NASA delayed SpaceX's Crew-10 launch to late March 2025, extending astronauts Wilmore and Williams' ISS stay due to spacecraft readiness, prioritizing safety and mission success.
FREMONT, CA: NASA has announced a delay in SpaceX’s Crew-10 mission, initially scheduled to bring new astronauts to the International Space Station (ISS) in February 2025. The mission is now set to launch no earlier than late March, extending the stay of astronauts Butch Wilmore and Suni Williams, who have already spent more time aboard the ISS than originally planned.The two astronauts, who arrived via Boeing’s Starliner spacecraft in June, will remain in orbit until late March or early April 2025.
Extended Mission Due to Technical Issues
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Wilmore and Williams were originally part of the first crewed test flight of Boeing's Starliner. The mission, expected to last about a week, became complicated after the spacecraft experienced technical issues en route to the ISS. NASA determined it was unsafe to return them aboard the Starliner and reassigned them to the Crew-9 mission, a standard ISS assignment.
Crew-9, which arrived at the ISS in September 2024, includes NASA astronaut Nick Hague and Russian cosmonaut Aleksandr Gorbunov. The team’s planned six-month rotation was scheduled to conclude in February 2025. However, the delay in Crew-10’s launch has pushed back the handover, extending the Crew-9 mission and Wilmore and Williams’ stay by several months.
Reason for the Delay
NASA and SpaceX explained that the delay is due to the need for additional processing on a new Dragon spacecraft intended for Crew-10. Officials evaluated various options, including using an existing Dragon spacecraft, but concluded that postponing the launch was the safest and most efficient choice. The extra time will allow SSpaceX to meet all mission requirements and ensure safety.
“Safety and thorough preparation are our priorities,” states NASA officials. The delay underscores the complexities of crew rotations and the challenges of ensuring readiness for human spaceflight missions.
Impact on Astronauts’ Stay in Space
The extended mission means Wilmore and Williams will spend about nine months in orbit, three months longer than typical ISS missions. While unplanned, extended stays are not unprecedented in spaceflight. For example, NASA’s Frank Rubio recently set the U.S. record for the longest continuous ISS stay at 371 days.
During their mission, Wilmore and Williams played a crucial role in station operations, including scientific research, maintenance, and preparations for future missions. Despite the challenges of an extended stay, they have demonstrated resilience and adaptability, continuing to inspire the next generation of space explorers.
Crew-10 and Future Missions
The Crew-10 mission, now targeting a late March 2025 launch, will include four astronauts who will replace the Crew-9 team. NASA’s collaboration with SpaceX on Crew-10 is part of its ongoing effort to ensure the smooth transition of crew rotations on the ISS while maintaining a focus on safety and mission success.
These missions are critical as NASA prepares for future exploration goals, including the Artemis program, which aims to return astronauts to the Moon and eventually send humans to Mars. The lessons learned from the Crew-9 and Crew-10 missions will help advance human spaceflight capabilities and ensure the success of future endeavors.
Looking Ahead
As NASA and SpaceX finalize preparations for Crew-10, the space agency also focuses on its long-term objectives, including returning astronauts to the Moon through the Artemis program and eventually sending humans to Mars. The experience gained from missions like Crew-10 and Crew-9 will be crucial in preparing for these more ambitious goals. Astronauts Wilmore and Williams remain aboard the ISS, continuing their vital work to advance science and technology in space.
The delay in the Crew-10 launch reminds the challenges of human spaceflight, where technical issues, logistics, and safety concerns can lead to unexpected changes in mission timelines. Despite the delay, NASA remains committed to ensuring the success of its space missions and the safety of its astronauts.

