He shuddered, and for lack of any other notion, kissed her forehead. Her arms came up sudden as a snare and held him fiercely, pulling him down onto her again and he seized her, too, crushing her to him hard enough to feel the breath go out of her, unable to let go. He thought vaguely of Brianna's talk of giant orbs that whirled through space, the thing called gravity--and what was grave about it? He saw that well enough just now: a force so great as to balance some body unthinkably immense in thin air, unsupported--or send two such bodies crashing into each other, in an explosion of destruction and the smoke of stars.