Correct Answer: (d) Subramanyam Chandrashekhar
Solution:"Chandra" X-ray telescope has been named after famous physicist of Indian origin Subramanyam Chandrasekhar.
About Chandra X-Ray Observatory
• It is one of NASA’s premier space telescopes specially designed to detect X-ray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes.
• It was launched on July 23, 1999, aboard the Space Shuttle Columbia (STS-93).
• Because X-rays are absorbed by Earth’s atmosphere, Chandra must orbit above it, up to an altitude of 139,000 km (86,500 mi) in space.
• It is part of NASA’s “Great Observatories” along with the Hubble Space Telescope, the Spitzer Space Telescope and the now deorbited Compton Gamma Ray Observatory.
• It is managed by NASA’s Marshall Center for the Science Mission Directorate, NASA Headquarters, Washington, D.C.
• It is the world’s most powerful X-ray telescope. It has eight-times greater resolution and is able to detect sources more than 20-times fainter than any previous X-ray telescope.
• Chandra allows scientists from around the world to obtain X-ray images of exotic environments to help understand the structure and evolution of the universe.