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Daedalus never rolls in the mud, but he will occasionally roll on something stinky. This mess, however, was not his fault. Curious and dopey, he stood by watching a black lab dance in a giant puddle.

My poor dog - Dirty Daedalus

This shot was taken with my new 2.0 megapixel camera phone. Not the best picture in the world, but vastly better than my previous phone, as you can see here.

No seriously. Well, progress sort of. Theoretical progress, at any rate, and still hinging on one monster of a caveat: that spacetime is curved appropriately.

A group of researchers led by Amos Ori at the Technion in Israel has developed a theoretical model that overcomes a major hurdle in the current time travel theory. First of all, time travel requires the existence of closed timelike curves (CTC, aka closed timelike loops). In relativity theory, every particle has a worldline that describes its position in space and time throughout its existence. If the particle is in orbit around a mass of very high density that is greatly curving spacetime, it is possible that the worldline of this particle curves back on itself not only in space, but in time. The major hurdle in current theory is that for a time machine to exist, it would have to have negative density (another interesting topic, but I’ll have to save it for some other time). So according to Ori’s new theory, all that is needed is for gravity to have already begun curving spacetime appropriately and then for us to create “a vacuum space that contains a region field with standard positive density material.”

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About Me

Jason M. Adams

My name is Jason Adams and I work on opinion mining for a growing startup in Atlanta, GA.

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Header image credit seakwenby.

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