The Big Bang: Fact or Fiction?. The Big Bang. Fact or fiction?. Dr Cormac O’Raifeartaigh. The expanding universe (1929 ). many galaxies moving apart. rewind graph: universe converges infinite density, temp beginning of time: Big Bang?. The origin of the universe. Georges Lemaitre.
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The Big Bang
Fact or fiction?
Dr Cormac O’Raifeartaigh
What is pushing out?
General theory of relativity
gravity = curvature of space-time
Apply Einstein’s gravity to Universe
COBE satellite (1992)
WMAP satellite (2002)
immediately after BB
Further reading: ANTIMATTER
14 billion years ago, universe concentrated at a point
Primordial explosion of matter, energy, space and time
Universe expanding and cooling ever since
Misnomer: singularity problem
Known matter: 4%
Dark matter: 23%
Dark energy: 73%