ISS spacewalk delayed until late July due to spacesuit issues
What's the story
NASA has postponed the next scheduled spacewalk at the International Space Station (ISS) until late July, due to a water leak in astronaut Tracy Caldwell Dyson's spacesuit. The leak, which occurred during a spacewalk on June 24, 2024, forced Dyson along with astronaut Mike Barratt to end their extravehicular activity (EVA) after just 31 minutes. They were supposed to work for about 6.5 hours. The issue was traced back to an "umbilical," a line that connects and services the suit.
Testing
Investigation and preparations for next spacewalk underway
Bill Spetch, Operations Integration Manager for NASA's International Space Station Program, has stated during a press conference that the delay until the end of July is to allow time to understand what caused the leak. The upcoming spacewalk will again feature Dyson and Barratt. Their tasks will involve "hardware replacements and installations, preparations for future upgrades on science gear, and photographic inspections of station pipelines," according to a NASA blog post.
Past incidents
History of coolant leaks disrupting ISS spacewalks
This is not the first instance of coolant leaks interrupting ISS spacewalks. In March 2022, European Space Agency (ESA) astronaut Matthias Maurer noticed water accumulating in his helmet after an extravehicular activity, leading to a seven-month hiatus in spacewalks. Similarly, ESA astronaut Luca Parmitano experienced a dangerous leak in 2013, when water started filling his helmet during a spacewalk.
Upgrade delay
Spacesuit upgrades delayed despite recurring leaks
The spacesuits currently in use by astronauts are based on designs over 40 years old and are due for significant upgrades. However, Collins Aerospace, the company contracted by NASA in 2022 to develop new spacesuits at an estimated value of $3.5 billion, has decided to "descope" its work on spacesuit development for the ISS. The company confirmed this decision after a thorough evaluation with NASA to descope Exploration Extravehicular Activity Services (xEVAS) task orders.
Extended stay
Astronauts remain on ISS due to Boeing Starliner issues
Astronauts Sunita Williams and Butch Wilmore are currently remaining on the ISS due to problems with the Boeing Starliner spacecraft. The spacecraft developed helium leaks and thruster issues after its arrival at the ISS on June 6, causing repeated delays in the astronauts' scheduled departure. Despite the issues, NASA has denied recent claims of Starliner crew being stuck in space. The agency claims that Williams and Wilmore can undock and return home if necessary, with ample supplies onboard.