Out of Time and Out of Place: A History of Anomalous Objects and Events that Seemingly Appeared in the Wrong Time

“Time travel offends our sense of cause and effect - but maybe the universe doesn't insist on cause and effect.” - Edward M. Lerner, physicist and author

We take time for granted as it passes during every moment of our existence. Other things may change, but time remains constant and predictable. The past, the present, and the future exist within a harmonious, reliable, and never-changing system. Or at least that’s how it seems…

It was Albert Einstein who, in 1905, first theorized that time might not be quite as straightforward as that. In one of the most influential papers on physics ever published[1], he proposed something called “time dilatation.” This suggested that time was neither fixed nor constant and that the passage of time was related to the relative speed of the observer. The closer an object approached the speed of light, the more notable this effect was. For example, if it were possible to build an interstellar craft capable of reaching speeds that approached the speed of light, the passengers on that ship might experience the passage of a single year during a voyage, but when they returned to Earth, they might find that dozens of years had passed on the planet.

That was a truly revolutionary idea back in 1905, and it wasn’t until the 1960s that technology had advanced to the point that it was possible to conduct experiments to check Einstein’s theory by measurement. Those experiments and subsequent tests proved that he was entirely correct. Even in 1908, new theories proposed that time was the fourth dimension of spacetime and that it wasn’t fixed at all but governed by the same laws of relativity that applied to other aspects of physics.

These were exciting developments, and current theories of physics have taken this idea even further, suggesting that both space and time are “emergent.”

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Buku audio : 1 Februari 2025