Where Does Gold Come From? The Kilonova Answer
Every gold atom on Earth was forged when two neutron stars collided before our solar system formed. The 2017 kilonova GW170817 proved it.
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Dead Stars That Tick Like Clocks and Outlast Civilizations
A collapsed star the size of a city, spinning hundreds of times per second, keeping time more precisely than atomic clocks. How pulsars work.
Every Gram of Gold on Earth Came From Two Dead Stars Colliding
Every gold atom on Earth was forged when two neutron stars collided. The kilonova that made your ring happened before the Sun was born.
391 Black Hole Collisions Found — And One Is Moving the Wrong Way
LIGO's new catalog doubled gravitational-wave detections. Among them: the first black hole–neutron star merger on an elliptical orbit.