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The first stars to ever exist did not form until around 300 million years after the Big Bang, a new study has found. Academics from UCL and the University of Cambridge used high-powered telescopes to peer at six of the the most distant observable galaxies in the universe in the hope of determining the "cosmic dawn". Data from the Hubble and Spitzer telescopes revealed the light emitted from these six galaxies was produced when the Universe was just 550m years old. The Universe itself is known to