Each January, NASA pauses to honor members of the NASA family who lost their lives while furthering the cause of exploration and discovery, including the crews of Apollo 1 and space shuttles Challenger and Columbia. In 2020, the Day of Remembrance will be observed on Jan. 30. Visit nasa.gov to learn more. Pictured here, the massive granite Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida. Credit: NASA #nasa #dayofremembrance