As far as I am aware, ESA has not achieved a successful martian landing yet. Why is it still a good idea to try with full-scale rover, weighting more than Opportunity and Spirit (though less than Curiosity, which indeed had huge landing experience to build on - unlike Rosalind Franklin).
closed as primarily opinion-based by GdD, Mefitico, Dr Sheldon, Fred, Mark Omo Feb 9 at 16:10
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