CAPE CANAVERAL, Fla. — NASA's yearlong spaceman, Scott J. Kelly, took his first spacewalk Wednesday just hours before setting a new U.S. flight record.
Kelly and Kjell Lindgren tackled a long overdue list of maintenance chores outside the International Space Station. They removed insulation from an electronic switching unit and covered an antimatter and dark matter detector, before starting a grease job on the station's big robot arm and some cable routing for a future docking port.
Kelly's identical twin, Mark, a retired astronaut, urged his brother to be careful but still have fun outside.
"Don't forget to take a good selfie!" Mark said via Twitter. He commanded the mission that delivered the antimatter-hunting Alpha Magnetic Spectrometer in 2011; it was the next-to-last shuttle flight. Scientists wanted the device covered with a thermal blanket to keep it cooler and prolong its life.
As Lindgren gathered up cables 250 miles above Earth, Mission Control asked him to call out the serial number on one and wondered whether he knew when it was put there. He didn't.
"You were probably still in diapers," Mission Control informed him. "I'm still in diapers," he replied with a chuckle, getting a big laugh in Houston. (Astronauts wear diapers during lengthy spacewalks.)
Earlier in the morning, the spacewalk was held up slightly after Lindgren inadvertently switched on the water flow in his suit too soon. Mission Control wanted to make certain the suit would be safe, before giving the all-clear. Water is needed to cool the suit; a malfunction two years ago caused a spacewalker's helmet to flood and almost drowned him.
A second spacewalk — to further whittle down the chore backlog — will be conducted Nov. 6 by the same two men.
In the wee hours of Thursday morning, just after midnight Eastern time, Kelly will break the American record for NASA's longest single space shot. That 215-day record — more than seven months — was set in 2007.
In this July 12 photo made available by NASA, astronaut Scott Kelly poses for a selfie photo in the "Cupola" of the International Space Station.
Photo Credit: Scott Kelly/NASA via AP
Kelly has been living at the orbiting lab since March. He'll remain there until March 2016. Russian Mikhail Kornienko is also part of the one-year experiment in preparation for eventual Mars expeditions, although it will fall shy of the 14-month world record held by a fellow cosmonaut, Valery Polyakov, who lived on Russia's old Mir space station in 1994 and 1995.
Former space station resident Michael Lopez-Alegria has been counting down the days until Kelly surpasses his record of 215 days, eight hours and 22 minutes. "The countdown clock is ticking," he said last week in a tweet.
President Barack Obama already has relayed congratulations. In a phone call last week, Obama told Kelly his feat is "nothing to sneeze at." Kelly assured the president that even though he feels like he's been in orbit a long time and still has a long way to go, "it shouldn't be a problem getting to the end with enough energy and enthusiasm to complete the job."
"Records are made to be broken," Kelly noted.
Earlier this month, Kelly broke the U.S. record for the most accumulative time in space: 383 days and counting over four missions. It will total 522 days by the time he returns to Earth, well short of the Russian record.
