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| View Original: | HistoryOfUniverse-BICEP2-20140317.png (5500x4250) | |||
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| Keywords: HistoryOfUniverse-BICEP2-20140317.png File History of the Universe svg en History of the Universe http //bicepkeck org/visuals html The bottom part of this illustration shows the scale of the universe versus time Specific events are shown such as the formation of neutral Hydrogen at 380 000 years after the big bang Prior to this time the constant interaction between matter electrons and light photons made the universe opaque After this time the photons we now call the CMB started streaming freely The fluctuations differences from place to place in the matter distribution left their imprint on the CMB photons The density waves appear as temperature and E-mode polarization The gravitational waves leave a characteristic signature in the CMB polarization the B-modes Both density and gravitational waves come from quantum fluctuations which have been magnified by inflation to be present at the time when the CMB photons were emitted National Science Foundation NASA JPL Keck Foundation Moore Foundation related - Funded BICEP2 Program http //bicepkeck org/faq html 2014-03-18 12 25 47 http //bicepkeck org/media/History-of-the-Universe-BICEP2 jpg National Science Foundation PD-USGov Uploaded with UploadWizard Cosmic microwave background BICEP Universe | ||||
