| http://www.w3.org/ns/prov#value | - The technical difficulties of trying to get to those two planets in particular is enough of a challenge that even getting there in the first place was a huge accomplishment at the time... and the fact that the U.S. Congress has cut NASA funding so significantly that it is currently impossible with the current NASA budget, unless you cut manned spaceflight entirely, to organize and set up any kind
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