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The '''Chandra X-ray Observatory'''<ref>[http://chandra.harvard.edu/index.html Chandra homepage]</ref> is one of [[NASA]]'s Great Observatories. It is an [[X-ray]] telescope designed to perform astronomy from low Earth orbit. It was launched on July 23, 1999. Until its launch, the project was known as Advanced X-Ray Astrophysics Facility (AXAF).  

The '''Chandra X-ray Observatory'''<ref>[http://chandra.harvard.edu/index.html Chandra homepage]</ref> is one of [[NASA]]'s Great Observatories. It is an [[X-ray]] telescope designed to perform astronomy from low Earth orbit. It was launched on July 23, 1999. The project was known as Advanced X-Ray Astrophysics Facility (AXAF) until its launch, when it was renamed in honor of the astrophysicist [[Subrahmanyan Chandrasekhar]].  

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