Stock Photo - United States Vice President Mike Pence speaks before US President Donald J. Trump signs the Presidential Space Directive - 1, directing NASA to return to the moon, alongside President Donald Trump, left, Acting NASA Administrator Robert Lightfoot, second left, NASA astronaut Peggy Whitson, third from left, NASA astronaut Christina Koch, right, and members of the Senate, Congress, and commercial space companies in the Roosevelt Room of the White House in Washington, Monday, December 11, 2017. Mandatory Credit: Aubrey Gemignani / NASA via CNP ......- NO WIRE SERVICE - Photo: Aubrey Gemignani/Consolidated/dpa. - Washington/US

Stock Photo: United States Vice President Mike Pence speaks before US President Donald J. Trump signs the Presidential Space Directive - 1.

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