“ “...Astronauts could endure a long-term, roundtrip Mars mission without receiving a worryingly high radiation dose, new results from NASA's Mars rover Curiosity suggest. A mission consisting of a 180-day outbound cruise, a 600-day stay on Mars and another 180-day flight back to Earth would expose an astronaut to a total radiation dose of about 1.1 sieverts (units of radiation) if it launched now, according to measurements by Curiosity's Radiation Assessment Detector instrument, or RAD. RAD has found radiation levels on the Martian surface to be comparable to those experienced by astronauts in low-Earth orbit. A person ambling around the Red Planet would receive an average dose of about 0.7 millisieverts per day, while astronauts aboard the International Space Station experience an average daily dose between 0.4 and 1.0 millisieverts, “ well takes the possibility of astronauts dying from radiation out of the picture. As for dealing with the difference in gravity it’s a 6 month trip to mars so they would probably be able to acclimate to the 0.3 gs on Mars after a short amount of time, honestly we really have no knowledge on whether or not your body would atrify in lower gravity. We do know the change would not disable any of the astronauts it usually only takes a few days to acclimate to the shift in gravity. Where do you get this over exaggerated information that is designed to do nothing except fear monger.

Again that is something that is way beyond our current technological capabilities. The best we are going to do in the near future is a small base.

we do not have the destructive capability to effect a large planet or moons mass/ orbit in any major way. The reason have damaged the atmosphere so easily is because it is so ridiculously thin it is 0.8% of earths radius which is thinner than the skin of an apple if it was equivalent sized to the earth.

Even if we had a huge settlement on the moon with billions of people we would only effect the mass of the moon by something like 0.0000009% not enough to do anything.

The total radiation exposure you get while going through the outer van Allen belts is something like 0.16 to 1.16 rads for reference it takes 1000 rads to get a lethal radiation dose. The main reason to do this is to test the radiation effects on the new computer systems as the transistors are far smaller than what was used on the Apollo missions, a charged particle could flip a bit inside the computer and cause faulty information to be output if the shielding for the computers isn’t good enough.