Having an abundance of water on the moon would make it easier to set up a base camp for astronauts by providing drinking water and an ingredient for rocket fuel.

月球上有丰富的水，可以使为太空人建立基地营比较容易，因可提供饮用水和火箭燃料的一种成分。

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Colonel John Stapp rides a rocket sled at Edwards Air Force Base in California. Credit: US Air Force.

照片拍摄自加利福尼亚州爱德华兹空军基地，美国空军上校约翰·斯·塔普骑坐在火箭雪橇上。

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The HTV-2 - shaped like the tip of a spear - took off atop a Minotaur IV rocket from Vanderberg Air Force Base in California early on Thursday.

周四早些时候，形似矛尖的HTV - 2便从加州范登堡空军基地发射的“牛头人4号”火箭前端起飞。

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Some cite the velocity of the monetary base that existed in the past and assume it is still relevant, but the You Tube rocket of the base rising into the stratosphere is matched by an offsetting plunge of its velocity reaching all the way to China.

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There was no immediate report of casualties, said CNN Senior International Correspondent Nic Robertson, who was at the base when the rocket struck.

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It saw the Landsat-8 mission hurtle skywards on an Atlas rocket from the US Air Force base at Vandenberg shortly after 10:00 local time (18:00 GMT).

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