Every now and then, people around the world are amazed—and sometimes disturbed—to see thousands of tiny spiderlings floating down from the sky, seemingly raining on the earth below. This eerie spectacle is the result of a curious and fascinating behavior called ballooning, in which spiders use silk threads as invisible parachutes to catch the wind and fly. Recent scientific discoveries reveal that spiders can even harness Earth’s electric fields to take off without wind, making their aerial journeys feel almost supernatural. This article explores the science, mystery, and wonder behind the ballooning phenomenon.
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