Take a vacation on Mars in the future? Forget it: scientists tell us there is too much radiation, even if your spacecraft is shielded. Alas, we need to learn much more before we’re ready to travel into space.
NASA has been discussing going to one of the moons of Mars and going to the planet itself from there. In New Scientist, David Shiga quotes planetary scientist Pascal Lee as saying, “I, for one, would go to Phobos or Deimos in a heartbeat, even without any hope of landing on Mars.”