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IIRC, the USSR had really bad luck with the various probes they sent to Mars. A couple crashed, and I think one or two got off course and were lost.

• dmix 4y ago
  Idk about Mars but that was definitely the experience on Venus (which was far more understandable since they were sending metal balls that would be crushed under pressure within minutes). Only survived about 2-3/10.
  • midasuni 4y ago
    Feels like Mars eats most probes. Mars96 and Mars polar observer come to kind immediately. I believe my name was on a cd on one of them as an early internet thing you could do. Never made it to mars.
    • dmix 4y ago
      At least your name is floating on a disc in space that's still pretty cool.
  • deleted 4y ago
    [deleted]
  • krylon 4y ago
    But I wouldn't count the Venus probes as failures. Initially, they had no idea what the conditions would be like, so they built more and more robust probes until they did manage to land on the surface without dying immediately.