The phrase "alternate timeline" is correct and usable in written English.
It can be used in contexts related to science fiction, storytelling, or discussions about hypothetical scenarios where events differ from the known history.
Example: "In this story, the characters find themselves in an alternate timeline where the outcome of the war was completely different."
Alternatives: "parallel timeline" or "alternate reality".
Radiation is exhausting, and I felt as if I had been nudged into an alternate timeline.
"Our Trek is an alternate timeline with alternate details," he wrote.
"I'm the Ghost of Christmas Future, but it's an alternate timeline where the apes take over".
Still, at least the Nolans play by the rules, unlike whoever greenlighted Hollywood's most insidious recent innovation: the alternate timeline.
This, of course, is an unfalsifiable claim – you can't run a data analysis on an alternate timeline that doesn't exist.
So why not steer further into the alternate timeline angle and see how Blackadder might fare in Camelot, jostling for elbow room at the mythical Round Table?
Perhaps gaming's most interesting alternate timeline is the one where Newell doesn't leave Microsoft in 1996 – though it's an unworkable fantasy because, in most of the ways that matter, he helped build the anti-Microsoft.
But Bell's idea did have to be scaled down to fit the small screen, with his original idea putting the series in an alternate timeline where Australia is a republic and has an Aboriginal president.
The film, which stars Schwarzenegger as well as Emilia Clarke and JK Simmons, focuses on Kyle Reese travelling through time to protect Sarah Connor again but finding an alternate timeline playing out.
In this alternate timeline, the genius of 1984's splendidly cheesy The Terminator and its sleek, superior follow-up Terminator 2: Judgment Day, are the only history that matters.
Running in tandem with the narrative about how Smith set Corbyn on his climb to the highest plinth in our political pantheon, as creator of a long overdue socialist paradise, would be an alternate timeline.
