How the Stars Were Born

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4 END OF THE DARK AGES The death of the mega-stars triggered the formation of normal stars, creating the first recognizable dwarf galaxies. Their radiation in turn burned through the remaining shrouds of hydrogen, bringing the dark ages to a close TIME Graphic by Joe Lertola Sources: Professor Avi Loeb, Harvard University; Professor Richard Ellis, Caltech

GALAXY IMAGE: JEAN-PAUL KNEIB, RICHARD ELLIS AND NASA/ESA

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