
Some researchers think concentric ring patterns in measurements of the cosmic microwave background are evidence of a universe that existed before our own was born in the Big Bang. Credit: Roger Penrose and Vahe Gurzadyan.
By

Some researchers think concentric ring patterns in measurements of the cosmic microwave background are evidence of a universe that existed before our own was born in the Big Bang. Credit: Roger Penrose and Vahe Gurzadyan.