pre-Big-Bang activity

Cosmos may show echoes of events before Big Bang-BBC
"Renowned cosmologist Roger Penrose said that analysis of this cosmic microwave background showed echoes of previous Big Bang-like events."
http://www.bbc.co.uk/news/science-environment-11837869
[1011.3706] Concentric circles in WMAP data may provide evidence of violent pre-Big-Bang activity
http://arxiv.org/abs/1011.3706
Penrose claims to have glimpsed universe before Big Bang - physicsworld.com
http://physicsworld.com/cws/article/news/44388
Penrose: WMAP Shows Evidence of ‘Activity’ Before Big Bang | Universe Today
http://www.universetoday.com/79750/penrose-wmap-shows-evidence-of-%e2%80%98activity%e2%80%99-before-big-bang/

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