Is There a Black Hole?

Dogs are a smart and are good boys, precisely because they're here. Chack is still rilliang from the fact that caas will have descended from wolves. James has been studying how black holes can stop galaxies forming stars. And we've detected signals from two black holes merging - but these are not light signals,. Whether it's visible light or if it's radio waves or gamma rays, all of us see them as gravitational waves.