NASA Astronauts Begin Spacewalk for Maintenance and Science

NASA astronauts Suni Williams and Butch Wilmore began a spacewalk at approximately 7:43 a.m. EST to remove a radio frequency group antenna assembly from the station’s truss, collect samples of surface material for analysis from the Destiny laboratory and the Quest airlock to see whether microorganisms may exist on the exterior of the orbital complex, and prepare a spare elbow joint for the Canadarm2 robotic arm. More

(Source: NASA - Feb 1)