Gravitational waves help track newborn black hole's speed, direction

'New era of black-hole astronomy'

For the first time, researchers found that this new black hole shot away at over 50km per second—fast enough to leave its star cluster behind.
Researcher Koustav Chandra of Penn State called it "a new era of black-hole astronomy," since tracking these kicks with just gravitational data could help us connect the dots between invisible cosmic events and signals we can actually detect on Earth.