Scientists Measure Universe's Light Since the Big Bang: Evolution of the EBL

May 24, 2013 4:18 PM

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Since the Big Bang, the universe has been emitting light. Even today, these photons speed through our universe, allowing scientists to see stars that have long ago vanished. Now, researchers have examined extragalactic background light (EBL) and have measured its evolution over the past five billion years for the very first time.

An accurate measurement of the EBL is fundamental to cosmology. The bath of ancient and young photons suffusing the universe today, the EBL can help tell scientists about the early origins of our universe. After all, ever since the Big Bang, every photon--from ultraviolet to far infrared wavelengths...

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