If you have any interest in astronomy – backyard hobbist or more serious scientist – you need to download this free eBook to your iBooks app on your iPad. (Requires an iPad using iBooks 2 or later and iOS 5 or later.) This is a huge book, almost 1GB, that’s chock full of informative text, interactive photo galleries, and movies. It documents the more than two decades of the history and discoveries of the Hubble space telescope. The Hubble Space Telescope Discoveries ebook is free in Apple’s iBookstore. In addition to the wealth of information about the Hubble, this eBook is a great illustration of what can be done with Apple’s free iBooks Author app, too. (The image is a screen cap from my iPad of an actual book page from my iPad, resized to fit the Gadgeteer’s page format.)
