Will time travel ever be possible? The science behind the possibility.

A common theme in sci-fi media, time travel is gripping. It is defined by the late philosopher David Lewis in his essay “The paradoxes of time travel” as “[involving] gap between time and space-time. Every traveler departs and then arrives at his destination; the time that elapsed from departure to arrival… is the duration of the trip.

Time travel is commonly understood by most as traveling back to a bygone era or jumping to a point in the future. But how much of the idea is based on reality? Is it possible to time travel?

Is time travel possible?

According to NASA, time travel is possible, but not in the way you might expect. Albert Einstein’s theory of relativity says that time and motion are relative to each other, and nothing can go faster than the speed of light, or 186,000 miles per second. Time travel goes through what is called “time dilation”.

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