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WITHOUTER SPACE   The space shuttle Endeavour is shown docked with the International Space Station on May 23, 2011, in this photo by NASA astronaut Paolo Nespoli.  With recent problems plaguing the Russian space program — namely, two of their most recent rocket launches exploding after launch — the $100 billion ISS, which can be operated remotely — may soon have to go without a crew for the time being.  (Photo: Nespoli / NASA via NPR)