
SpaceX has begun “serious development” of a new rocket that it plans to use to start colonizing Mars in the 2020s, company founder Elon Musk announced Sept. 29.SpaceX has already ordered tooling and started erecting a facility to assemble the rocket, Musk said at the 68th International Astronautical Congress in Adelaide, Australia. The company has also been testing a new main engine, the Raptor.The rocket will be fully reusable, with the booster returning to Earth about 20 minutes after launch. The…