The Eternal Watch of the Young DreamersLiyan KangAward: Top 100
School: zhengzhou no.7 senior high school This photograph captures the serene beauty of the clock tower at Zhengzhou University as night falls. The sky transitions from the cerulean hues of day to the profound blues of night, mirroring the subtle rhythm of the Earth's rotation. Employing long exposure techniques, the captured star trails resemble brushstrokes of time, painting bright arcs across the night sky, encircling the clock tower--a sentinel of time. The flashlight beam from the youth in the bottom right corner pierces the night, echoing the celestial stars, symbolizing humanity's relentless pursuit and exploration of the cosmos. Physical phenomena explanation： trails are an astronomical phenomenon caused by the Earth's rotation. As the Earth spins on its axis daily, distant stars appear to rotate around the celestial pole to a stationary observer on the ground. In long exposure photography, this perceived motion is recorded, creating radiant trails that emanate from the celestial pole. These trails, the continuous lines of stars' positions in the night sky, reflect the dynamic nature of the Earth's rotation. 
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