There was a book by two authors in which characters are able to travel into the past. The main character was named Joshua and had a friend called Sally. The authors are most probably British as I had read the book in British Council Library. In the book, people time travel by holding a small device.
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1We're going to know a few more details, things like when you read it, or when it may have been published. We're also going to need a lot more details than them being able to travel by holding a device as that's a common trope. Take a look at this guide to help you add in some more details.– EdlothiadDec 8, 2017 at 8:06
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Knowing the character's names is an enormous help.– ValorumDec 8, 2017 at 8:07
1 Answer
This is The Long Earth by Terry Pratchett and Stephen Baxter.
The device you're referring to is a 'stepper'.
Joshua Valienté: an orphan, born on another world when his mother stepped during childbirth. A natural stepper.
Sally Linsay: daughter of the inventor of the "Stepper" box, a device that allows the majority of humans to step between parallel universes. A natural stepper and later romantic interest to Joshua Valienté.
For the record, there's no time-travel in this book, only dimensional travel.
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1Thank you. That is the book I am looking for. Ah! Right, dimensional travel. But they are able to travel where Joshua encounters very old animals. Isn't that time travel? Dec 8, 2017 at 8:06
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4@ShantanuHebbar - It's parallel worlds, not time travel. Occasionally they travel to a world where the dinosaurs didn't die out, but it's still always the same year– ValorumDec 8, 2017 at 8:53