Captain Mark Kelly talks space travel
02:41Captain Mark Kelly shares the latest from his twin brother, astronaut Scott Kelly, who just went on an unscheduled space walk and who will be spending a whole year in orbit 230 miles above the earth.
Captain Mark Kelly shares the latest from his twin brother, astronaut Scott Kelly, who just went on an unscheduled space walk and who will be spending a whole year in orbit 230 miles above the earth.
