Astronomers solve mystery of 'born again' stars with Hubble Space Telescope

University of Texas astronomer Natalie Gosnell has used Hubble Space Telescope to better understand why some stars aren't evolving as predicted. These so-called "blue stragglers" look hotter and bluer than they should for their advanced age. It's almost as it they were somehow reinvigorated to look much younger than they really are.

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