Given how counterintuitive weightlessness is, remote operation of robots in space poses major problems; especially when delicate equipment and exhaust gases from other satellites are involved. One way of handling the delay as instructions travel between space and the ground via satellite relays is by building systems with a high degree of autonomy. But, according to Lockheed, what NASA and the ATC were demonstrating on the ISS is a slightly different approach, where the ground controller is working in concert with a second operator on the space station using an interface that allows for automated control of one or more robots combined with manual control.