Joan Johnson-Freese is a professor of national security affairs at the U.S. Naval War College in Newport, Rhode Island.
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17:20
India and NASA Home In on Mars
The Mangalyaan orbiter would make India the fourth space program to reach the Red Planet.
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Will China Blast Past America in Space?
China just ticked off another accomplishment in space: its first manned docking in orbit. Next stop…the Moon?