影片說明
How do auroras (northern lights) form and why do we see green, red, and purple lights in the sky? In this video, we explain the entire process step by step – from the solar wind and charged particles emitted by the Sun, through their interaction with Earth’s magnetosphere, to their guided movement along magnetic field lines toward the polar regions.
Learn how collisions with oxygen and nitrogen in the upper atmosphere create visible light, why different colors appear at different altitudes, and how auroras form dynamic shapes like curtains, arcs, and rays. We also explain magnetic reconnection, geomagnetic storms, and how solar activity influences aurora intensity and visibility.
Discover where and when you can see auroras, and why they are important for understanding space weather, satellites, GPS, and power systems. A complete, detailed, and easy-to-understand explanation of how auroras work.
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