Word of the month- multiverse

Stephen Hawking says that our universe exists as just one universe, which is only one of many.How many?

10500

That is the number of possible universes quoted by Hawking, to give you an idea of how big that is; If it took you a millisecond to look at each one, and you had startedat the moment of the big bang, today you would only be at number-

1020

(please excuse the layout, it was very hard to find a font to write these numbers!)
Our universe exists as just one universe within this 'multiverse'.

Multiverse

The multiverse (or meta-universe, metaverse) is the hypothetical set of multiple possible universes (including the one unique universe we are pretty sure we consistently inhabit) that together comprise everything that physically exists: the entirety of space and time, all forms of matter, energy and momentum, and the physical laws and constants that govern them. The term was coined in 1895 by the American philosopher and psychologist William James.^[1] The various universes within the multiverse are sometimes called parallel universes.

The structure of the multiverse, the nature of each universe within it and the relationship between the various constituent universes, depend on the specific multiverse hypothesis considered. Multiverses have been hypothesized in cosmology, physics, astronomy, philosophy, transpersonal psychology and fiction, particularly in science fiction and fantasy. In these contexts, parallel universes are also called "alternative universes", "quantum universes", "interpenetrating dimensions", "parallel dimensions", "parallel worlds", "alternative realities", and "alternative timelines", among others.