Dinah had scrounged three flat-panel monitors from various parts of the command module and zip-tied them to the common room table. These were covered with overlapping windows of various sizes. Some were terminal windows showing log entries or editors showing code, but most were video feeds showing different robots’ points of view on the mining operation. Only one of them looked outward: she’d positioned a redundant Siwi on the stern, toward the nadir, and aimed its camera at Earth. Other than that, her only "situational awareness" would come from a celestial navigation program that would display, in a small window, a three-dimensional rendering of the Earth with Ymir ’s trajectory superimposed on it as a geometric curve. Along the bottom of that window was a series of graphs plotting velocity and altitude versus time. Their velocity at the moment was some six thousand meters per second, up from four thousand just a couple of hours ago; within the next hour it would double if they took no action, then begin to drop again as they left perigee behind and coasted away into space.