Dr Mike Goldsmith studied the philosophy of time and space at Keele University, where he also obtained his PhD in astrophysics. He was formerly the head of Acoustics at the UK's National Physical Laboratory and is now an author of non-fiction books for children.
Mark A. Garlick is a freelance illustrator and author with a strong scientific background. He has a Bachelor's degree in astronomy from University College London (UCL) and a PhD. in astrophysics from the Mullard Space Science Laboratory. His digital illustrations cover a broad range of scientific subjects, from Earth's natural history to space technology.