Spacetime Travel
The concept of moving not only through space but through time as a dimension, typically via relativistic effects (time dilation) or exotic configurations of spacetime (wormholes). Unlike science‑fiction portrayals, spacetime travel is already real in a limited sense: astronauts on the ISS experience slight time dilation, and GPS satellites must account for relativistic effects. True spacetime travel to the future is theoretically possible via near‑light‑speed journeys; travel to the past remains highly speculative, often running into paradoxes. The term captures the human desire to treat time as a navigable medium rather than an inexorable flow.
Example: “Her spaceship accelerated to 99% light speed; when she returned, decades had passed on Earth while she aged only months. She had achieved spacetime travel—to the future, at least.”
Spacetime Travel by Dumu The Void March 28, 2026
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