2K views · 51 reactions | The longest spacewalk ever by American astronauts took place in 2001 and lasted almost nine hours. Do you know how long the very first U.S. spacewalk lasted? | NASA's Johnson Space Center | Facebook

Today’s #spacewalk officially concludes at 2:41 p.m. EDT. NASA astronauts Jeff Williams and Kate Rubins completed all of the planned tasks plus a few extra “get-ahead” operations. During their 6 hour and 48 minutes spacewalk, the duo successfully retracted a thermal radiator, installed two enhanced high definition cameras on the station’s exterior and tightened bolts on a joint that enables one of the station’s solar arrays to rotate. Find out more: http://go.nasa.gov/2c84Mbl | NASA - National A

After 6 hours and 49 minutes, today’s #spacewalk officially ended at 2:36 p.m. EDT. NASA astronauts Randy Bresnik and Joe Acaba completed all planned tasks as well as a few get-ahead procedures. In addition to installing a new HD camera on the outside of the International Space Station, the pair also replaced a fuse on the Dextre robotic arm extension. Get more details on their work in the vacuum of space: http://go.nasa.gov/2xULjrQ | NASA - National Aeronautics and Space Administration