This week, Space Shuttle mission STS-93 deployed the Chandra X-Ray Observatory, the world's most powerful X-Ray telescope. The third of NASA's "Great Observatories," the Chandra X-Ray Observatory will study X-Rays rather than visible light (the Hubble Space Telescope) or gamma rays (the Compton Gamma Ray Observatory). This site offers overviews and news of the Observatory and its mission. Operated for NASA by the Harvard-Smithsonian Center for Astrophysics, this site provides resources for students, scientists, the press, and general users. In the Public Information and Education section, users will find photos, a field guide, and educational materials. The Scientific User Support Section includes detailed target information, various documents, newsletters, and information on the Emission Line Project (ELP). In addition, the site provides breaking mission news, links to live video feeds, telemetry diagrams, and a timeline.