'OK. What is that?' asked Amy, shouting over the shrill bleeping noise that screamed out of the console. 'It's a signal! the Doctor replied, never once taking his eyes away from the screen before him. 'A beacon. An alarm. No... It's stranger than that.' All at once the TARDIS shook violently, nearly knocking them both off their feet. 'And what was that?' said Amy, bracing herself and struggling to keep balance. 'Well, I'm not sure what that was,' said the Doctor. 'I think we may have hit some sort of gravitational speed bump.' 'A gravitational speed bump? They have speed bumps in space? How fast were we going?'

Alice Wendell stepped out beneath the great glass dome of the Oxygen Gardens and gazed up to see the glittering, icy moon of Tethys passing overhead. She had lived on Chelsea 426 for almost six months, practically since her graduation, but still the other residents - and even her colleagues - looked at her and spoke to her as if she were a complete stranger. She was sure they meant nothing by it, of course; it was just their way.