Books like george's secret key to the universe

George's Secret Key to the Universe is a 2007 children's book written by Lucy and Stephen Hawking with Christophe Galfard. The book was followed by five sequels, George's Cosmic Treasure Hunt in 2009, George and the Big Bang in 2011, George and the Unbreakable Code in 2014 and George and the Blue Moon in 2016 and George and the Ship of Time in 2018. It is intended for readers aged 10 and up.

The main characters in the book are George Greenby, Susan Bellis, Eric Bellis, Annie Bellis, Dr. Reeper, and Cosmos, the world's most powerful computer. Cosmos can draw windows allowing people to look into outer space, as well as doors which act as portals allowing travel into outer space. Written like a story, it aims to describe various aspects of the universe in a manner that is accessible to children and others new to the topic. It starts by describing atoms, stars, planets and their moons. It then goes on to describe black holes, which remains the topic of focus in the last part of the book. At frequent intervals throughout the book, there are pictures and "fact files" of the different references to universal objects, including a picture of Mars with its moons.