![Listen to the first marsquake ever recorded: NASA's InSight detects likely tremors on the](http://web.archive.org./web/20190425020349/https://i.dailymail.co.uk/1s/2019/04/23/21/12629882-0-image-a-14_1556049803994.jpg)
A robot stationed on the red planet has, for the first time, detected what’s thought to be a ‘marsquake.’ NASA’s InSight lander has been listening for faint rumbles beneath the surface since December, when it placed its seismometer down to begin the groundbreaking mission. In what scientists have hailed an exciting milestone, the InSight team says the lander measured and recorded a seismic signal on April 6, its 128th Martian day using its Seismic Experiment for Interior Structure (SEIS) instrument.