Masu. The assumption that the universe is infinite and the fact that the universe continues to expand seem contradictory. However, expanding and being infinite are not contradictory.

Our universe appears to be bound by a finite set of laws, yet we often talk about things that go on for an eternity. “Infinity” is a strange idea. But it’s crucial if you want to understand ...

One question has preoccupied humankind for thousands of years: Do infinities exist? More than 2,300 years ago Aristotle distinguished between two types of infinity: potential and actual. For ...

How do we represent infinity in science and the arts? Does it actually exist or is it a construction of the human mind?

Worse, an infinite universe means that these basics may be unknowable. Elmegreen might be content with her 200 billion galaxies. And sure, this playground is vast. It’ll definitely keep us busy.

Our universe is one of many—perhaps infinity—other universes, each with its own special-snowflake characteristics. But cosmologists in the 20th century did discover, for the first time, that ...