[alexander_busek]

"If propellant was were available from the moon, this could dramatically lower the mass needed from the Earth for a NASA Mars mission," Gerstenmaier said.

There, fixed it!

Regards,

[Cincinatus' Wife]

Lunar propellent: Water ice = oxygen and hydrogen; the most powerful rocket fuel available.

http://www.nasa.gov/topics/technology/hydrogen/hydrogen_fuel_of_choice.html