국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Fifty Years of Human Spaceflight: Why Is There Still a Controversy? : Chapter 11
저자	none
Keyword	ASTRONAUTS;; HISTORIES;; INTERNATIONAL SPACE STATION;; MANNED ORBITAL LABORATORIES;; MANNED SPACE FLIGHT;; SCIENCE;; SPACE EXPLORATION
URL	http://hdl.handle.net/2060/20100025875
보고서번호	NASA/SP-2010-4704
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	From the beginning of the U.S. program of human spaceflight until today, there has been controversy with respect to the value of human presence in space compared to its costs and risks. For example, the first science adviser to President Dwight D. Eisenhower, James R. Killian, Jr., said in 1960 that "Many thoughtful citizens are convinced that the really exciting discoveries in space can be realized better by instruments than by man." Yet less than six months later, President John F. Kennedy committed the United States to send Americans to the Moon "before this decade is out." The two men clearly applied different judgments on the value of human spaceflight to their words and actions. It has been 48 years since the first U.S. spaceflight, the 15-minute suborbital mission of Alan Shepard on 5 May 1961. Since then, 12 Americans have walked on the Moon, and there have been (as of 30 September 2009) 127 launches of the Space Shuttle, several long-duration stays of U.S. astronauts aboard the Russian Mir space station, and continuous occupancy of the ISS for over 10 years. As of 30 September 2009, 320 U.S. citizens had gone into orbit or beyond278 men and 42 women. Many U.S. astronauts have made several trips into space;; two have gone seven times each. An additional 176 non-U.S. citizens have also flown in space.2 It is worth asking: "With all this U.S. experience, why is there still controversy in this country regarding the wisdom of continuing a government program of human spaceflight?"