1971: Nearing the end of a second moonwalk, Apollo 14 astronaut and avid golfer Alan Shepard attaches a six-iron golf club head to the end of a sample collecting tool and hits two golf balls. Hampered by thick gloves and a stiff suit, Shepard swings the club with one hand, sending the first ball into a nearby crater before hitting the second squarely. In the one-sixth gravity of the Moon, Shepard said the ball traveled for "miles and miles and miles," but later estimated the distance as 200 to 400 yards. The golf club is now on display at the U.S. Golf Association headquarters in Far Hills, N.J.