Space exploration. Moon's 'abundant resources' largely an unknown quantity.
Seife
Charles
C
D005118:Extraterrestrial Environment; D005740:Gases; D006371:Helium; D007053:Ice; D007554:Isotopes; D016081:Moon; D013026:Space Flight; D014867:Water
D005740:Gases; D007053:Ice; D007554:Isotopes; D014867:Water; D006371:Helium