252K views · 8.3K reactions | ⚙️ We're testing ways to bring Mars samples back to Earth. Engineers are developing crucial hardware for the series of daring Mars Sample Return missions. Prototypes for important robotics are undergoing testing here at JPL, NASA's Marshall Space Flight Center, and NASA Langley Research Center. go.nasa.gov/3pRpGRw | NASA Jet Propulsion Laboratory | Facebook