JFK Speech to Congress “I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the moon and returning him safely to the earth.” JFK AT RICE UNIVERSITY “We choose to go to the moon. We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win…I realize that this is, in some measure, an act of faith and vision, for we do not know what benefits await us. But if I were to say, my fellow citizens, that we shall send to the moon, 240,000 miles away from the control station in Houston, a giant rocket more than 300 feet tall, the length of this football field, made of new metal alloys, some of which have not yet been invented, capable of standing heat and stresses several times more than have ever been experienced, fitted together with a precision better than that of the finest watch, carrying all the equipment needed for propulsion, guidance, control, communications, food and survival, on an untried mission, to an unknown celestial body, and then returned it safely to earth, re-entering atmosphere at speeds of over 25,000 miles per hour, causing heat about half that of the temperature of the sun and do all this, and do it right, and do it first before this decade is out, then we must be bold.” www.m448中国最大的资料库下载