We used to think the Big Bang meant the universe began from a singularity. Nearly 100 years later, we're not so sure.

Mathematically, it is a monster, but we can understand it in plain English.

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Scientists find that bursts of gamma rays may exceed the speed of light and cause time-reversibility.

The official shop and members area for Big Think. Purchase merch from our shop, access exclusive members-only content, and help support our mission of making the world smarter, faster.

Scientists find that bursts of gamma rays may exceed the speed of light and cause time-reversibility.

The official shop and members area for Big Think. Purchase merch from our shop, access exclusive members-only content, and help support our mission of making the world smarter, faster.

Scientists find that bursts of gamma rays may exceed the speed of light and cause time-reversibility.