NASA has recently made a breakthrough in the study of ultra-luminous X-ray (ULX) sources. ULXs are incredibly bright sources of X-ray radiation that can outshine their host galaxies, and the new observations from NASA’s Chandra X-ray Observatory have revealed some of the ULXs to be the brightest of their kind ever observed. These extremely luminous ULXs have been found to be powered by stellar-mass black holes, which means that these small objects can be much more powerful than previously thought. This new discovery could have major implications for understanding the physics of black holes and the formation of stars and galaxies.

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source: Phys.org