It may not be as famous as the so-called “grandfather paradox,” but that doesn’t make the idea of an infinite causal loop any less troubling… or fascinating.
Category: time travel – Page 12
A time travel enthusiast may just have found a way to create a time machine, but passengers that go inside it face a dark fate. The idea of a time machine was discussed on the Time Travel Facebook page, which boats a healthy 32.5k members. In the social media group, many ideas are discussed surrounding time travel, with many of them being outlandish and instantly dismissed.
An undergraduate and his supervisor ran the numbers and found paradox-free time travel to be mathematically consistent.
Richard Gott, co author with Neil De Grasse Tyson of “Welcome to The Universe” argues the key to understanding the origin of the universe may be the concept of closed time like curves. These are solutions to Einstein’s theory that may allow time travel into the past. in this film, Richard Gott of Princeton University explains the model he developed with LIxin Li. Gott explores the possibility of a closed time like curve forming in the early universe and how this might lead to the amazing property of the universe being able to create itself. Gott is one of the leading experts in time travel solution to Einstein’s equations and is author of the book “Time Travel In Einstein’s Universe”.
This film is part of a series of films exploring competing models of th early universe with the creators of those models. We have interviewed Stephen Hawking, Roger Penrose, Alan Guth and many other leaders of the field. To see other episodes, click on the link below:
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This article was originally published at The Conversation. The publication contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. Have you ever made a mistake…
University of Cambridge physicists have developed a theoretical foundation for the existence of wormholes, which are pipelines that connect two dissimilar places in space-time. Time travel and instant communication across great distances may become possible if a piece of data or a physical object could pass through the wormhole.
“But there’s a problem: Einstein’s wormholes are extremely unsteady, and they don’t stay open long enough for something to pass over.”
In 1988, physicists reached the deduction that a type of negative energy called Casimir energy might keep wormholes open.
Time Wars & Alternate Timelines
Posted in futurism, time travel
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Temporal Paradox and Time Travel delight us in science fiction, but what would a war across time really look like?
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Imagine two towns on two opposite sides of a mountain. People from these towns would probably have to travel all the way around the mountain to visit one another. But, if they wanted to get there faster, they could dig a tunnel straight through the mountain to create a shortcut. That’s the idea behind a wormhole.
A wormhole is like a tunnel between two distant points in our universe that cuts the travel time from one point to the other. Instead of traveling for many millions of years from one galaxy to another, under the right conditions, one could theoretically use a wormhole to cut the travel time down to hours or minutes.
Because wormholes represent shortcuts through space-time, they could even act like time machines. You might emerge from one end of a wormhole at a time earlier than when you entered its other end.
How Does the TARDIS Work?
Posted in media & arts, space travel, time travel
The TARDIS is the iconic time machine and spacecraft from the popular sci-fi series Doctor Who. The TARDIS functions by folding space using technology that taps into higher dimensions. But is there any scientific basis for this?
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