unlocking the mysteries of black holes, dark matter, dark energy, and life cycles of matter in the universe Goddard Space Flight Center Smithsonian Astrophysical Observatory text mdu Greenbelt, Md.] Cambridge, Mass.] National Aeronautics and Space Administration, Goddard Space Flight Center Smithsonian Astrophysical Observatory [2004] 2004 monographic eng

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16 p. col. ill. 28 cm. Cover title. "A beyond Einstein mission." Shipping list no.: 2004-0194-P. "NP-2004-4-629-GSFC." Also available via Internet from the GSFC web site. Address as of 7/13/04: http://constellation.gsfc.nasa.gov/images/public/resources/brochure/May2004/brochure%5Fmay04.pdf; current access available via PURL. n-us--- Constellation-X Artificial satellite X-ray astronomy Astronomical observatories United States NAS 1.83:2004-4-629-GSFC NAS 1.83:2004-4-629-GSFC http://purl.access.gpo.gov/GPO/LPS51326 http://purl.access.gpo.gov/GPO/LPS51326 GPO 040713 20160527193624.0 267297