Astronauts Repair Space Station's Robotic Arm Live at 28,000 kmph

On June 30, 2026, NASA astronauts Chris Williams and Jessica Meir embarked on a crucial spacewalk, designated U.S. Spacewalk 95, to repair the International Space Station's (ISS) Canadarm2 robotic arm. This highly anticipated extravehicular activity (EVA) aims to replace a malfunctioning wrist joint that experienced issues on May 27, 2026, when it drew elevated motor current and failed to move as expected during normal operations. The repair is considered vital as Canadarm2 plays an indispensable role in the ISS's day-to-day functions, including capturing visiting cargo vehicles, moving large pieces of equipment, and assisting astronauts during maintenance tasks. The spacewalk officially commenced at 8:20 a.m. EDT (5:50 p.m. IST) and is expected to last approximately six and a half hours. Live coverage of this intricate operation began earlier at 7 a.m. EDT (4:30 p.m. IST) on NASA+, Amazon Prime, Netflix, and the agency's YouTube channel, allowing a global audience to witness the astronauts' work in real-time. Williams, designated as crew member 1, is identifiable by the red stripes on his spacesuit, while Meir, crew member 2, is wearing an unmarked suit. Inside the station, fellow NASA astronaut Jack Hathaway and ESA (European Space Agency) astronaut Sophie Adenot are providing critical support, assisting the spacewalkers with their suits and meticulously maneuvering the Canadarm2 into the precise position required for the repair. The Canadarm2, a 57.7-foot (17.6-meter) long robotic arm, has been an integral component of the ISS since its installation on April 26, 2001. Its longevity, exceeding 25 years of continuous operation, underscores its robust design. NASA and the Canadian Space Agency (CSA) collaboratively investigated the May 27 malfunction and determined that a spacewalk was necessary to replace the faulty wrist joint with a spare already stored aboard the space station. Such repairs are routine and expected for hardware of this age, as the system was designed with replaceable components and planned maintenance in mind. Throughout the entire repair operation, the International Space Station, with the astronauts attached, is hurtling through space at an astonishing speed of approximately 28,000 kilometers per hour (17,500 mph). This incredible velocity is essential to maintain its stable low Earth orbit, preventing it from being pulled back down to Earth by gravity. At this speed, the ISS completes one full orbit around Earth roughly every 90 to 93 minutes, allowing astronauts onboard to witness about 16 sunrises and sunsets each day. The repair, therefore, is a testament to human ingenuity and precision, performed in the challenging environment of microgravity while continuously circumnavigating the globe at hypersonic speeds. This spacewalk marks the second time Williams and Meir have performed an EVA together this year, and it is the 280th spacewalk in support of the space station's assembly, maintenance, and upgrades. The successful repair of Canadarm2 is crucial for ensuring the continued operational capability of the ISS, which serves as a unique orbital research laboratory and a symbol of international collaboration in space exploration. For an Indian audience, this news highlights global scientific and technological advancements, fostering interest in space science and international partnerships, areas where India itself has made significant strides.

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