The magnetic 'birdsong' of the smallest planet

BepiColombo is slowly uncovering more and more fun facts about Mercury as it continues its preliminary mission. One of the more interesting things found so far is a magnetic "chorus" that appears similar to a phenomenon found in Earth's much larger magnetic field. A new paper published in Nature Communications from the researchers responsible for the probe's Mio instrument that is studying Mercury's magnetic field describes what could be thought of as a form of magnetic birdsong.