A cluster of young stars - about one to two million years old - located about 20,000 light years from Earth. Data in visible light from the Hubble Space Telescope (green and blue) reveal thick clouds where the stars are forming. High-energy radiation in the form of X-rays, however, can penetrate this cosmic haze, and are detected by Chandra (purple). Image credit: X-ray: NASA/CXC/SAO/Sejong Univ./Hur et al; Optical: NASA/STScI
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