"It is said that fact is sometimes stranger than fiction, and nowhere is that more true than in the case of black holes. Black holes are stranger than anything dreamed up by science fiction writers."
In 2016 I delivered the BBC Reith Lectures on black holes, which have fascinated me for years. In the Reith Lectures, I argue that if we could only understand black holes and how they challenge the very nature of space and time, we could unlock the secrets of the universe.
They are now available in paperback form, introduced and annotated by BBC Science Editor David Shukman, with illustrations like the one below throughout.