“If they weren’t so big, we wouldn’t have detected them,” researcher Bruce Banerdt said.

Source: https://houstonianonline.com/mars-quakes-reveal-what-the-interior-of-the-red-planet-looks-like-and-this-brings-some-surprises/

“I’ve been involved in efforts to get a geophysical station like InSight onto Mars for a long time, and results like this make all those decades of work worth it,” study co-author Bruce Banerdt said.

Source: https://www.independent.co.uk/space/nasa-mars-insight-spin-faster-b2389236.html