A black hole
Media playback is unsupported on your device
Video

Cardiff scientists create black hole 'spotters' guide'

Astronomers at Cardiff University say they could have created a "spotters' guide" to help scientists identify hundreds of black holes.

The phenomena are incredibly dense objects exerting huge gravitational forces - strong enough suck in light.

The scientists have devised a model of how black holes distort waves of energy around them when they collide.

Their insight should help researchers pinpoint more black holes when two giant detectors are turned on in 2015.

Carwyn Jones reports.