The phrase "physical universe" refers to all of the matter, energy, and space that exists in the world around us. It includes everything we can see, touch, and experience with our senses. Full definition
Doesn't this violate some pesky law of physical universe (the first law of thermodynamics)? (nutritionfacts.org)
For pre-Copernican man, heaven was itself part of the space - time continuum, that is, it was part of the created physical universe even though it was inaccessible to man. (religion-online.org)
The article surveyed cosmologists, those who study the whole physical universe, or, as some of them believe, universes. (religion-online.org)