An artist’s impression of a rover exploring the surface of MarsMARK GARLICK/Science Photo Library/Alamy
The Secret Life of the UniverseNathalie Cabrol (Simon & Schuster (UK); Scribner (US))
David Bowie wasn’t the first or last to wonder if there is life on Mars. The question of whether we are alone in the universe is still a great mystery. Some believe aliens have been visiting our planet for millennia, live among us and have even infiltrated the White House and 10 Downing Street.
For the more scientifically minded, there are authoritative voices like that of Nathalie Cabrol. She is one…