While the Compton Spectrometer and Imager (COSI) gazes into space, another experiment is listening for whispers from the Earth itself. Housed in two humble white boxes tucked behind COSI's solar panel, a triad of microphones are recording infrasound – sound too deep for humans to hear. Infrasound sources include volcanoes, earthquakes, ocean waves, the aurora, …
High-Flying Recording Studio Captures Deep Bass Infrasound





