Aeons Before the Big Bang?

Show full item record

Please use this identifier to cite or link to this item:

Title: Aeons Before the Big Bang?
Author: Penrose, Roger
Abstract: There is much impressive observational evidence, mainly from the cosmic microwave background (CMB), for an enormously hot and dense early stage of the universe referred to as the Big Bang. Observations of the CMB are now very detailed, but this very detail presents new puzzles of various kinds, one of the most blatant being an apparent paradox in relation to the second law of thermodynamics. The hypothesis of inflationary cosmology has long been argued to explain away some of these puzzles, but it does not resolve some key issues, including that raised by the second law. In this talk, I describe a quite different proposal, which posits a succession of universe aeons prior to our own. The expansion of the universe never reverses in this scheme, but the space-time geometry is nevertheless made consistent through a novel geometrical conception. Some very recent analysis of the CMB data, obtained from the WMAP satellite, will be described, this having a profound but tantalizing bearing on these issues.
Description: Presented on March 24, 2009 from 5:30 to 6:30 p.m. in the LeCraw Auditorium of the College of Management. Center for Relativistic Astrophysics Distinguished Lecture Runtime: 87:45 minutes
Type: Lecture
Date: 2009-03-24
Contributor: Georgia Institute of Technology. Center for Relativistic Astrophysics
University of Oxford. Mathematical Institute
Publisher: Georgia Institute of Technology
Subject: Astrophysics
Big bang theory

All materials in SMARTech are protected under U.S. Copyright Law and all rights are reserved, unless otherwise specifically indicated on or in the materials.

Files in this item

Files Size Format View Description
penrose1.mp4 148.6Mb MPEG-4 video View/ Open Download Video
flyer.jpg 321.9Kb JPEG image Thumbnail Flyer
penrose1_streaming.html 920bytes HTML View/ Open Streaming Video

This item appears in the following Collection(s)

Show full item record