What was the Paris Meridian? The “Full Meridian of Glory” tells its story and the stories of those who surveyed it. It's a saga of love and betrayal, dedication and deprivation, heroism and pettiness, and sometimes death. Truth really is stranger than fiction.

The Milky Way used to be the only galaxy people knew. Big telescopes changed that. Now we know there are billions of them. They come in different sizes and shapes and have some surprises for us.

Most people think of Galileo as the man who is a symbol of the heroic voice of truth against a powerful reactionary Church. However this mythic Galileo is not the one Dava Sobel's book, "Galileo's Daughter", reveals through his faith, his work and his daughter's love.

Will a secret organization and an evil genius succeed in destroying a big physics experiment and killing the scientists involved? Can George and Annie find and disarm the quantum bomb? How is Schrödinger's cat involved? Another great blend of fantasy and science from Lucy and Stephen Hawking.

George is sad. The family next door are moving away and things will be so dull without them. Or maybe not! Why is the new Martian rover acting so strangely? Has the search for life met an alien threat to Earth? Lucy and Stephen Hawking take George and the reader on a cosmic adventure.

In Lucy & Stephen Hawking's book, the hero George used to have a quiet life, but now he's trying to rescue his next door neighbor from a black hole. Here's a lively illustrated story, beautiful color images of the universe, and from the man who knows, a great explanation of what a black hole is.

Millions of people have followed the treks of the Martian rovers Spirit and Opportunity as they explored the red planet. In 2009 Spirit became trapped and was last heard from in March 2010. After a year being unable to contact her, on May 24, 2011, with sadness, NASA formally ended her mission.

Aristotle's perfect cosmos didn't need gravity to hold it together. However a system with planets orbiting the Sun called for an explanation. In the process, Newton was inspired by a falling apple, but Galileo's experiments with falling bodies didn't involve dropping them off the Tower of Pisa.

Every 75 years or so a very special member of the Solar System swoops close to the Sun, becoming visible in our skies like a cosmic ghost. Read about Halley’s Comet, the most famous comet of all.

It visits every 75 years or so, appearing like a celestial ghost in our skies. In the past it has been a bad omen and scary object, but last time it came it was a big event around the world. What is it? Halley's Comet, the most famous comet of all.