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Astronomy

How Gravitational Waves Reveal Cosmic Collisions

Quick fact

The first direct detection of gravitational waves in 2015 came from two black holes colliding 1.3 billion light-years away, confirming a prediction Einstein made in 1916.

Why this is interesting

Imagine throwing a stone into a pond and watching ripples spread across the water. What if the pond was the fabric of the universe itself, and the stone was two black holes spiraling into each other?