Neutron Stars Collide, and the Gravitational Wave Sends Ripples Through Astrophysics

Some 130 million years ago, two extremely dense balls of matter collided into each other. These two neutron stars, the city-sized cores of deceased giant stars, spiraled inward and merged to become a giant fireball. In the collision, they generated a sonorous ripple in spacetime known as a gravitational wave. On August 17 this year, …

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