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Tracking down the first stars Astronomers at NASA have seen signs of the first stars in the universe. Alexander Kashlinsky and colleagues at NASA's Goddard Space Flight Center in Greenbelt observed fluctuations in the cosmic infrared background which, they say, are due to "Population III" stars. The observations were made with the Spitzer Space Telescope (Nature 438 45).
Population III stars are thought to have formed in the first 200 million years after the Big Bang.
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