Daniel Whiteson Particle Physicist and co-author of We Have No Idea, a novel of gaps in our knowledge, talks with Graeme about the Universe.
His book is described as "a sometimes silly guide to unknown questions about the universe."
It delves into the big gaps in our knowledge about science and trying to understand dark matter and energy.
What is this world around us made of?
Dr Whiteson says most of the universe is made out of stuff that we don't actually know, yet we have so many simple questions like "what happens after we die?"