Chandra X-Ray Observatory
Last modified: 7 September 2018


The letter z has many definitions in X-ray astronomy. The intended one must be deduced from the context in which it appears:

Last modified: 7 September 2018
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The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email: Smithsonian Institution, Copyright © 1998-2017. All rights reserved.