a massive rocket that’s the size of a 40-story building, Musk talks about what it’ll take to get to Mars. “The thrust level for this configuration is about four times the thrust of a Saturn V moon rocket,” the biggest rocket humanity has ever created, he says. “In units of 747s, this would be the thrust equivalent of 120 747s with all engines blazing.” The rocket is so massive that it could take a fully-loaded 747 as cargo. While it may seem large now, “future spacecraft will make this look like a rowboat,” Musk says.