At the moment, huddled around a pair of screens, two bearded men stare at a string of numbers and color-coded lines. It’s a downlink, coming from the probe Juno, which has been orbiting Jupiter since 2016. Mike Levesque, who manages the network’s operations and relevant Dark Room activities, stands nearby, watching, explaining the process. “Those are the data systems operators,” he says, nodding at the two bearded men. “It’s their job to extract the spacecraft information”—the temperature, the fuel, what’s turned on, what’s turned off—“and send it to mission support.” On Voyager I, for instance, of 160 bits, only about 10 are relevant to the goings-on aboard the craft.