With 28 engines firing together in a coordinated, cacophonous symphony of rocket fuel, the Falcon Heavy lifts off with 5 million pounds of force—more than any ship since the retired ’70s-era Saturn V—and twice the payload weight of any other modern spacecraft. Those thrusters equate to three space-cargo-hauling Falcon 9 rockets and will tote tens of thousands of pounds of satellites, a solar sailing spacecraft, and eventually two lunar tourists. The side boosters burn first and land back on Earth, while the center engine makes the final push out of the atmosphere. The more hardware SpaceX can recover, including that last stage, the cheaper (and cheaper) the flights become. Success in these early missions will prove that this is the ship with the horsepower, reliability, and price point to shuttle humans to Mars.