美国总统布什曾说:"It is time for America to take the next steps. Today I announce a new plans to explore space and extend a human presence across our solar system. We will begin the effort quickly using existing programmes and personnel. We'll make steady progress, one mission, one voyage, one landing at a time. The last man to set a foot on a lunar surface said this as he left: 'We leave as we came, and God willing as we shall return with peace and hope for all mankind. America will make those words come true."(“美国现在到了迈出探索宇宙的下一步的时候了。今天我宣布我们探索广阔宇宙的新计划。我们将利用现有的人力物力,确定明确的计划。那名最后踏足月球的人曾这么说:我们离开了就像我们来的时候一样,上帝知道我们会带着全人类的希望回来。是的,我们会让这句话成真。”)
美国总统布什说:"With the experience and knowledge gained on the moon we will then be ready to take the next steps of the space exploration, human missions to Mars and to worlds beyond."(“我们要利用在月球上得到的经验和知识,为人类登陆火星,探寻更加遥远的宇宙做好充分的准备”)