NASA Cancels Mars Sample Return Mission
The $11 billion project concludes as China prepares a competing sample retrieval mission for 2028.
Updated on Oct. 21, 2026 in Space
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NASA has officially canceled its multi-billion dollar mission to retrieve rock samples from Mars, citing the project's financial burden. Meanwhile, China has announced plans to launch its own mission to collect Martian samples in 2028.
Why it matters
The cancellation ends a project designed to return samples that might contain evidence of ancient microbial life. This shift in the Mars exploration landscape accelerates the global race to retrieve extraterrestrial material, with China positioning its upcoming mission to utilize techniques proven during its recent lunar sample collection.
The Perseverance rover has set a new record for extraterrestrial distance, reaching 45.22 km and surpassing the previous 45.16 km mark held by Opportunity. Perseverance has already sealed a rock fragment in a container for potential return, though retrieval options remain unfinalized.
The players
NASA
The U.S. federal agency responsible for space exploration and the primary developer of the Perseverance rover mission.
Perseverance
A robotic rover currently active on Mars that has traveled 45.22 km and collected samples for potential return to Earth.
China
A national space power that operates the Tianwen and Chang'e programs to conduct independent robotic exploration of the moon and Mars.
Opportunity
A long-lived legacy rover that held the prior extraterrestrial distance record of 45.16 km.
The details
NASA originally designed the retrieval mission to involve a lander, a small rocket, and an orbiter to transport samples through the Martian atmosphere—which is only 1% as dense as Earth's. China intends to adapt technology from its Chang'e-6 lunar mission to manage the descent, surface collection, and ascent phases of its Tianwen-3 retrieval attempt. Perseverance, currently operating on the surface, continues to conduct geological analysis, including the July 2024 discovery of rock formations featuring distinct leopard-like spots.
Timeline
1997: The U.S. deployed the Sojourner rover, the first of its kind to operate on Mars.
2021: The Perseverance rover successfully landed on the Martian surface.
May 2022: China's Zhurong rover ceased all communication after traveling 1.9 km.
July 2024: Perseverance identified a rock with potential indicators of past life.
2028: China is scheduled to launch its Tianwen-3 mission to attempt a Martian sample return.
The Tech Race
The cancellation of the NASA mission creates a significant opening in the international competition for extraterrestrial material. China now aims to replicate the success of its 2024 Chang'e-6 lunar sample mission by applying those established retrieval protocols to its 2028 Tianwen-3 mission.
The immediate consequence is that the planned return of geological samples to Earth for high-resolution laboratory analysis is indefinitely delayed. For the scientific community, this changes long-term research schedules as focus shifts to future mission timelines and potential collaborative efforts.
The takeaway
The end of NASA's $11 billion effort shifts the burden of proof for Martian biological discovery to the upcoming 2028 Chinese mission. Observers should track updates on the Tianwen-3 launch schedule to see if it can successfully adapt lunar sample-return technology to the much harsher Martian environment.
Further reading
Learn more about the latest developments in international planetary exploration in Space.
Source note: This article includes information reported by 조선일보.
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