成人快手 World Service - The Forum, Fragmentation: How Tiny Pieces Explain the Whole Picture, Is the idea of a 鈥榤ultiverse鈥� so theoretical it鈥檚 mere fantasy?

Is the idea of a 鈥榤ultiverse鈥� so theoretical it鈥檚 mere fantasy?

Professor Brian Greene explains to Bridget Kendall why extraordinary theories about the universe are more than just fantasy.

Photo: The Hubble ultra deep field (credit: NASA/ PA)

23 October 2015

1 minute