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Planck's Time and the "Oldest Light" in the Cosmos - NaturPhilosophie
Who, What, Where? What happened at time t = 0? is still anybody's guess. At least, earlier observations of Planck's radiation had suggested the first generation of stars were bursting into life by about 420 million years after the Big Bang. However, scientists from Europe's Planck satellite mission now say the first stars lit up the Universe later than was previously thought...