Electrophonic meteor sounds, heard simultaneously with the meteor appearance, are a
longstanding problem due to their nonintuitive nature. Previous investigations have been
undermined by lack of instrumental recordings. Here we present the first instrumental
detection of electrophonic sounds obtained during the observation of 1998 Leonids from
Mongolia. Two Leonid fireballs of brightness− 6.5 m and− 12m produced short, low‐
frequency sounds, which were simultaneously recorded by microphones in a special setup …