In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

One is in our conception of inflation, the theory of the extremely early universe. In those tumultuous times, many universes may have inflated all at once (and kept going) and branched out into a ...

Hindu scripture draws attention to the idea that our universe is not the centre of everything, and our lives are not the only ones that matter. Instead, there are many, many universes where (for ...

Cosmic inflation is a faster-than-light expansion of the universe that spawned many others. Inflation was invented to explain a couple of features of the universe that are really hard to explain ...