Since cementing his place in rock's hall of fame, for his role as lead guitarist and songwriter in one of Britain’s biggest ever bands, Queen, Sir Brian May has also completed a PhD in astrophysics.
And he has now helped put together what's being described as the first ever book to explore the wonder of the galaxies in 3D: "Islands in Infinity."
Sir Brian, 78, spoke to Sky News, along with co-author of the book, Professor Derek Ward-Thompson.