Timepivot — Brian N. Ball

Time drifted onto the ruin of the Galactic Federation. The centuries rolled over the wars of the first part of the new millennium, laying their patina of forgetfulness over the adventures of the survivors of the expedition to the Forever Planet. Only in the memory banks of lost and ruined computers was there a record of the writhing piece of time, hung in its weird universe, poised in a matrix of forever, which had waited eons to release its makers from their imprisonment on a planet which was their plaything, workshop, laboratory and engine.

No one returned to the planet of the Timepivot. Not of his own volition.