It’s still moving slowly. The mole has dug roughly three quarters of an inch since October 8th, and it could venture as deep as 16 feet. It could be a long, long time before the probe reaches its potential. Nonetheless, it’s a huge relief to scientists worried that one of InSight’s key instruments might go to waste. So long as there aren’t rocks or other hard obstacles underneath, the probe could shed more light on what’s happening beneath Mars’ surface.