Chandra X-ray Observatory

Since its launch on July 23, 1999, the Chandra X-ray Observatory has been NASA's flagship mission for X-ray astronomy, taking its place in the fleet of "Great Observatories." We hope you’ll contribute to this interactive forum and to our ongoing conversation about the work we do. On-topic discussion is encouraged. We ask that you express yourself in a civil manner and treat other users with respect. We will monitor and may remove posts consistent with the Smithsonian terms of use, as described at http://si.edu/Termsofuse#user-gen The Smithsonian may archive materials posted on this website pursuant to its document retention policies. By posting content, you are giving the Smithsonian and those authorized by the Smith...