A “big squeeze” in the universe usually refers to the Big Crunch idea: a possible future where cosmic expansion stops and everything collapses back inward. Some people use “big squeeze” as a more vivid nickname for that collapse scenario, where the universe is compressed into a much denser state.

Simple meaning

In plain language, it means the universe would stop stretching out and start shrinking instead.

That would be the opposite of the Big Bang’s outward expansion.

Why people say it

The phrase is often used to make the idea easier to picture. Instead of imagining the universe “crunching” into something tiny, “squeeze” suggests everything being pressed tighter and tighter together.

Where it appears

The term also shows up in discussions of cyclic or pulsating-universe ideas, where the cosmos might alternate between expansion and contraction.

A recent cosmology paper even uses “Big Squeeze” for a contracting-universe interpretation, though that is a proposed model rather than established consensus.

Important note

This is not the mainstream view of the universe’s fate. Most current astronomy points toward continued expansion and a long-term “Big Freeze,” not a collapse.

TL;DR: “Big squeeze” is a casual way to describe a universe that collapses inward, basically the same general idea as the Big Crunch.