An early photo of the heat shield skeleton of the Orion spacecraft. It is the largest ever built, and is capable of protecting the crew from temperatures of nearly 4,000-degrees Fahrenheit, as well as the impact from splashing down in the Pacific Ocean. Check out how Lockheed Martin is engineering the journey to Mars and protecting future astronauts on their return to Earth. Credit: Lockheed Martin #nasa #lockheedmartin #orion #heatshield #technology #tbt #throwbackthursday #engineering #lockheedmartin