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

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  1. Countdown to Armageddon by Edward M. Lerner, serialized in Jim Baen’s Universe, October 2007 to October 2008.
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Edward M. Lerner