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VLT Observes Huge Cloud of Ionized Hydrogen



Astronomers using ESO’s Very Large Telescope have taken a picture of DG121, a HII region located in the constellation of Puppis. HII regions, a type of emission nebulae, are created when young, massive stars ionize nearby clouds of interstellar gas with high-energy ultraviolet (UV) radiation. These objects are composed primarily of hydrogen, hence the name […]



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