Apollo 11: looking back

(NBC News) On July 16, 1969, the fires of celestial science lifted three men from the surface of the Earth and toward the greatest exploration in human history.
But as the name of the mission indicates, it took many steps to get Apollo 11 off the ground.
Apollo 1 was scheduled to launch early in 1967, but a pre-flight fire swept through the capsule, killing all three astronauts on board.
NASA continued on, testing different phases of the ultimate goal, and in 1968, Apollo 8 took a three man cre