Every January, we pause to honor members of the NASA family lost in our space exploration program – including the crews of Apollo 1, Challenger STS-51L, and Columbia STS-107 – by celebrating their lives, their bravery, and their contributions to human spaceflight.⁣ Safety is a key value at NASA. It’s the cornerstone that we build mission success on. As we push forward to the Moon and Mars, continue missions to the International Space Station, and work with commercial companies and international partners, it is vital that we always remember and implement the lessons of the past in our preparations.⁣ Image descriptions:⁣ 1. A wreath of red and white flowers is left at the Apollo 1 monument as part of NASA's Day of Remembrance in January 2025, at Arlington National Cemetery in Arlington, Va. The monument, which can be seen through the wreath, is made of gray stone and has the words “In memory of the Apollo 1 crew,” “Ad astra per aspera,” and the crew’s names etched on it. Credit: NASA/...