The Conversation
International · 2 hrs ago
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Astronomers found a galaxy in the throes of death – and they know what’s killing it
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Astronomers have discovered evidence that powerful galactic winds may be responsible for stopping star formation in massive galaxies in the early universe by expelling gas into space.
Astronomers found a galaxy in the throes of death – and they know what’s killing it
Powerful galaxy winds that blast gas into space may be a common killer of massive galaxies in the early universe. Joshua Worth, CC BY
At the start of cosmic history, galaxies were big clouds of gas, and they grew by turning that gas into stars. If a galaxy runs out of gas, it will stop forming stars and die.
Present-day galaxies have had more than 10 billion years to grow old and die. But this is not true in the early universe: we expect to see very few dead galaxies in the first billion years
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