My mind usually defaults to "most things have already been discovered AND confirmed", seeing something like this confirmed only so recently is always cool, as it forces me to rethink some of my assumptions!
(Yes, I know there are plenty of undiscovered, and even more unconfirmed things out there, that doesn't change my mind's default reaction though!)
But in the middle happens most what we cannot comprehend. How does a cell know when to divide. How exactly the process goes. Why do we have consciousness? Having theories capable of describing atoms and stars we can't figure out the middle, this is fascinating.
Imho the issue is the complexity of system. Stars and atoms are actually not that far apart. In the middle the amount of effects with comparable magnitude and stable states are the greatest.