Star watch : the amateur astronomer's guide to finding, observing, and learning about over 125 celestial objectsPhilip S. HarringtonAgotado4,1Notifícame
How NASA learned to fly in space : an exciting account of the Gemini missionsDavid M. David Michael HarlandAgotado4,1Notifícame
Warum Planeten keine Würfel sind ... und andere astronomische GeheimnisseThomas BührkeAgotado3,0Notifícame
