Set after Regeneration, after the skirmish with the Borg ship, Archer realises they need the Temporal observatory to learn more of the time travellers in the 22nd century…and the cybernetic creatures from the future. The timeline has been skewered already, a bit more won't hurt.

After the Battle at the Ark, John-117 and Cortana are found and rescued by the long-lost UNSC "Spirit of Fire"... [Disclaimers within] [Cross-posted on SB] [Image not mine]

The Xindi are once more waging war against humanity, blaming them for their problems and the split in their culture. Faced with possible annihilation, the human race becomes stronger...more militant.

The 2nd Doctor and his companion, Jamie, are pulled into the Star Trek Enterprise universe. Together with the crew of the U.S.S. Enterprise must face Temporal Warlords.

It might have been a rushed mistake, but the S.S. Valiant represented a new age, and was the groundbreaking beginning for Starfleet.

Set in the kelvin timeline & in between Star Trek 09 & Star Trek Into Darkness. This is after the season 4 finale but Trip survived the explosion. This involves time travel, love & adventure with younger versions of people from the future. Full summary inside if you only click on the story to read. Fem!Jim KirkxTrip Tucker. SpockxNyota. Future BonesxCarol Marcus. Further ScottyxOC.

Hoshi Sato must chaperone a group of students visiting an agricultural colony that has been transplanted from Earth on the eve of Halloween. But as the holiday grows nearer, she finds herself locked in a deadly struggle with an unnatural monster from the colony's distant past. And the key to her survival may lie with a colonist with a unique family history, and who forces to Hoshi

AU The Borg Sphere has opened a temporal vortex into Earth's past, to 2063, a day before First Contact with the Vulcans. The Enterprise crew have to fight a battle with Borg and ensure Zefram Cochrane completes his warp flight. But it soon becomes apparent something is very wrong, or right.

Starfleet has just been inaugurated, set to design and build new classes of exploratory starships. But they're going at a snail's pace, and a private businessman, tired of the lack of progress, takes the law into his own hands. With that one change, their future is safe, especially when the Xindi war starts.

The Enterprise starships have a rich history.

SHADO has been keeping aliens and the UFO attacks secret for a long time, but now, thanks to a time meddler working on the Temporal Cold War, all of that work has been for nothing.

Time meddler Noys Lambent sees Professor Quatermass as an ideal target to see what happens.

Time traveller and time meddler, Noys Lambent looks in on the Avatar universe as Pandora is invaded.

L'Enterprise accoglie un'umana del passato. orami a bordo da due anni si è abituata ma ha nostalgia di casa. Settembre la trova riportandola nel passato. dovrà decidere se restare nel passato o tornare nel futuro.

The Xindi attack changes everything for Earth. For the first time, Earth and humanity is threatened by an alien race who plan to destroy the planet. But time travellers have no intention of that happening.

With the Terra Prime mess sorted out, Archer and his crew have been sent back to the Delphic Expanse to properly explore the region. During their time they are accidentally sent back to witness Cochrane's first warp flight... and learn startling revelations.

Trip asks Jon about his middle name only to find a shocking truth about his husband's family history *Posted on AO3*

Mr Pem has a visit from someone whom he does not like... but he gets an unexpected offer.

So many possibilities exist, creating nexus points where moments that could have happened become reality, and the Earth-Minbari war is no exception. And now a time traveller from the Temporal Cold War has opened up a new front.

After the Apollo missions in the 60s and early 70s, space exploration began to be rare, but what if it received a revival and sparked off the construction of a base on the moon? The Temporal Cold War has found Moonbase Alpha as a potential battleground.

In this new crossover story, I'm using the characters from all the installments of Star Trek, beginning with Enterprise, to help Jack Bauer thwart the terrorist attacks in Los Angeles.

When Harriet Potter wakes up on her birthday to white hair, blue skin, and antennae of all things, she quickly realizes something is amiss. On a journey to find her father, she begins a quest of self-discovery, love, family and hope. As a wise man once said, to appreciate the beauty of a snowflake, it was necessary to stand out in the cold. Fem!Harry. Andorian!Harry. Dad!Shran.

The Temporal Cold War is a multi timeline event, stretching across dozens of points of time, not only found in the 22nd century. In one of those timelines, a time traveller breaks into the Odyssey's Asgard core. Paradoxes like that are worth getting up in the morning

AU History for the 22nd-century changes beyond recognition as Captain Archer and his crew stumble across a ship from the future. A ship that has passed between the barriers of reality. The Federation starship USS Defiant.

A catastrophic incident has upset the balance of the multiverse. Now the end of everything, of all existence across the entire multiverse, is on the verge of happening and it's up to the last Time Guardian to travel across the multiverse and recruit the necessary players to start setting everything to rights. A nearly impossible task that will most likely kill him or his recruits,