You can spot the zig-zag letters from their zig-zag lines. Let's look at the ‘V’ here. That down up movement makes the zig-zag. ‘W’ is the same, only with more diagonals. Down, up ...

One such discovery, dubbed the “Einstein zig-zag,” represents a rare alignment of galaxies and a quasar that creates a unique six-image gravitational lens. This extraordinary configuration ...