InSight makes first ever possible 'marsquake' detection.

[gary]

https://www.abc.net.au/news/2019-04-24/mars-probe-insight-detects-first-possible-marsquake/11041370

[xelasnave]

Mmmm that is so interesting.
Surprising given the expectations that they bothered to look.
I think dismissing the existence of plates is maybe unrealistic.
Alex