Deployed by the space shuttle on 23 July 1999, the Chandra telescope is Nasa's flagship mission exploring the realms of X-ray astronomy.
The observatory, which is named after the Indian-American astronomer Subrahmanyan Chandrasekhar, orbits the Earth once every 64 hours.
Here, Darren Baskill, an X-ray astronomer at the University of Sussex, explains Chandra's importance, and looks at some of the colourful images it has produced in the past 10 years.
Unless stated otherwise, images courtesy Nasa/CXC/SAO. Music courtesy KPM Music. Slideshow production by Paul Kerley. Publication date 23 July 2009.
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