NASA's Hubble Space Telescope has revealed the largest known group of star clusters, nearly a thousand times the size of the Milky Way. (Courtesy: NASA, ESA, J. Blakeslee (NRC Herzberg Astrophysics Program, Dominion Astrophysical Observatory), and K. Alamo-Martinez (National Autonomous University of Mexico))
NASA's Hubble Space Telescope has revealed the largest known group of star clusters, nearly a thousand times the size of the Milky Way.
The image, taken in 2010 by the telescope's Advanced Camera for Surveys, depicts an estimated 160,000 clusters swarming in a group of galaxies known as Abell 1689.
Researchers can use the data to trace dark matter, the scaffolding around which stars and galaxies were assembled billions of years ago.
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