Annie urgently needs the help of her best friend George. The robot that Annie's father, cosmologist Eric, sent to Mars is behaving very strangely; besides, Annie has discovered a highly mysterious letter in her dad's supercomputer... Could this be a message from aliens? Is there someone in the universe besides us? How can we find a planet in space suitable for life?
Understanding all this is not easy. But George, Annie, and their new friend Emmett do not lose hope of finding answers to their questions.
The new book by Stephen and Lucy Hawking is not just a gripping story of space adventures. It is full of amazing facts and the latest data about our Universe. You will also find scientific essays written by the best scientists of our time!