Tags

(2)

Variants

(2)
  1. “Twin Paradox” by Robert L. Forward, Analog Science Fiction / Science Fact, August 1983.
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Robert L. Forward
  2. expanded.“Twin Paradox” by Robert L. Forward, in Indistinguishable from Magic (Baen, September 1995).
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Robert L. Forward