Elon Musk revealed his plan to colonize Mars, but after the failure to launch the falcon-9 most people are worried about it. one of my questions is why does musk want to do this? first, his rocket is reusable and is built up of 3 parts. Elon musk want’s to colonize mars. why did he choose mars, not Jupiter or Uranus? Elon wants to do this by 2024!