Countdown to Armageddon by Edward M. Lerner, serialized in Jim Baen’s Universe,October 2007 to October 2008.
Einstein showed that gravity is only a manifestation of mass, a curvature of the space-time continuum caused by the presense of mass. No mass, no gravity. Time is similar—it passes only in relationship to. . . stuff. Each astronomical object, each planet, has a single achievable time transfer influenced by—and that can be calculated from—net local gravitation effects. That interval depends on its own mass, its sun’s, and the galaxy’s.
Variants
(1)
Countdown to Armageddon by Edward M. Lerner, serialized in Jim Baen’s Universe,October 2007 to October 2008.