NASA Cancels Mars Sample Return Mission
The agency cited the $11 billion estimated project cost as the reason for ending the retrieval mission.
Updated on Oct. 21, 2026 in Space
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NASA has officially canceled its Mars sample return mission, which sought to bring rock fragments back to Earth. The project was sidelined primarily due to the significant $11 billion financial burden associated with the mission design.
Why it matters
Scientists aim to recover Martian rock samples to search for evidence of past microbial life. The cancellation marks a major shift in how the U.S. space agency approaches planetary exploration and surface retrieval.
The cancelled plan relied on a lander, rocket, and orbiter to ferry samples, which carried an estimated $11 billion price tag. Mars features an atmosphere with just 1% of the density found on Earth.
The players
NASA
The United States government agency responsible for the nation's civilian space program and aeronautics research.
Perseverance
A robotic rover currently operating on Mars that has set the record for the longest distance driven on another planet.
Zhurong
A Chinese robotic rover that explored the Martian surface starting in 2021.
The details
NASA had planned to use a lander, small rocket, and orbiter to relay the samples, while its Perseverance rover has already collected and sealed rock fragments. Perseverance recently set a distance record of 45.22 km on the planet, surpassing the 45.16 km mark previously set by the Opportunity rover.
Timeline
1997: The U.S. sent its first Mars rover, Sojourner.
2021: Perseverance landed on the Martian surface.
May 2022: China's Zhurong rover stopped operating.
July 2024: Perseverance discovered a rock with potential signs of past life.
2028: China plans to launch the Tianwen-3 mission.
The Big Picture
The cancellation of the U.S. mission leaves China's upcoming Tianwen-3 mission as the primary development for Martian sample retrieval. This shift mirrors the progression of China's own exploration programs, such as the Chang'e-6 lunar sample collection conducted in 2024.
The cancellation delays the arrival of Martian materials that could have provided definitive evidence of past microbial life. Future scientific understanding of the Red Planet will now depend on alternative missions and international efforts.
The takeaway
While the return mission is off the table, the Perseverance rover continues to explore and document the Martian surface. Researchers will likely rely on the rover's ongoing data transmissions to study potential biological markers from afar.
Further reading
For more information on ongoing exploration, visit the Space section.
Source note: This article includes information reported by 조선일보.
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