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Archive for the ‘time travel’ category

Oct 9, 2020

Can we resurrect the dead? Researchers catalogue potential future methods

Posted by in categories: cryonics, life extension, time travel, transhumanism

Alexey Turchin and Maxim Chernyakov, researchers belonging to the transhumanism movement, wrote a paper outlining the main ways technology might someday make resurrection possible.


From cryonics to time travel, here are some of the (highly speculative) methods that might someday be used to bring people back to life.

Oct 1, 2020

For the First Time Ever, Scientists Caught Time Crystals Interacting

Posted by in categories: computing, quantum physics, time travel

That’s big news for the most mysterious phase of matter—and maybe physics as we know it.


For the first time, scientists have observed an interaction of a rare and baffling form of matter called time crystals. The crystals look at a glance like “regular” crystals, but they have a relationship to time that both intrigues and puzzles scientists because of its unpredictability. Now, experts say they could have applications in quantum computing.“regular” crystals, but they have a relationship to time that both intrigues and puzzles scientists because of its unpredictability. Now, experts say they could have applications in quantum computing.

🤯 You love time travel. So do we. Let’s nerd out over it together.

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Sep 27, 2020

A Physicist Has Come Up With Math That Makes ‘Paradox-Free’ Time Travel Plausible

Posted by in categories: mathematics, physics, space, time travel

No one has yet managed to travel through time – at least to our knowledge – but the question of whether or not such a feat would be theoretically possible continues to fascinate scientists.

As movies such as The Terminator, Donnie Darko, Back to the Future and many others show, moving around in time creates a lot of problems for the fundamental rules of the Universe: if you go back in time and stop your parents from meeting, for instance, how can you possibly exist in order to go back in time in the first place?

It’s a monumental head-scratcher known as the ‘grandfather paradox’, but now a physics student Germain Tobar, from the University of Queensland in Australia, says he has worked out how to “square the numbers” to make time travel viable without the paradoxes.

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Sep 25, 2020

A Student Just Proved Paradox-Free Time Travel Is Possible

Posted by in categories: quantum physics, time travel

Now we can all go back to 2019.


In a new peer-reviewed paper, a senior honors undergraduate says he has mathematically proven the physical feasibility of a specific kind of time travel. The paper appears in Classical and Quantum Gravity.

🤯 You love time travel. So do we. Let’s nerd out over it together.

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Sep 3, 2020

The Science Advisor on Bill & Ted: Face The Music on Time Travel, Entanglement, And Keanu Reeves

Posted by in categories: media & arts, quantum physics, science, time travel

Spiros Michalakis is the Caltech quantum physicist who served as the science advisor on Bill & Ted: Face The Music and he was kind enough to sit down and chat about quantum physics, the nature of time, and the brilliant minds behind Bill & Ted.

Check out IQIM at http://www.iqim.caltech.edu

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Aug 21, 2020

How to Build a Time Machine in Just 4 e²Q=X Easy Steps

Posted by in category: time travel

Granted, we’re not very good at it. We’re only moving in one direction at a fixed rate — but we’re never in the same moment twice. And while time’s arrow seemingly puts spacetime second helpings out of reach, humans have a habit of breaking the rules.

What if we could do an about-face and discover what came before? Or push past our present pace to see what comes next? Astrophysicist Ron Mallett from the University of Connecticut says he’s got the theoretical receipts to take on time travel.

Wondering how to build a time machine? It takes just 4e2Q=X easy steps! Simple, right?

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Aug 5, 2020

Quantum time travel doesn’t follow Back to the Future rules

Posted by in categories: entertainment, quantum physics, time travel

Time travel movies have different rules about what happens when you start messing around with the timeline. If you’ve ever wondered which ones make the most sense, we may now have an answer. According to experiments using a quantum time travel simulator, reality is more or less “self-healing,” so changes made to the past won’t drastically alter the future you came from – at least, in the quantum realm.

The classic Back to the Future rules of time travel say that whatever you change in the past can have huge effects on the future. That’s why Marty McFly can almost erase his own existence by accidentally stopping his parents from meeting, and why Biff Tannen can get rich by giving his younger self a book of sports scores to bet on.

Other movies handle things differently. In Avengers: Endgame, the superheroes travel back in time to steal versions of the Infinity Stones out of different time periods to revive their fallen friends (look, it doesn’t make much sense unless you’ve seen all 20-something movies). Anyway, they can dabble in the past without ruining the future because the universe has a knack for correcting those paradoxes so that both versions of events did happen.

Jul 31, 2020

Time Travel Simulation Shows Quantum ‘Butterfly Effect’ Doesn’t Exist

Posted by in categories: computing, quantum physics, time travel

Here’s the story – our protagonist rewinds history, locates baby Hitler, and averts global war by putting him on a path to peace … but, oh noes! This sets off a domino chain of events that stops our hero from being born, or worse, kicks off the apocalypse.

Unintended ‘butterfly effect’-style consequences of time travel might be a juicy problem in science fiction, but physicists now have reason to believe in a quantum landscape, tweaking history in this way shouldn’t be a major problem.

Since going back to a previous moment in time is still in the ‘too hard’ basket, a pair of physicists from the Los Alamos National Laboratory in the US went with the next best thing and created a simulation using an IBM-Q quantum computer.

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Jul 12, 2020

Scientists Revive 32,000-Year-Old Plant Right Out of the Pleistocene

Posted by in category: time travel

Reviving a Pleistocene Plant

Thanks Kim K.


A real little time traveler.

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May 13, 2020

Teleportation and traversible wormholes are all real

Posted by in categories: cosmology, particle physics, quantum physics, time travel

Circa 2017


Einstein-Rosen or “ER” bridges, are equivalent to entangled quantum particles, also known as Einstein-Podolsky-Rosen or “EPR” pairs. The quantum connection between wormholes prevents their collapse without involving exotic matter.

The quantum-teleportation format precludes using these traversable wormholes as time machines. Anything that goes through the wormhole has to wait for Alice’s message to travel to Bob in the outside universe before it can exit Bob’s black hole, so the wormhole doesn’t offer any superluminal boost that could be exploited for time travel.

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