NASA astronauts Suni Williams and Butch Wilmore, both Expedition 71 Flght Engineers, make pizza aboard the International Space Station’s galley located inside the Unity module NASA Johnson ...

Four Expedition 70 crewmates join each other inside the International Space Station’s Unity module for Christmas Eve festivities.

PHOTO: Astronauts Suni Williams and Butch Wilmore, both Expedition 71 Flight Engineers, make pizza aboard the International Space Station's galley located inside the Unity module, Sept. 9, 2024.

Expedition 58 crew members David Saint-Jacques, Anne McClain, and Oleg Kononenko open stockings on Christmas Day inside the ISS Unity module. Image Credit: NASA ...

In this image released by NASA, NASA astronauts Suni Williams and Butch Wilmore, both Expedition 71 Flight Engineers, make pizza aboard the International Space Station's galley located inside the ...

STS-98 brought up the Destiny Module and attached it to the forward side of Unity. STS-100 brought up the Canadarm2 - which was crucial for constructing the station.

Russia's Nauka module is seen docked to the Zvezda module's Earth-facing port on the International Space Station on July 29, 2021. The Soyuz MS-18 crew ship (center) is docked to the Rassvet module.

The move to the Unity module is a temporary one, however, as Harmony will eventually move in front of the U.S. Destiny laboratory, a spot currently occupied by Discovery.