Waar is het water gebleven dat ooit zo rijkelijk over het Marsoppervlak vloeide? Wat weten we over het klimaat dat de afgelopen paar miljard jaar op de Rode Planeet heerste? Waarom verschillen het vlakke noordelijke en het bergachtige zuidelijke…
A Fascinating March through History and the Evolution of the Modern-Day Calendar . . .In this vivid, fast-moving narrative, you'll discover the surprising story of how our modern calendar came about and how it has changed dramatically through the…
The Calendar and its History:
This fascinating book draws together a wealth of diverse material on the much-trusted (and rarely disputed) phenomenon we know as the calendar. From the fundamentals of astronomy to the world's ancient time-keeping…
A narrative history of the men and women who have explored Mars and mapped its surface from afar, and in so doing conditioned our understanding of our nearest planetary neighbour. The maps of Mars are exquisitely detailed representations of a land…
This guide for the backyard astronomer provides basic information, offers activity ideas, and gives construction details and assembly drawings for six telescopes.