According to the European Space Agency, Comet 67P/Churyumov-Gerasimenko seems to be emitting a ‘song’ in the form of oscillations in the magnetic field in the comet’s environment. It is being sung at 40-50 millihertz, far below human hearing, which typically picks up sound between 20 Hz and 20 kHz. To make the music audible to the human ear, the frequencies have been increased by a factor of about 10,000. The scientists think it must be produced by the comet as it releases neutral particles into