(Update: Concluded) Space Station crew preps for July 21 spacewalk: Watch live

The International Space Station (ISS) crew members are gearing up for a spacewalk on Thursday, July 21. Expedition 67 Commander Oleg Artemyev of Roscosmos and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) will exit the Poisk module at around 10 a.m. to begin the six-and-a-half-hour excursion to outfit the European robotic arm attached to the Nauka multipurpose laboratory module.

According to NASA, the main objective of the July 21 spacewalk is to install platforms and workstation adapter hardware near the 37-foot-long manipulator system mounted to the Nauka module. The duo also will relocate the arm's external control panel, replace a protective window on the arm's camera unit, and extend a Strela telescoping boom from Zarya to Poisk to facilitate future spacewalks.

Artemyev and Cristoforetti will deploy 10 nanosatellites designed to collect radio electronics data during the spacewalk, which will be the 251st in support of station assembly, maintenance, and upgrades.

The upcoming spacewalk will be the sixth for Artemyev and the first for Cristoforetti, who will become the first European female spacewalker and the fourth European astronaut to conduct a spacewalk in a Russian spacesuit.

Live coverage of tomorrow's spacewalk will begin at 9:30 a.m. EDT on NASA Television, the NASA app, and the agency's website.

Update 1

Spacewalk is underway to outfit the European Robotic Arm on the space station's Nauka laboratory. The duo began their spacewalk today at 10:50 am ET.

LIVE: Astronaut Samantha Cristoforetti and cosmonaut Oleg Artemyev perform a spacewalk to continue preparing the @Space_Station's European robotic arm for future work: https://t.co/mzKW5uV4hS pic.twitter.com/kIMchOaOgJ

— NASA (@NASA) July 21, 2022

Update 2

Artemyev and Cristoforetti concluded their spacewalk at 5:55 p.m. EDT after 7 hours and 5 minutes, completing all but one of their major objectives. Additional spacewalks are planned to continue outfitting the robotic arm and to activate Nauka's airlock for future spacewalks.