Isro said while the Instrument for Lunar Seismic Activity (Ilsa) had its ear to the ground, it also recorded " an event, appearing to be a natural one" and was investigating its source.

印度空间组织表示，虽然月球地震活动仪器（Ilsa）密切关注地面，但它也记录了“一个看似自然的事件”，并正在调查其来源。