Why The Multiverse May Not Be Madness

Why The Multiverse May Not Be Madness

The multiverse—the idea that infinite universes stretch beyond our own—has gained traction among physicists.

Alternate realities, parallel dimensions, and multiple universes, whatever you call it, is a popular trope in science fiction.

In recent years, such ideas have shifted from fantasy and speculation toward science.

Theoretically, infinite universes might stretch beyond our own, like endless bubbles in a sea of boiling water.

In some other universe, you’re not reading this sentence but skydiving. In another, you’re nothing but a cockroach. In yet another, not only is life impossible, but atoms don’t even exist.

Author summary: Physicists consider multiverse theory.

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Science Friday Science Friday — 2025-10-12