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https://en.wikipedia.org/wiki/Cygnus_X-1

Galactic X-ray source in the constellation Cygnus that is very likely a black hole Cygnus X-1 Location of Cygnus X-1 (circled) Observation data Epoch J2000 Equinox J2000 Constellation Cygnus [ 1 ] Right ascension 19 h 58 m 21.67574 s [ 2 ] Declination +35° 12′ 05.7845″ [ 2 ] Appa…

https://www.federalregister.gov/documents/2025/08/01/2025-14572/reconsideration-of-2009-en…

Federal Register :: Reconsideration of 2009 Endangerment Finding and Greenhouse Gas Vehicle Standards Skip to Content Home Sections Money Environment World Science & Technology Business & Industry Health & Public Welfare Browse Agencies Topics (CFR Indexing Terms) Dates Public In…

http://www.astro.gsu.edu/~gies

Douglas R. Gies B.Sc. Physics and Astronomy, University of Toronto M.Sc. Astronomy, University of Toronto Ph.D. Astronomy, University of Toronto Postdoctoral Fellow, University of Texas at Austin, 1985-1988 Assistant Professor, Georgia State University, 1988-1994 Associate Profes…