Today's Video

Best of 2017: Ripples of gravity, flashes of light

On Aug. 17, 2017, the Laser Interferometer Gravitational-wave Observatory (LIGO) and Virgo detected for the first time gravitational waves from the collision of two neutron stars. The event was not only "heard" in gravitational waves but also seen in light by dozens of telescopes on the ground and in space. Learn more about what this rare astronomy event taught us in this video from LIGO and Virgo.

Provided by National Science Foundation
Runtime: 4:18