According to memory alpha, the federation knows of over 40 techniques to travel back in time, I wanted to list all the ones we know and have some fun deciding what are the best ones.
I probably missed some, so I wanted to make a poll where everyone can add answers, but it doesn’t seem that’s supported. Feel free to mention other ways then and I’ll see if it’s possible to add the option.
My favourite would be controlled chroniton emissions: apparently it’s what the Borg use and the borg only go for perfection, also it’s quite replicable with 24th century federation tech and can be miniaturised, as Daniels showed.
Most of the other techniques are either dangerous (slingshot), difficult to control (the natural ones, such as rifts) or dependent on the will of unreliable entities such as Q and the Guardian.
The devidians’ technique would seem really interesting, as it allows for people to go seemingly anywhere anywhen, but we may not know it’s limitations.
The worst seem to be mr Atoz’s at the library, as the subjects need “preparation” and then staying in times they are not prepared for have odd consequences.
I probably missed some, so I wanted to make a poll where everyone can add answers, but it doesn’t seem that’s supported. Feel free to mention other ways then and I’ll see if it’s possible to add the option.
My favourite would be controlled chroniton emissions: apparently it’s what the Borg use and the borg only go for perfection, also it’s quite replicable with 24th century federation tech and can be miniaturised, as Daniels showed.
Most of the other techniques are either dangerous (slingshot), difficult to control (the natural ones, such as rifts) or dependent on the will of unreliable entities such as Q and the Guardian.
The devidians’ technique would seem really interesting, as it allows for people to go seemingly anywhere anywhen, but we may not know it’s limitations.
The worst seem to be mr Atoz’s at the library, as the subjects need “preparation” and then staying in times they are not prepared for have odd consequences.
(Please don’t tell Jean-Luc I said this)
), the controlled warp engine implosion (creating a time warp) was used in conjunction with the gravity well of Psi 2000 which generated the time travel in The Naked Time. This combination of time warp plus gravity also is the basis for the slingshot maneuver. While in time warp, traveling within/into a gravity well (in a close orbit of a planet or star), you go back in time; slow down back into normal space-time, and you are in the past. Break away from the gravity well while in time warp (slingshot), you go forward in time; slow down into normal space-time and you are in the future. Braking to sublight is the trick to hitting the desired time period in either case. 
