The Hubble Telescope has now gazed into deep space for 25 years, imaging galaxies, nebulas, and supernovas for a new picture of the universe and our place in it. In honour of its 25th anniversary, space historians David DeVorkin and Robert Smith team up again to tell the stories of 25 iconic moments in the illustrious telescope's career, illustrated with breath taking, never-before-seen images. Here are the major challenges and triumphs, the key scientific findings, the brilliant scientists behind the scenes, and the public's love affair with a space telescope. Here too, selected by top science and photo editors at National Geographic, are the 25 Hubble All-Stars: awe-inspiring images of beauty and wonder--the best pictures yet--achieved thanks to this amazing space-based telescope. And, more than anything, here is the story of how the Hubble space telescope expanded and enriched our concept of the universe we live in, to wondrous visions never before seen.