The High-frequency Active Auroral Research Program (HAARP) is a scientific research program that was originally developed to study the ionosphere, a part of the Earth's upper atmosphere. Established in the early 1990s, HAARP is located in Gakona, Alaska, and operates a powerful ionospheric research facility. The primary tool used by HAARP is a high-frequency (HF) transmitter that can send focused beams of radio frequency energy into the ionosphere.
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