I thought an individual atom has been imaged before, at least roughly. Anyway, this is fantastic science. I'm excited to see how imaging atoms affects our understanding of quantum mechanics and atomic structure in general.
[1] https://en.wikipedia.org/wiki/Scanning_tunneling_microscope
Last year, Aricescu’s team used cryo-EM to map the protein to 2.5 ångströms. But with the new kit, the researchers attained a 1.7-ångström resolution, with even better resolution in some key parts of the protein. “It was like peeling off a blur over your eyes,” Aricescu says. “At this resolution, every half ångström opens up a whole universe.”