NASA astronauts Jessica Meir and Anil Menon began a spacewalk Thursday to install hardware on the International Space Station power system [1].

The mission is critical for the station's longevity because it prepares the facility for the International Space Station Roll-Out Solar Array, known as IROSA [1, 3]. These upgrades strengthen the power grid to support evolving research and operational needs.

The operation began at 5:35 p.m. IST on Thursday, Aug. 6 [4]. Live coverage of the event started earlier that day at 4 p.m. IST [4]. The astronauts are expected to spend approximately six and a half hours outside the station [1].

For Anil Menon, the mission marks his first spacewalk [1]. Jessica Meir is conducting her sixth overall spacewalk [1], though some reports indicate this is her third of the current year [2].

The primary objective for the pair is the installation of hardware on the ISS 3B power channel [1, 3]. This specific hardware is necessary to integrate the IROSA panels, which provide more efficient energy collection than the original arrays.

Working in the vacuum of space requires precise coordination and specialized equipment. The astronauts must manage their oxygen and temperature levels while maneuvering around the exterior of the station to ensure the power channel is correctly configured [1, 3].

The mission is critical for the station's longevity.

The transition to IROSA represents a vital modernization of the ISS power infrastructure. By augmenting the existing solar arrays, NASA ensures the station can maintain its power budget as older components degrade and new, energy-intensive scientific experiments are brought on board.