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Home»Lifestyle»China aims to be 1st to bring samples back from Mars
Lifestyle

China aims to be 1st to bring samples back from Mars

EditorBy EditorDecember 13, 2024No Comments3 Mins Read
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China’s space agency could be the first to bring samples from Mars to Earth, in a plan that would return Martian rocks and sediment in 2031.

In a paper published in the November issue of the journal National Science Review, researchers from the Deep Space Exploration Laboratory and collaborating institutions within China laid out a plan for Tianwen-3, a two-spacecraft Mars lander mission planned by the China National Space Administration. In a September update at a space exploration conference, Jizhong Liu, the chief designer of Tianwen-3, said the mission is on track to launch in 2028.

According to Space News, Tianwen-3 will include a lander, an ascent vehicle, an orbiter and a return module; it also may use a helicopter and a six-legged robot for gathering samples at a distance from the lander.

In the National Science Review paper, Zengqian Hou of the Deep Space Exploration Laboratory and Chinese Academy of Geological Sciences reported that there are 86 potential sites being considered for the Tianwen-3 landing spot. Most are clustered in Chryse Planitia, a smooth plain in Mars’ northern equatorial region, and Utopia Planitia, the largest impact basin on Mars, where China landed a rover in 2021.

Related: Why can’t we see the far side of the moon?

These sites are promising for the key aim of the Tianwen-3 mission, which is to look for signs of past life on Mars, Hou and his colleagues wrote. The sites were chosen because they offer relatively forgiving landing topography and because rocks and sediment there might still preserve traces of ancient Martian life.

A 2028 launch would bring Tianwen-3 back to Earth in 2031. (A one-way trip between Earth and Mars takes between seven and 11 months, depending on the alignment of the planets on a given date.) Samples would be analyzed in multiple ways, Hou and his team wrote. These methods would include mass spectrometry, to determine their elemental makeup, and isotopic analysis, to look at the ratio of different versions of elements that might indicate the past presence of living organisms.

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If the Tianwen-3 mission remains on track, it will beat NASA and the European Space Agency (ESA) in bringing Mars rocks back to Earth by nearly a decade. NASA announced in April that the planned Mars Sample Return (MSR) mission, a joint effort between NASA and ESA, would be delayed until the 2030s. Under the current plan, the MSR lander would launch in 2035, and the sample-return mission wouldn’t occur until 2040.

China’s Chang’e-6 mission recently brought back the first-ever samples from the far side of the moon. An early analysis revealed the first evidence of volcanic activity on the lunar far side, suggesting volcanoes were erupting there as recently as 2.8 billion years ago.

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