NASA’s New Astronaut Candidates

NASA’s 2025 astronaut candidate class greets the crowd in this Sept. 22, 2025, image. The group was introduced Monday following a competitive selection process of more than 8,000 applicants from across the United States. The class now will complete nearly two years of training before becoming eligible for flight assignments supporting future science and exploration […]

The Need to Bake Out Silicone Based Thermal Control Coatings

BackgroundThe NASA Engineering and Safety Center (NESC) has reviewed flight, ground test, and published data on ultraviolet-induced degradation of silicone based thermal control coatings. Analysis has shown, for at least one silicone coating, that bake-out plays an important role in ultraviolet (UV) degradation, indicating that UV interaction with paint volatiles, and not the structural material, […]