7.5K views · 101 reactions | Erika Alvarez is the Lead Systems Engineer for NASA's Space Launch System — so what does a lead systems engineer do? Get the details and learn more about SLS in our newest episode of NASA's Rocket Science in 60 Seconds! go.nasa.gov/2WPOGgf | NASA's Marshall Space Flight Center | Facebook

11K views · 574 reactions | Right now, 100,000 fasteners, 750 sensors and 45 miles of cabling are being installed in the NASA's Space Launch System core stage to prepare for its first flight with NASA’s Orion Spacecraft! go.nasa.gov/2KuxfYA | NASA's Marshall Space Flight Center | Facebook