NASA is weighing a major decision regarding the return of astronauts Sunita Williams and Butch Wilmore from the International Space Station (ISS). The agency is considering using SpaceX’s Crew Dragon for their return in February 2025 instead of Boeing’s Starliner due to ongoing safety concerns with the latter.
Technical Issues and Extended Mission
The astronauts were transported to the ISS in June by Boeing’s Starliner, marking the spacecraft’s first crewed mission. Initially planned for an eight-day mission, their stay has been extended due to technical issues with Starliner’s propulsion system, including thruster failures and helium leaks. Recent tests revealed that overheating thrusters have warped Teflon seals, impairing propellant flow and weakening thrust, raising concerns about the spacecraft’s safety for their return.
Possible Switch to SpaceX
NASA’s internal debate centers around whether to risk using Starliner or opt for the safer alternative of Crew Dragon. If the decision is made to switch, Boeing would configure Starliner for an uncrewed return. This move would be a significant setback for Boeing, which has invested $1.6 billion in Starliner’s development, including $125 million for the current test mission.
Crew Dragon Contingency Plan
NASA is discussing plans with SpaceX to reserve two seats on the Crew-9 mission, scheduled for September 2024, for Williams and Wilmore. The Crew Dragon would be configured to carry only two passengers to allow space for their return. NASA is expected to make a final decision on the matter next week.