Mars is 228 million km from the sun. You have walked 81 metres. Robots have been sent to Mars to explore and collect rocks. Martians in sci fi films and comics were named because they lived on mars. 

Joe's Solar System Walk
  1. The Sun
  2. Mercury
  3. Venus
  4. Earth
  5. Mars
  6. Jupiter
  7. Saturn
  8. Uranus
  9. Neptune
  10. Pluto