NASA is going to Mars, and here on Earth, the agency’s Marshall Space Flight Center in Huntsville, Alabama, is the first stop for building the world’s most powerful rocket for the ride – the Space Launch System (SLS). The SLS will be NASA’s first exploration-class vehicle since the Saturn V took American #astronauts to the #moon more than 40 years ago. It will expand our reach in the solar system, launching crews aboard the new Orion spacecraft to explore multiple, deep-space destinations. A fleet of #robotic spacecraft and rovers are already on and around Mars, but to fly to and land humans safely on Mars requires a next-generation spacecraft – #Orion. SLS will ensure it gets there. Orion’s first flight atop the #SLS will not have humans aboard, but it paves the way for future missions with astronauts. Ultimately, it will help #NASA prepare for missions to the Red Planet. During this flight, currently designated Exploration Mission-1 (EM-1), the spacecraft will travel thousands of mi...