Cape Canaveral - Astronaut Scott Kelly's identical twin pulled a fast one on Nasa right before his brother blasted off on a one-year space station mission.
Nasa Administrator Charles Bolden told Kelly on Monday that he almost had a heart attack when his brother showed up launch morning without his usual moustache. Bolden says that's the only way he could tell the two apart. Mark Kelly, a retired astronaut, was still clean shaven on Monday as he told Bolden about the medical experiments planned on both twins over the coming year.
Scott Kelly arrived at the International Space Station late last week following a launch from Kazakhstan. He will remain on board until next March, as will a Russian cosmonaut. It will be Nasa's longest spaceflight ever.