Remember Robonaut2, the gold-headed robot that first flexed its biceps back in February? He's been called up -- way up. NASA has given him a one-way ticket to the International Space Station aboard the Space Shuttle Discovery on a departure that's currently scheduled for September. It's not entirely clear what he'll be doing up there beyond making awe-inspiring poses like the one shown above, but he is slated to help during spacewalks and will