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For the past few decades, scientists have been looking at planets outside of our solar system to see if they could host life. Now, scientists have discovered another factor for habitability: radiation from the planet’s central star.

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Baryon acoustic oscillations, an artifact remaining from the Big Bang, can be used by scientists to measure cosmological distances regardless of how the distances are changing. Soon after the Big Bang, the beginning of our universe, all of the matter of the universe was packed densely into a much smaller space. The…