Download or read book Human Travel to the Moon and Mars written by Matt Doeden and published by Twenty-First Century Books. This book was released on 2011-10-01 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book looks at the costs of crewed missions to Mars And The Moon, As well as the potential payoff; the dangers of space exploration, both physical and psychological; And The potential for human settlement on Mars. We'll hear a variety opinions-from astronauts, astronomers, U.S. presidents, and NASA officials.