Time Travel Explained: High-Fiving Einstein and Making Physicists Grumpy

Time travel is not just a concept found in science fiction; it’s a fascinating reality that begins the moment one is born. Imagine riding on dinosaurs or high-fiving Albert Einstein. Thanks to the brilliant minds at Kurzgesagt, the mystery of time travel is unraveled in a way that might make many physicists grumpy.

In the universe, time isn’t a passing phenomenon but a dimension, much like the spatial dimensions of forward-backward, left-right, and up-down. Our universe is four-dimensional, combining three spatial dimensions and one time dimension into what’s called spacetime. The experience of time passing and life happening is essentially movement through this time dimension.

Here’s the kicker: everyone and everything in the universe moves at the speed of light through spacetime. This movement comprises separate speeds through time and space. Even when stationary in space, one is still moving through time, hurtling face-first into the future.

But there’s a twist – movement through space can influence movement through time. Increasing speed through space slows down the traversal through time, but the total movement remains at the speed of light. This concept is exemplified by light particles, or photons, which travel at light speed through space and experience no time passage, remaining frozen in the time dimension.

For a more in-depth exploration, Kurzgesagt provides a captivating resource on time travel, revealing that while time travel to the past remains a challenge, manipulating time within the framework of spacetime is a reality. This intriguing perspective not only makes time travel conceivable but paves the way for further scientific discussion and discovery.

Dive deeper into the intricacies of time travel by watching the full video on Kurzgesagt. Imagine the possibilities and understand the science behind this captivating phenomenon. Watch the video now and embark on your very own time travel adventure.