Researchers have tossed around theoretical calculations of using just aluminum and water for rocket propellant in the past.
研究者在过去辗转不安的进行理论计算，仅仅只用铝和水作为火箭燃料。
2
The asteroid would need to posses water so that colonists could extract oxygen and hydrogen for rocket fuel.
这颗小行星将需要具备水使殖民者可以提取氢和氧的火箭燃料。
3
Proof that the moon is dynamic and not a dry, desolate world offers hope for a possible future astronaut outpost where water on site could be used for drinking or making rocket fuel.