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 Smithsonian permission to use or modify it for any educational, promotional, or other standard museum purpose, in media of all kinds whether now known or later developed.
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