'Let it be said at once that his book is an outstanding success. It has been immaculately researched and is packed with detail, but written in a way that will appeal to readers of all kinds...this is an important book, and should be in every scientific library.'

– Sir Patrick Moore, Times Higher Educational Supplement

‘The man was a fine engineer, a good pilot – although there is some dispute about that – patriotic, cool, courageous and hard-working, just the sort of guy you want next to you when the chips are down.'

– Sunday Times

'Although he was the first man to set foot on the moon, Neil Armstrong has always been the least public of the Apollo 11 astronauts. He has seldom given interviews, or lent his name to merchandising tat, or haunted the same professional old-boy circuit as his former colleagues... But at 75, he’s finally decided to break his silence - or to have it broken for him by his official biographer, James R.Hansen.’

– Sunday Telegraph

'To understand Armstrong on his own terms is to see a large truth of our time...[Hansen’s] mastery of detail is put to splendid use. The narrative of the moon mission is crisp and dramatic, the science clear. He deftly takes us back into those few days of global fascination with the adventure of the three distant voyagers and the tense uncertainty about how it would turn out...I finished Hansen’s Apollo story with a wholly fresh sense of awe at the magnitude of NASA’s achievement...a compelling and nuanced portrait of the astronaut.'

– James Tobin, Chicago Tribune

'Neil Armstrong—naval aviator, research pilot, astronaut, American hero and larger-than-life icon. He may have thought it was "one small step for [a] man," but it was one giant leap for the rest of us...First Man is primed to be one of the definitive reference works on the lunar program.'

– U.S. Navy Captain William Readdy, Aviation Week & Space Technology

'Most of the astronauts’ books are about the adventure. Jim Hansen’s well researched and documented book is about the adventurer. First Man is a compelling story of a modern-day Columbus which provides the rare opportunity to understand the personal qualities driving explorers. Quiet, complex, and deep, Armstrong, as fuel was running out, was the right man at the right time to take America and the world to the surface of the moon.'

– Eugene F. Kranz, author of Failure Is Not an Option

'A powerful, unrelenting biography of a man who stands as a living testimony to everyday grit and determination... A must for astronaut buffs and history readers alike.'

– Publishers Weekly

'Ever since Apollo 11’s "one giant leap for mankind" in 1969 the world has wondered who Neil Armstrong really is. Now, at last, Jim Hansen has stripped away the myths and mysteries to bring us face to face with the man himself. This definitive portrait offers many new and fascinating details about Armstrong and his life and about the momentous and unforgettable era of exploration in which he was lucky enough—and talented enough—to play a key role.'

– Andrew Chaikin, author of A Man on the Moon

'This impressively documented and engagingly written biography will stand the test of time.'

– Library Journal

'Masterfully written...technically accurate, scholarly yet independent and accessible...Mission accomplished and a perfect touchdown.'

– Leonard David, Ad Astra, The Magazine of the National Space Society

'Hansen’s research is staggeringly impressive... A work that has great appeal for anyone interested in why we explore, who we are in this aerospace age, and what it was about the United States that could enable a little kid from Wapakoneta, Ohio, to take that "one small step" at Tranquility Base in the summer of 1969. A must read!'

– Richard P. Hallion, chief historian for the U.S. Air Force

'Jim Hansen has captured the essence of Neil Armstrong, not only as the first man on the Moon, but also as an outstanding aviator and astronaut. I was there for Neil’s other major "space step"—he recovered Gemini 8 from the ultimate end game with aggressive action, cool skill and creative judgement seldom performed in any aviation or space endeavor. Just 16 days after the deaths of the Gemini 9 crew, he probably saved the Moon. Jim Hansen has written an exceptional and accurate account of a unique period in aerospace history and the adventures of Neil Armstrong.'

– Dave Scott, Gemini VIII, Apollo 9, Commander, Apollo 15