Video: What Are Gravitational Waves?

"In September 2015, scientists witnessed something never seen before: two black holes colliding. Both about 30 times as big as our Sun, they had been orbiting each other for millions of years. A fraction of a second before the crash, they sent a vibration across the universe at the speed of light that was picked up by the LIGO detector. So what are these ripples in space? Amber L. Stuver explains. " TED-Ed includes lessons

Keywords: RESEARCH Gravity Waves Physics Observation Discovery Technology

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Space Messengers is made possible in part by the Citizen Diplomacy Action Fund for U.S. Alumni; an opportunity sponsored by the U.S. Department of State with funding provided by the U.S. Government and administered by Partners of the Americas. This project is supported in part by New Mexico Arts, a division of the Department of Cultural Affairs, and by the National Endowment for the Arts