The US version of the DVDs featured interviews with two scientists from NASA's Orbital Debris Section. However, both scientists stated that the premise of having to rendezvous with debris in orbit is highly unlikely as it would take an extravagant amount of energy for a relatively small amount of salvageable material. One of the scientists stated that the previous director of the NASA Orbital Debris Section was in fact Donald J. Kessler, the scientist who proposed the Kessler Syndrome, which i… (More on Planetes)