Time travel

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A Dalek at Froghall a few years ago… That’s another story…

I was reading the New Scientists back page last week and there was a question about time travel. Where would you go to in the past or future? Something along those lines. The answer one person gave is that as the planet moves through space, if you travelled six months forwards or backwards for example, when you rematerialised Earth would be at the other side of its orbit. Difficult unless you are in a vessel with an airlock. They went on to explain that as the sun is also moving through the milky way galaxy, its planets spiral around it in its wake, so where Earth was a year ago is far behind where it is now.

I realised from reading that, that your time machine would have to move in space as well as time. In something like the T. A. R. D. I. S. This is a time machine in the Sci fi series Dr Who. It means “Time and relative dimensions in space”. In other words it can travel in space as well as time.

Considering the show was first broadcast in the 1960’s that’s pretty clever. Working out you need to be able to find the Earth’s coordinates in time and space. Mind you they were closer in time to Einstein so they might have had more of an idea about it than we do…..

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