China is progressing its plans for the Tianwen-3 Mars Sample Return mission, setting a 2028 launch window that places it in direct temporal competition with SpaceX’s ambitious Starship Mars transport timeline, while also preparing a student-led spacecraft for a 2029 flyby of the near-Earth asteroid Apophis.
What Happened
According to Hou Zengqian, the project’s Chief Scientist and a Chinese Academy of Sciences academician, Tianwen-3 has entered the prototype development phase. The mission is targeting a 2028 launch aboard two Chang Zheng 5 vehicles, with surface sampling scheduled for 2030 and a return to Earth expected around 2031. This architecture involves a lander drilling up to two meters below the Martian surface to collect approximately 500 grams of samples, which are then transferred via a small launcher to an awaiting orbiter for the journey home.
Why It Matters
The 2028 target date for Tianwen-3 is significant for the SpaceX ecosystem as it aligns with the current projected timeline for Starship’s first uncrewed Mars missions. While SpaceBytes primarily covers the SpaceX ecosystem, the parallel development of a Chinese Mars Sample Return capability highlights the intensifying competition for Mars access and scientific primacy. Tianwen-3 could become the world’s first mission to return Martian samples, posing technical challenges distinct from lunar sampling, such as preserving primordial information from subsurface radiation and oxidation.
This development comes as China integrates crewed and robotic missions under the China Manned Space Agency (CMSA), which has taken over oversight of uncrewed robotic lunar missions from the China National Space Administration (CNSA). The samples will initially be analyzed at the Deep Space Exploration Laboratory in Anhui province before distribution to scientists.
The Bottom Line
China is moving forward with the Tianwen-3 mission to return Martian samples by 2031, creating a direct competitive benchmark for SpaceX’s Starship Mars ambitions, while simultaneously expanding its launch capabilities and reorganizing its lunar exploration management structure.