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Half a century later, returning to the moon is overdue, i would hope that it is a sustained effort, a long-term national commitment, one that also involves international partnerships and public-private collaborations. A multidimensional lunar program would be quite exciting. Apollo 11 landed on the moon five years after the first American robotic probe reached the surface. And this is an ambitious goal in the foreseeable future that rallies science, technology and the human spirit together.