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.