FOG BLOG SCIENCE LOG: NASA ASTRONAUTS DO SPACEWALK TO CONTINUE ISS UPGRADES:

Astronauts Mike Hopkins and Victor Glover Jr. spent their Saturday conducting a spacewalk outside of the International Space Station.

The spacewalk, which assisted with continued upgrades to the orbiting laboratory, began at 8:14 a.m. ET and ended at 3:01 p.m. ET, lasting for six hours and 47 minutes.

Glover and Hopkins arrived on the space station in November as part of the NASA-SpaceX Crew-1 mission. This will be Glover's fourth spacewalk and the fifth for Hopkins.

During the spacewalk, Glover was crew member 1 wearing the red striped suit and Hopkins was crew member 2 in the non-striped suit. Hopkins' helmet included a high-definition camera for crystal clear views of his perspective throughout the spacewalk.

Hopkins and Glover vented early ammonia system jumper cables and relocated one of them and reconnected it to the current cooling system for more efficiency. Ammonia is part of the station's cooling system.

Building on tasks they completed together during their spacewalk on January 27, the two NASA astronauts also connected cables for the European Space Agency's Columbus module's Bartolomeo platform and replaced a cable for an amateur radio system, according to the agency. Bartolomeo can host external payloads.