Space Adventures, the company that sent the first space tourists into orbit is offering future clients the chance to do a space walk. The optional excursion will cost $15m (£8m) on top of the $20m cost for the flight. So what do you get for this? Private space explorers will get a 1.5 hour accompanied extra-vehicular-activity (EVA) outside the International Space Station (ISS). The EVA would lengthen a stay on the ISS from 10 days to between 16 and 18 and would require additional training. Eric Anderson, president of and CEO of Space Adventures said, “those with enough money would get to “hang out” outside the space station with a trained cosmonaut as a guide”.