'Mars quake': Here's what the first tremor on the red planet sounds like

Three distinct sounds were detected by NASA's Insight Lander while sitting on Mars' surface. The first "Mars quake" has been detected, NASA announced Tuesday. The finding "officially kicks off a new field: Martian seismology!," said Bruce Banerdt of NASA's Jet Propulsion Laboratory. NASA said this is the first trembling that appears to have come from inside the planet, as opposed to being caused by forces above the surface, such as wind. The sound was detected by NASA's Insight Lander, a robot spacecraft that's now sitting on the Martian surface.