⏰ when
When was the first gravitational wave from merging neutron stars detected?
PhysicsAstrophysics
Quick Answer
On 17 August 2017, detectors recorded GW170817, the first gravitational-wave signal from merging neutron stars.
The Full Story
On 17 August 2017, the LIGO and Virgo detectors observed GW170817, the first gravitational-wave signal from a neutron star merger. It was also seen in light across the electromagnetic spectrum, making it a landmark “multi-messenger” event. The collision happened in the galaxy NGC 4993, about 130 million light-years away. The event helped confirm that such mergers produce heavy elements like gold and platinum.
Key Facts
1.Detection date: 17 August 2017
2.Event: GW170817
3.Galaxy: NGC 4993, about 130 million light-years away
YouTube Angle
Suggested video title for this topic:
"Two dead stars collided—and changed astrophysics forever."