About time too : a miscellany of time /Royal Observatory Greenwich.

"How old is Earth? Can we look back in time? How long is a light year? How short is a femtosecond? What is Greenwich mean time? How old astronauts tell the time on the Moon? When did time begin? It's high time you knew the answers to these and many more intriguing questions, so why not pass the time reading this light-hearted, illustrated miscellany, packed with hundreds of amazing facts from the time experts at the Royal Observatory. In less than no time, you'll have discovered the myriad of influences that time has on our daily lives."--Provided by the publisher.