Mars, I hear you. I’ve detected some quiet but distinct shaking on #Mars. The faint rumbles appear to have come from the inside of the planet, and are still being studied by my team. Take a listen.'https://t.co/GxR1xdRx1F pic.twitter.com/Z8Hn03jigO
— NASA InSight (@NASAInSight) 23 April 2019