When we gaze at the sky, our eyes often linger on blue horizons, floating clouds, or twinkling stars—rarely do we think about the critical processes unfolding 80 to 100 km above ground. This region, known as the mesopause, acts as a vital transition zone for aviation and aerospace activities (not vital for routine commercial aviation, but it is indispensable for high-altitude aerospace, experiment ...[Read More]
China’s Hainan Unlocks Mysteries of Heat and Sodium Transport 80–100 km Above Earth
Figure 1: The sodium lidar system deployed in Hainan, China. Credit: USTC Research Team.