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The Evolution of the Universe The Evolution of the Universe* John D. Barrow
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Are You Expanding???
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There is no centre and and there is no edge
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A Recipe for Life helium + helium beryllium helium + beryllium carbon carbon + helium oxygen
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Why is the Universe so Big ? hydrogen helium carbon 10 billion years of alchemy 10 billion years of expansion 10 billion light years of space
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The Universe is Almost Empty
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The Universe contains only 1 Atom per cubic metre 1 Earth per (10 l–yr) 3 1 Star per (1000 l–yr) 3 1 Galaxy per (10 7 l–yr) 3 1 ‘universe’ per (10 10 l–yr) 3
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Our Universe IsCool T 1/size
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The Sky is Dark at Night
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Life-supporting Space is…. Almost empty Big and Old Dark and Cold
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Habitable Universes Need Close to critical expansion Isotropic expansion Graininess level of about 1 part in 10 5
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The Inflationary Universe Very early 10 -35 sec
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Planck Mission Microwave Sky Map
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The Spectrum of Temperature Fluctuations
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Changing the visible matter density Wayne Hu Changing the dark matter density Wayne Hu A Cosmological Cornucopia
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Gravitational-Wave ‘Twist’ Signature in the radiation polarisation BICEP 2, 2014
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Planck Dust Map The Universe is Dusty
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Chaotic Inflation
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Eternal Inflation
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Will the Universe Expand Forever ???
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The Violent End of the Solar System
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Dark energy ( ) and deviation from critical expansion ( k ) Wayne Hu
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Dark Energy Dominates the Universe
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