Elon Musk’s proposed spaceship can send 100 people to Mars in 80 days

Today, SpaceX CEO Elon Musk unveiled the Mars vehicle — the spaceship his company plans to build to transport the first colonists to Mars. The spaceship is meant to launch from Earth on top of the booster and then travel the rest of the way on its own to the Red Planet.
The company's interplanetary spaceship — informally know as the BFS, or "Big Fucking Spaceship” — will have a diameter of 17 meters. The plan is to send about 100 people per trip, though he hopes to ultima