USA Today: Kelly twins perfect subjects for astronaut study

So far, it’s been a long battery of tests — ultrasounds, cognitive experiments and assorted, ahem, sample collections — for Mark Kelly, a former NASA shuttle commander and husband of former congresswoman Gabrielle Giffords.


“A team of people recently came out to Tucson to gather some ‘data,’ which consisted of about 30 tubes of blood and other bodily fluids. I tweeted a picture of it,” Kelly said.


At the same time, his identical twin brother, Scott, an astronaut currently aboard theInternational Space Station (ISS), has been undergoing similar tests, but in zero gravity.


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