As far as we can see now, Tianwen-2 mission will be launched by new CZ-9 ricket during year 2028-2030, by official source.
Tianwen-2 will take a small step forward. It's probe will collect soil sample from Mars. A small ascender module attached to the lander will send the sample up to the orbiter, then the orbiter module will go back to earth, and return a capsule containing the soil sample.
The whole plan is like the Chang'E-5 mission but much challenging for the long distance and the new rocket which the task based on.
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天问二号计划于2028年至2030年左右搭载长征九号运载火箭从海南文昌航天发射场发射，翌年抵达火星。轨道器/返回舱与巡视器/上升器/着陆器分离，巡视器/上升器/着陆器在火星表面进行推动力软着陆。巡视器在火星表面采集岩土样本，上升器再从火星表面发射升空进入火星近轨道，经过变轨后与轨道器/返回舱交会对接，将样本输推进返回舱中。轨道器再次点火，进入火星-地球转移轨道。年后接近地球时，返回舱再入地球大气层，在中国境内内蒙古进行软着陆，带回火星岩土样本。
Tianwen-2 will take a small step forward. It's probe will collect soil sample from Mars. A small ascender module attached to the lander will send the sample up to the orbiter, then the orbiter module will go back to earth, and return a capsule containing the soil sample.
The whole plan is like the Chang'E-5 mission but much challenging for the long distance and the new rocket which the task based on.
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天问二号计划于2028年至2030年左右搭载长征九号运载火箭从海南文昌航天发射场发射，翌年抵达火星。轨道器/返回舱与巡视器/上升器/着陆器分离，巡视器/上升器/着陆器在火星表面进行推动力软着陆。巡视器在火星表面采集岩土样本，上升器再从火星表面发射升空进入火星近轨道，经过变轨后与轨道器/返回舱交会对接，将样本输推进返回舱中。轨道器再次点火，进入火星-地球转移轨道。年后接近地球时，返回舱再入地球大气层，在中国境内内蒙古进行软着陆，带回火星岩土样本。
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