10 best images NASA's Chandra X-ray observatory took over its 20 years on duty

10 best images NASA's Chandra X-ray observatory took over its 20 years on duty

This space telescope launched in July 1999 and investigated events that were not yet known of when it observed them.

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10 best images NASA's Chandra X-ray observatory took over its 20 years on duty
An artist illustration of the Chandra X-ray Observatory that was launched aboard the space shuttle Columbia. It is an space telescope that scans the sky for high energy x-rays that can only be detected from above the Earth’s atmosphere. Image credit: NASA/CXC.
One of the first images that Chandra took was an X-ray image of the supernova remnant Cassiopeia A. Image credit: NASA/CXC
The 30 Doradus, nicknamed “Tarantula Nebula,” is one of the largest star-forming regions located close to the Milky Way. This image has data from 24 days of Chandra observation. Image credit: NASA/CXC
Abell 2146 is the result of a collision and merger between two galaxy clusters. Chandra's X-ray is the purple colour, shows hot gas and the and optical data from the Hubble Space Telescope shows galaxies and stars. Image credit: NASA/CXC
G292.0+1.8 is a rare type of supernova remnant observed to contain large amounts of oxygen. The x-ray image shows rapidly expanding, intricately structured field left behind by the shattered star. Image credit: NASA/CXC
This is the region in the MIlky Way where a supermassive black hole weighing about 4 million times the mass of the Sun, called Sagittarius A*. Image credit: NASA/CXC
This is the nearby galaxy Messier 33 contains a star-forming region called NGC 604 where some 200 hot, young, massive stars reside. Chandra's data is combined with data from Hubble. Image credit: NASA/CXC
 Cygnus OB2 has massive stars that only last a few million years. During their lifetimes, they blast large amounts of high-energy winds into their surroundings. These violent winds can collide or produce shocks in the gas and dust around the stars, depositing large amounts of energy that produce X-ray emission that Chandra can detect. Image credit: NASA/CXC
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This supernova remnant was produced by a massive star that exploded in a nearby galaxy called the Small Magellanic Cloud. X-rays from Chandra (blue and purple) have helped astronomers confirm that most of the oxygen in the universe is synthesized in massive stars. Image credit: NASA/CXC
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