Spacetime Travel

The big daddy of all travel concepts: moving through time as well as space in a controlled manner, typically by manipulating the geometry of spacetime itself via General Relativity. This isn't just going fast (relativistic travel), which only goes forward in time. This is about creating closed timelike curves—wormholes, warp drives, cosmic strings—to theoretically hop to the past or distant future without waiting. It's engineering the universe's roadmap to include shortcuts and loops.

Example: The Alcubierre "warp drive" concept is spacetime travel. It doesn't move the ship through space faster than light; instead, it contracts spacetime in front of the ship and expands it behind, effectively surfing on a wave of distorted geometry. The ship sits in a "warp bubble" not subject to relativistic effects. You arrive at your destination quickly without any time dilation mess. Another example is using a traversable wormhole: one mouth is accelerated to near light-speed and brought back, creating a time machine where entering one end exits the other in the past.

by Abzugal January 24, 2026

Noetherian Travel

A theoretical propulsion concept that abuses the symmetry-conservation link for movement without apparent reaction. It seeks to engineer a scenario where the symmetry of your vehicle's local physical laws is carefully manipulated, and the resulting conserved quantity (usually momentum) is not expelled locally but is instead "handed off" to a distant field or another part of spacetime geometry. The goal is motion that looks like it violates Newton's third law (for every action, an equal reaction) by satisfying it non-locally via deep physics.

Example: The "Phase Sail." The ship's drive doesn't expel mass. Instead, it cyclically changes the internal gauge symmetry of its quantum vacuum core. Noether's Theorem says this changing symmetry must be accompanied by a conserved current (momentum). By coupling this process to the ship's hull and, crucially, to the background Higgs field of the universe, the momentum conservation is satisfied by imparting an infinitesimally small, opposite change in the field's configuration across the cosmos. The ship moves because the entire universe imperceptibly "pushes back" in a diffuse, non-local way. You're not pushing against anything nearby; you're leveraging the universe as your reaction mass. Noetherian Travel.

by Dumuabzu January 24, 2026

Gaming time travel.

When a child usually between 11 and 15 that plays video games and convinces himself that he is doing the right thing for his life and that everything else such as homework or friends is irrelevant, hence years and years go by and he only left his room to go take a shit only to realize that he is now 17 and he should've listened to his mother.

Bob: i'M 17 years old did I really just waste 4 years of my life playing World Of Warcraft?
Joe: Yeah dude you wen't through a Gaming Time Travel.
Bob: My posture is all fucked up now and my ass smells from the computer seat.

by Darte July 1, 2016

Jedi time travel

When you take pcp, acid and heroine at the same time

Hi Janine it's eric haha gotchu with the Jedi time travel

by Ericsosexy September 21, 2017

Mental Space-travel

To be in the state of mind where the world is your instrument. You are a floating wisp through space and time. Your ideas and thoughts extend beyond society’s frontier. You have dreams and projects that you won’t let anyone get in the way of no matter what. You are mobile and never settle with what you are comfortable with, you always strive to discover something new about yourself and your surroundings.

Person 1: Why do you have plane tickets to Egypt?

Person 2: I’m going to build an automated dildo machine on top of the pyramid of Giza which will be powered by the sun’s solar energy

Person 1: wtf why?

Person 2: I’m in a state of mental space-travel

by Diskoteklizard November 18, 2018

The blues traveler

Going down on a woman like she’s ya favorite harmonica

Things really heated up after I gave her the blues traveler.

by Daduffster July 26, 2019

Dennis of all trades

Analogous to “Jack of all trades” but a tribute to the legend himself Dennis Waterman. The only man with enough talent to star in it, write the theme tune and sing the theme tune.

They can do it all, they’re a “Dennis of all trades”.

by Gerry Standing November 3, 2020