From: niklas.holsti@tidorum.invalid   
      
   On 2021-02-21 3:34, JF Mezei wrote:   
       ...   
      
   > If you land in the direction opoposite of spin, is that called   
   > retrograde?   
      
      
   Why not, as the lander starts out in what looks like a retrograde orbit   
   around Mars, before entry.   
      
      
   > I assume it is a big no-no or   
      
      
   Such a landing would occur on the far side of Mars, as seen from Earth,   
   so direct telemetry from the lander to Earth would be impossible, in   
   addition to the problem with the extra rotational velocity. Nowadays one   
   could relay telemetry via some Mars orbiter, but at extra risk.   
      
      
   > have there been cases where it was done ?   
      
      
   Not that I know of.   
      
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