flat universe

Cultural  

1. If there is just enough matter in the universe for its gravitational force to bring the expansion associated with the big bang to a stop in an infinitely long time, the universe is said to be flat. The flat universe is the dividing line between an open universe and a closed universe.

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Most theorists believe that the universe is flat.

Example Sentences

We refer to this as a flat universe, and the kind of Euclidean geometry you learned in high school applies in this type of universe.

From Textbooks • Oct. 13, 2016

In fact, since general relativity implies that matter creates the space in which it exists, there is a special symmetry to a flat universe.

From Textbooks • Aug. 12, 2015

Facebook — this artificial, flat universe of human relationships — is not the place where I want to start anew.

From Salon • Jun. 15, 2012

It is not to stand on a tower And see the flat universe reel; Our mortal sublimities drop Like raiment by glisterlings worn, At a sweep of the scythe for the crop.

From Poems — Volume 2 by Meredith, George