A Cyclical Universe

Roger Penrose's Cyclic Universe

Updated March 2026 In The End of the Universe I remarked on the surprising similarity between conditions in the very early Universe, just after the Big Bang, and the far future of the Universe. In this post I’ll give an overview of Roger Penrose’s model of the Universe  in which it passes endlessly through a… Continue reading A Cyclical Universe

The End of the Universe

How astronomers would view the Universe in 500 billion years time

In the Universe's far future, star formation will cease, and it will contain white dwarfs, neutron stars, and black holes. Over immense timescales, stellar remnants will decay, and black holes will evaporate through Hawking radiation. Ultimately, the Universe will consist solely of low-energy photons and dark energy, mirroring its early state.

Roger Penrose – Cycles of Time

The cylic model of the Universe proposed by Roger Penrose

Revised March 2026 Conformal cyclical cosmology (CCC) is Roger Penrose's model of the Universe where it passes endlessly through a possibly infinite number of cycles (or aeons) each of which starts with a big bang and ends with a rapidly expanding empty universe.  This fascinating idea was proposed in a rather technical book titled Cycles… Continue reading Roger Penrose – Cycles of Time