Who doesn't like their hair open ... the International Space Station (ISS), Trump humorously referred to Williams as "the woman with the wild hair" and praised her full head of curls.

In microgravity space, the movement of hair is anything but Earth-like. Having no gravity with which to tether it, hair simply floats freely around the heads of astronauts. There is no gravity ...

So, why will it be an exception for women in space ... Sunita Williams' hair, saying, “I see the woman with the wild hair, good, solid head of hair she's got. There's no kidding, there's ...

NASA/AFP via Getty Images While there are no scientific studies that link spaceflight to graying hair, NASA has previously suggested that spending time in space can cause “significant ...

Williams, whose 'gaunt' appearance previously sparked health concerns, appeared notably different – with a long head ... is no direct research into whether time spent in space causes hair ...

Williams, whose 'gaunt' appearance previously sparked health concerns, appeared notably different – with a long head ... is no direct research into whether time spent in space causes hair ...