Science As Black Holes Collide, Scientists Detect Gravitational Waves 7:45pm February 12, 2016 by Geoff Brumfiel Space Science Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2016 NPR. To see more, visit NPR. 300x250 Ad More Morning Edition Spain's Prime Minister Pedro Sánchez decides not to quit, after days of speculation National Should the U.S. government decide who qualifies as a gun dealer? by Rick Pluta 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate