RM
First generation of stars, artwork
First generation of stars. Artwork of the first stars in the universe, thought to have formed over 13 billion years ago, when the universe was only a few million years old. As the universe cooled after the Big Bang, atomic nuclei began to form. After 300 to 600 million years, stars and small galaxies began to form. The stars were huge and hot, living comparatively short lives before dying in supernova explosions. The material from these early supernovae provided the heavy elements needed for the later formation of planets and life on them.
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