coastal town of Daisen in Japan's Tottori Prefecture were treated to a mesmerising light display earlier this month. Social media lit up with images of radiant pillars stretching into the night sky, reminiscent of scenes from a science fiction movie. While many speculated about an alien invasion, the truth behind this spectacle is firmly grounded in natural phenomena.
Contrary to the initial alien invasion theories, the light pillars are a natural phenomenon known as 'Isaribi Kochu.' This captivating display occurs in coastal regions of Japan when fishermen use bright lights, called «isaribi,» to attract fish at night. Under certain atmospheric conditions, such as the presence of ice crystals in the air, these lights reflect vertically, creating the stunning light pillars.
The occurrence of Isaribi Kochu requires a combination of clear weather, low temperatures, and ice crystals high in the atmosphere. When these conditions align, the lights from the fishing boats reflect off the ice crystals, producing vertical light pillars that can be seen from the shore. This rare and beautiful interaction between human activity and natural conditions often leaves spectators in awe.
On May 11, social media users, particularly on X (formerly Twitter), shared stunning images of the light pillars seen over Daisen. One user, Maashii, posted a photo showing nine luminous pillars descending from the night sky, capturing the attention of many. According to Japanese media outlet
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