SPLASH! Watch the U.S. Navy littoral combat ship Sioux City take an early polar bear plunge into the icy Menominee River. The christening and launch brings the future USS Sioux City one step closer to joining the fleet! lmt.co/1OXUgA3 | Lockheed Martin

After traveling for two years and billions of kilometers from Earth, NASA's OSIRIS-REx Asteroid Sample Return Mission spacecraft is approaching its destination: the intriguing asteroid Bennu. Starting at 2 p.m. EDT, listen to experts from NASA Solar System Exploration, NASA Goddard, The University of Arizona and Lockheed Martin talk about asteroid science operations that started last week and what we can learn from this mission about the origins of our solar system. Details: https://go.nasa.gov/

Piloting an X-plane that’s pushing the boundaries of aviation is no small feat. Listen in as “Mission X” pilot “Turbo” reflects on the X-35B’s historic flight after 20 years. | Lockheed Martin