Thus, at 11.49 A.M. May 18, 1969, Apollo 10’s crew of John Young, Thomas Stafford, and Eugene Cernan bolted into low-Earth orbit were soon on their way to our little sister in the sky.

History glazes over Apollo 10 because of the significance of what followed. However, the crew completed the same tasks as Apollo 11 - minus landing on the Moon. And they used Snoopy, the lunar ...