Bizarre! After One Year in Space, Astronaut Scott Kelly Now Has Different DNA Than His Identical Twin Brother

News Staff : Mar 15, 2018
CBS Local, Denver

[CBS Local, Denver] While Scott Kelly's height and 93 percent of his DNA returned to normal after returning to Earth, NASA confirmed that seven percent of his genes have remained changed and may stay that way... Click here to read. (Photo: the Kelly twins/NASA.gov)