Astronomers have spotted gas clouds that contain material dispersed by the deaths of the universe's earliest stars.
This artist’s impression shows a distant gas cloud that contains different chemical elements, illustrated here with schematic representations of various atoms.
The stellar remains were discovered for the first time in distant gas clouds by astronomers using theThe find could help scientists better understand the conditions of the universe shortly after the"We detected three distant gas clouds with a chemical fingerprint matching what we expect from the first stellar explosions," study leader and Observatoire de Paris Ph.D. student Andrea Saccardi told Space.com via email.
During their lives, these stars performed nuclear fusion, taking atoms of hydrogen and helium and forging progressively heavier atomic elements. This also created the light these stars radiated and the energy that supported them against collapse under their own gravity. Once the stars ran out of fuel for nuclear fusion, the balance against outward radiation pressure and inward gravitational pressure ended, with gravity winning out.
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