Kīlauea volcano on Hawaii’s Big Island erupted on Tuesday in a nine-hour spectacular, shooting fountains of lava some 1,300 feet into the air, according to the U.S. Geological Survey (USGS).

Many people who don’t believe one conspiracy theory about that station—known as the High-frequency Active Auroral Research Program, or HAARP—believe another. A common misconception is that it can ...