Watch: Theoretical Physicist Brian Greene Discusses the Possibility of Time Travel

Thursday, 31 December 2015 - 7:46PM
Science of Sci-Fi
Thursday, 31 December 2015 - 7:46PM
Watch: Theoretical Physicist Brian Greene Discusses the Possibility of Time Travel
Though the possibility of traveling to the future has been known since Einstein came up with the theory of relativity, most people today continue to view time travel as some crazy sci-fi fantasy. Despite popular belief, however, the idea that objects experience time differently is a fundamental truth concerning the laws of nature. Satellites high above the earth experience time differently than objects on the earth due to gravitational time dilation. Likewise, objects moving at speeds close to the universal limit of the speed of light also experience time differently. Thus, the possibility of a human being one day using these natural truths to experience time at a different rate than he would on the surface of the earth could almost be classified as an inevitability.

Recently, Brian Greene, a professor at Columbia University and popular theoretical physicist, discussed these matters in a new video put out by Big Think. He not only talks of the possibility of future time travel, but also the seeming impossibility of traveling to the past and whether or not this thing that man calls "time" actually exists:


Greene does a great job of making these truths of Einstein's relativity perfectly understandable, and he also deals with a lot of interesting tidbits about the nature of time in his short speech. It's interesting to note that while traveling to the past hasn't been definitely ruled out of the equation just yet, there's essentially no evidence that it could ever be possible. All current ideas suggesting it are purely hypothetical.

Anyway, it's still exciting to be living in a time in which these subjects are even being discussed. Great strides are being made in the realm of space travel, and so it wouldn't be a stretch of the imagination to conclude that one day in the not so far off future, man will enter a world where some astronauts take on the role of time travelers as well. They might not travel in a blue police box and call themselves 'Time Lords,' but hey, it's still pretty cool.
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