Is the universe infinite? It's one of the most profound questions we can ask, and here's the short answer: We don't know. While we have learned a great deal about the universe, a portion of the cosmos ...

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Cosmologists have an embarrassing problem: we don’t know what shape the universe is. The cosmos has three possible geometries ...

The physical—and metaphysical—topic of infinity can be reflected upon in various ways. Yet, in examining a multitude of quotes on this most fascinating subject of boundlessness and inexplicability, I ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of the universe to its utmost limits, we can finally, confidently say that the ...