## black hole

Is the Universe finite or infinite? Is there infinity inside a black hole? Is space infinitely divisible or is there a shortest length? We talk to philosophers and physicists to find out.

On the twelfth day of advent we celebrate Stephen Hawking's contribution to cosmology.

On the eleventh day of advent we explore an unresolved puzzle concerning black holes which greatly intrigued Stephen Hawking.

Now we think we know all about black holes, here is another surprise: they are not completely black after all.

On the ninth day of advent we find out about the maths of black holes.

Behind door #8 we answer all the questions you've ever wanted to ask about the physical reality of black holes!

On the seventh day of advent we venture to a dark place we will never return from

On the sixth day of advent we find out why gravitational waves are so important in revealing the secrets of the Universe.

Roger Penrose, Reinhard Genzel and Andrea Ghez win the 2020 Nobel Prize in Physics for their work on black holes.

Explore a mystery that intrigued Stephen Hawking until the end of his life.