Pick of the day: Horizon - Swallowed By A Black Hole

The black hole at the centre of the Milky Way galaxy is getting ready to feast, but not on anything that would appeal to an Earthling.

A gas cloud three times the size of our planet has strayed within the gravitational reach of our nearest supermassive black hole. So across the globe telescopes are being trained on the heart of the galaxy, some 27,000 light years away, in the hope of seeing this unique cosmic spectacle.

For cosmic detectives everywhere it is a unique opportunity. For the first time in the history of science they hope to observe the awesome spectacle of a feeding black hole. With Professor Caleb Scharf, director of astrobiology at Columbia University.