DARPA Tried Using the Earth's Atmosphere as a Giant Sensor and Detected Something Interesting
While trying to determine if it could use the entire Earth's atmosphere as a massive sensor, the US military’s Defense Advanced Research Projects Agency (DARPA) made a highly unusual detection. The agency, which has overseen the development of cutting-edge military technologies for decades, encountered the signature of a SpaceX Falcon 9 reentering the atmosphere during a test in New Mexico last year. The goal of DARPA's AtmoSense program, which kicked off in late 2020, is to determine whether acoustic and electromagnetic waves propagating through the Earth's atmosphere could allow the US military to detect major events and disturbances, such as [...]