Video: Narrated preview of Jan. 6 spacewalk

The 10th dedicated cargo delivery mission by SpaceX’s Dragon spacecraft, and the first to liftoff from launch pad 39A at NASA’s Kennedy Space Center, will carry more than 5,000 pounds of equipment to the International Space Station.

Shane Kimbrough and Peggy Whitson, setting a new record as the world’s most experienced female spacewalker, floated outside the International Space Station Thursday and continued work to set up a second docking port for U.S. crew ferry ships. They also installed an upgraded computer relay box and protective shielding before calling it a day.

Two astronauts floated outside the International Space Station early Tuesday and replaced one of the grapple fixtures on the end of the lab’s robot arm, the first of two excursions over the next week to complete a complex overhaul that began with a pair of spacewalks last October.