Mysterious 'Earth-Like’ Rumblings Inside Mars Detected by NASA Lander Trigger Flurry of Theories
![Mysterious 'Earth-Like’ Rumblings Inside Mars Detected by NASA Lander Trigger Flurry of Theories](https://cdn2.img.sputniknews.com/images/106668/63/1066686365.jpg)
The $850 million robotic geophysicist InSight lander touched down on Mars in November 2018 on a mission designed to help scientists better understand the interior of the Red Planet, as its seismometer was to feel for seismic waves, or 'marsquakes'.