An insider's view of how the massive black hole was discovered at the Galactic Center.

'One of the greatest achievements in comedy. A work of staggering genius' - David Walliams An international phenomenon and pop-culture classic, The Hitchhiker's

‘One of the world's sanest, smartest, kindest, funniest voices’ – Independent on Sunday This 42nd Anniversary Edition includes exclusive bonus material fr

And Another Thing ... will be the sixth novel in the now improbably named Hitchhiker's Guide to the Galaxy trilogy. Eight years after the death of its creator,

The State of the Universe annuals provide an annual astronomy review suitable for the popular science-level reader. The 2008 annual covers the year’s astronom