Saturday Citations: Will they or won’t they? A black hole binary refuses to merge. Plus: Vestigial eyeballs
"I know what you're thinking. Was that six eyes or only two? Well, to tell you the truth, in all this excitement, I've kinda' lost track myself." Under a microscope, the head of a daddy longlegs glows magenta where its modern-day eyes form. Opsins shown in green indicate that two additional sets of vestigial eyes existed in an earlier stage of the animal's evolution. Credit: Guilherme Gainett
It's been a long, eight-day leap…