A pair of NASA astronauts on Monday morning plan to exit the International Space Station in an effort to secure a rail car that is stuck in the wrong place.
The Mobile Transporter, which is holding the station’s 58-foot robotic arm and other equipment, last week stopped rolling on rails just four inches from a work site near the center of the station orbiting 250 miles up.
NASA and its partners want the transporter locked down before the planned Wednesday morning arrival of a Russian Progress resupply ship, which will require the station to maneuver into position and then absorb the force of the docking Progress vehicle.
Watch it live on NASA TV.
Kelly will be the lead spacewalker and wear a suit with red stripes. Kopra will wear an all-white suit.
The spacewalk will be Kelly’s third since he began a yearlong mission in March, and the second of Kopra’s career. It will be the 191st supporting assembly and maintenance of the orbiting research laboratory.
The latching of the Mobile Transporter is not expected to present much difficulty. If it is done quickly, the two astronauts will tackle additional tasks.
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