NASA Astronauts Meir & Williams on Spacewalk | International Space Station

NASA Astronauts Meir & Williams on Spacewalk | International Space Station

NASA astronaut Chris Williams is pictured outside the International Space Station during a spacewalk. It was William’s first spacewalk of his career.

NASA astronaut Jessica Meir installs a roll-out solar array modification kit to the exterior of the International Space Station.

NASA astronauts Chris Williams (left) and Jessica Meir (right) are pictured installing a roll-out solar array modification kit to the International Space Station.

NASA astronauts Jessica Meir and Chris Williams are pictured outside the International Space Station.

NASA astronaut Chris Williams is pictured outside the International Space Station.

A view peering down a pair of the International Space Station's roll-out solar arrays, photographed during a spacewalk conducted on March 18, 2026.

NASA astronaut Jessica Meir waves at the camera

Expedition 74 insignia

Expedition 74 Flight Engineer and NASA Astronaut Jessica Meir: "Last week, I had the privilege of conducting my fourth spacewalk, venturing out to deploy a bracket to hold a new solar array to augment the power system of the International Space Station. This spacewalk felt even more special than my previous ones because I shared the experience with a first-time spacewalker, NASA astronaut Chris Willaims! It is a tremendously powerful feeling to pass the torch to the next generation of explorers that will keep this space station running."

NASA astronauts Jessica Meir and Chris Williams concluded their spacewalk outside the International Space Station at 3:54 p.m. EDT on Wednesday, March 18, 2026. It was Williams’ first spacewalk and Meir’s fourth. It represented the 278th extravehicular activity (EVA) in support of space station maintenance, upgrades, and assembly.

During the approximately seven-hour and two-minute spacewalk, Meir and Williams completed their primary objectives. This included preparing the 2A power channel. The work will enable the future installation of roll-out solar arrays to provide additional power for the orbiting laboratory, supporting critical systems and its safe, controlled deorbit.

The duo also completed additional tasks, including installing a 2A power system jumper cable. The remaining tasks, including installing a lens cover on a camera attached to the station’s Canadarm2 robotic arm and swabbing for microorganisms near the Quest airlock, will be moved to a future spacewalk.

Follow Expedition 74:
https://blogs.nasa.gov/spacestation/

Expedition 74 Crew
Station Commander: Sergey-Kud Sverchkov (Russia)
Roscosmos (Russia) Flight Engineers: Andrey Fedyaev, Sergei Mikaev

European Space Agency Flight Engineer: Sophie Adenot

NASA Flight Engineers: Jessica Meir, Jack Hathaway, Chris Williams

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Image Credits: NASA's Johnson Space Center, J. Meir, C. Williams, J. Hathaway 

Date: March 18, 2026

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