While NASA's Perseverance Mars Rover endures thousands of tests to prepare for the Red Planet, some stand out. It's put through trials of fire, ice, light and sound. It must withstand freezing temperatures, constant radiation, dust and tough terrain, not to mention the trip there. http://go.nasa.gov/2X6vKqJ | NASA Jet Propulsion Laboratory

NASA's Perseverance Mars Rover is just two days from launch! Today, join us for #CountdownToMars updates on the future of Mars exploration (all times EDT): 🕑 2 p.m.: Scientists discuss how Perseverance will collect Mars samples that could one day return to Earth 🕓 4 p.m.: Experts highlight how the rover's technology will one day enable human exploration of the Red Planet 🔗 Watch: www.nasa.gov/live | NASA - National Aeronautics and Space Administration