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.
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