTelescope.org. [14 July 2022]. （原始内容存档于2023-03-07） （英语）.  PSZ1 G284.97-23.69. simbad.u-strasbg.fr. [2022-07-12]. （原始内容存档于2012-09-26）.  CXC-DS. Chandra Data Archive: Search Results. Chandra X-ray Center/SAO. 2015. doi:10.25574/15296.  Repp, A.; Ebeling, H. Science from a glimpse: Hubble SNAPshot observations of massive galaxy clusters. Monthly Notices of the Royal Astronomical Society. Sep 2018, 479 (1): 844–864. Bibcode:2018MNRAS.479..844R. doi:10.1093/mnras/sty1489.  Chow, Denise; Wu, Jiachuan. Photos: How pictures from the Webb telescope compare to Hubble's - NASA's $10 billion telescope peers deeper into space than ever, revealing previously undetectable details in the cosmos.. NBC News. 12 July 2022 [16 July 2022]. （原始内容存档于2022-07-15）.  Garner, Rob. NASA's Webb Delivers Deepest Infrared Image of Universe Yet. NASA. 11 July 2022 [12 July 2022]. （原始内容存档于12 July 2022）.  Overbye, Dennis; Chang, Kenneth; Tankersley, Jim. Biden and NASA Share First Webb Space Telescope Image – From the White House on Monday, humanity got its first glimpse of what the observatory in space has been seeing: a cluster of early galaxies.. The New York Times. 11 July 2022 [12 July 2022]. （原始内容存档于12 July 2022）.  Pacucci, Fabio. How Taking Pictures of 'Nothing' Changed Astronomy - Deep-field images of "empty" regions of the sky from Webb and other space telescopes are revealing more of the universe than we ever thought possible. Scientific American. 15 July 2022 [16 July 2022]. （原始内容存档于2022-07-16）.  Deliso, Meredith; Longo, Meredith; Rothenberg, Nicolas. Hubble vs. James Webb telescope images: See the difference. ABC News. 14 July 2022 [15 July 2022]. （原始内容存档于2022-07-15）.  Kooser, Amanda. Hubble and James Webb Space Telescope Images Compared: See the Difference - The James Webb Space Telescope builds on Hubble's legacy with stunning new views of the cosmos.. CNET. 13 July 2012 [16 July 2022]. （原始内容存档于2022-07-17）.  Atkinson, Nancy. Now, We can Finally Compare Webb to Other Infrared Observatories. Universe Today. 2 May 2022 [12 May 2022]. （原始内容存档于10 May 2022）.  Robert Lea. James Webb Space Telescope spots 'Sparkler Galaxy' that could host universe's 1st stars. SPACE.com. 29 September 2022 [2023-03-07]. （原始内容存档于2023-03-07）.  SMACS J0723.3-7327 （页面存档备份，存于互联网档案馆） STScI. Hubble Legacy Archive website NASA’s Webb Delivers Deepest Infrared Image of Universe Yet （页面存档备份，存于互联网档案馆） NASA Press release