From: g_d_pusch_remove_underscores@xnet.com   
      
   T  writes:   
      
   > Explorer8939 wrote:   
   >   
   >> Is it possible to be in Mars orbit and collide with Olympus Mons?   
   >   
   > Without yet reading the other (probably more informed) replies   
      
   That is generally a mistake.   
      
      
   > I'll say if you can sustain a Powered Orbit (counteracting the tendency   
   > of a fast orbit speed leading to a greater orbit circumference)   
      
   I think you need to review your basic orbital mechanics. The lower an   
   orbiting body is, the faster that orbiting body moves.   
      
      
   > then you can skim right over the top of the highest peak you choose.   
      
   The real problem is friction from the martian atmosphere. So unless you   
   want to consider hovering flight under rocket power a "powered orbit,"   
   IMO, your answer is incorrect.   
      
      
   -- Gordon D. Pusch   
      
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