It 's an important riddle to solve , as researchers would like to use lunar water to manufacture rocket fuel for future deep-space missions .
这仍然是一个有待解决的谜团,因为研究人员希望用月球水制造火箭燃料用于将来的深空探测。
The discovery is believed to relate to mass and how objects obtain it -- a persistent riddle to experts and one of the most sought-after answers in all of physics .