Team solves glitches to save NASA’s second mission to land on the Moon.
NASA sponsored contest focuses on breaking through frozen soil to harvest water ice.
Spacecraft made many important discoveries in 2.8-billion-mile mission.
SELP group tours key battle sites with military historian.
Great leaders miscalculated and unlikely leaders emerged in July 1863.
SEAL experiment will examine how lunar regolith absorbs and releases volatiles.