While we prepare for our first flight with NASA’s Orion Spacecraft in 2018, wind tunnel testing is already underway on the next, more powerful version of SLS. It will deliver a 105-metric-ton (115-ton) lift capacity and will be 364 feet tall in the crew configuration -- taller than the Saturn V that launched astronauts on missions to the moon. Here's more: go.nasa.gov/2ik11Ax #NASA #NASASLS #JourneytoMars