Wait... What came before the big bang?

Wait... What came before the big bang?

Cosmologists used to think the universe was totally timeless: no beginning, no end. That might sound mind-melting, but it’s easier on the scientific brain than figuring out what a set starting point would mean, let alone when it would be. So some physicists have cooked up alternative cosmological theories that make time’s role seem a little less important. The concepts are as trippy as those black-light posters you had in college. Wait a minute… Flowers of the multiverse The main reason some physicists obsess over the beginning of the universe is because so much evidence points to there being one. But what if our universe grooved within an ageless multiverse—like a patch of ground from which countless flowers bloom. In this model, each universe has a big bang and keeps its own time. In the most popular version, each universe might even have its own version of physics too. Infinite possibilities yield infinite results: Some say this theory explains life itself. We’d have to be extremely lucky for a single big bang to create a universe with the perfect conditions for life as we know it, but if new universes are springing up all the time, it’s no wonder one of those cosmic neighborhoods turned out just like ours. The universes in this garden grow or wither according to their own rules, while the multiverse around them goes on without a beginning or an end. It’s an elegant blend of change and timelessness, a floral brew many cosmologists are still sipping.

Read More: Popular Science

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