Fascinating images from all parts of science!
Although my job is writing about science — putting it into words — there are times when images can say so much more than words. I am not much of a photographer or graphic artist, so most of these images were provided by other people, who are credited in the captions when I can remember who they were.
The E8 Lattice
The roots of the E8 lattice, projected into a 2-dimensional plane. This is easier to see than 248-dimensional space, where the lattice lives. The exceptional group E8 has been called "the most beautiful structure in mathematics." From What's Happening in the Mathematical Sciences.