Ymir ’s final burn—for Jiro, a suicide mission—had settled her in an orbit quite similar to Izzy’s: the same plane, the same average altitude. The only difference was that it was a little bit more oval, calculated to cross Izzy’s path twice during each revolution around the Earth. They were approaching one of those crossings, and so from Dinah’s point of view the space station kept getting closer, filling the window on her computer screen, obliging her to zoom out, giving her a progressively sharper, more detailed picture. As minutes ticked by, she was able to piece together a guess as to what had happened.