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Date: 2010-11-23 11:06:55Astronomy Observational astronomy International X-ray Observatory X-ray astronomy X-ray optics Chandra X-ray Observatory Einstein Observatory Telescope ROSAT X-ray telescopes Spacecraft Space telescopes | High-resolution x-ray telescopesAdd to Reading ListSource URL: ixo.gsfc.nasa.govDownload Document from Source WebsiteFile Size: 1,43 MBShare Document on Facebook |