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The Universe As We Know It · May 29 · 13 min

The Day We Caught a Neutron Star Collision

On August 17, 2017, a ripple in spacetime triggered alarms at observatories across the globe, launching the most coordinated astronomical observation ever attempted. What happened in the next 11 hours would confirm decades of theory, solve the mystery of where gold comes from, and open an entirely new way of seeing the universe. This is the story of GW170817—the cosmic collision that changed everything.

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On August 17, 2017, a ripple in spacetime triggered alarms at observatories across the globe, launching the most coordinated astronomical observation ever attempted. What happened in the next 11 hours would confirm decades of theory, solve the mystery of where gold comes from, and open an entirely new way of seeing the universe. This is the story of GW170817—the cosmic collision that changed everything.

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