Aurora borealis, or northern lights, is one of nature’s most spectacular and, at the same time, complex phenomena. The mesmerizing light show we see here on our planet results from particles that originate roughly 93 million miles away from the Sun. The particles travel across space and collide with Earth’s atmosphere, leading to wavy light patterns in the polar night sky. To understand what aurora borealis is, you must have a basic idea of what solar wind is, how
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