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This was the second scholarly paper i saw this year about time travel. Posting because there isn’t nearly enough serious interest about Time Travel in the science community.

Traversable acausal retrograde domains in spacetime.
Benjamin K Tippett1 and David Tsang2
Published 31 March 2017 •

Abstract
In this paper we present geometry which has been designed to fit a layperson’s description of a ‘time machine’. It is a box which allows those within it to travel backwards and forwards through time and space, as interpreted by an external observer. Timelike observers travel within the interior of a ‘bubble’ of geometry which moves along a circular, acausal trajectory through spacetime. If certain timelike observers inside the bubble maintain a persistent acceleration, their worldlines will close.

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Scholarly paper on building a time machine:

“Quantum teleportation through time-shifted AdS wormholes.

(Submitted on 30 Aug 2017)

Based on the work of Gao-Jafferis-Wall and Maldacena-Stanford-Yang, we observe that the time-shifted thermofield states of two entangled CFTs can be made traversable by an appropriate coupling of the two CFTs, or alternatively by the application of a modified quantum teleportation protocol. This provides evidence for the smoothness of the horizon for a large class of entangled states related to the thermofield by time-translations. The smoothness of these states has some relevance for the firewall paradox and the proposal that some observables in quantum gravity may be state-dependent. We notice that quantum teleportation through these entangled states could be used in a laboratory setup to implement a time-machine, which allows the observer to travel far in the future.”

Continue reading “Quantum teleportation through time-shifted AdS wormholes” | >

Finally Mach Effect propulsion had gotten useful levels of funding and will get a validation test with NASA. They reported interim results and have made good progress. Nextbigfuture covered the announcement of funding by NASA NIAC for mach effect propulsion in April 2017. They now have presented the new experiments and path forward with the needed materials to clearly prove significant propulsion and unambiguous space experiments. They have advanced the experimental work and will get test state-of-the-art PIN-PMN-PT materials. They have demonstrated a Force versus Voltage scaling relationship that is consistent with the theory. They have a roadmap to continue.

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Just five years ago, artificial intelligence-enabled computers could barely recognize images fed to them, much less analyze them anything like people can. But suddenly, they’ve turned the tables.

“In 2011 their error rate was 26 percent,” says Jeff Dean, chief of the Google Brain project, which along with other tech giants has helped lead a recent revolution in image recognition as well as speech recognition and self-driving cars. Now, he says, computers’ ability to view and analyze images (pictured) exceeds what human eyes can do.

“If you ’ d have told me that would be a possible just a few years ago, I would ’ ve never believed you,” Dean said during an appearance at a research event in Heidelberg, Germany. But thanks to AI-enabled computer vision advances, computers “can now see … and that has opened our eyes (about) what is possible.”

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Huge queues formed at airports around the world today after an IT system vital to scores of airlines crashed due to one faulty switch.

A program run by a huge tech firm called Amadeus is behind computers for British Airways, Air France, Lufthansa and other carriers, who use it every day to check passengers onto flights.

But the system was sent into meltdown today when the firm accidentally triggered a computer crash, causing long lines of upset passengers to form at airports across the globe.

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NASA and the Russian space agency Roscosmos have announced a new partnership for human exploration of the moon and deep space. Both agencies signed a joint statement on cooperation today (Sept. 27) at the 68th International Astronautical Congress in Adelaide, Australia.

The decision to partner with Russia on human missions to the moon and beyond came about as NASA continues to flesh out ideas for its “deep-space gateway” concept, a mission architecture designed to send astronauts into cislunar space — or lunar orbit — by the 2020s. Traveling to and from cislunar space will help NASA and its partners gain the knowledge and experience necessary to venture beyond the moon and into deep space.

A crewed mission to the moon and ultimately deep space would likely involve NASA’s gigantic new Space Launch System (SLS) rocket and the Orion space capsule. “This plan challenges our current capabilities in human spaceflight and will benefit from engagement by multiple countries and U.S. industry,” NASA officials said in a statement. [Photos: NASA’s Space Launch System for Deep Space Flights].

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Lockheed Martin has revealed plans to set up a ‘Mars base camp’ orbiting the red planet — and says it hopes to launch it within ten years.

Using NASA’s Orion spacecraft as the command deck, the orbiting outpost could give astronauts the ability to operate rovers and drones on the surface in real time, helping us better understand the Red Planet and plan for manned missions.

‘The time is now,’ Lockheed Martin said in a video revealing the project at the International Astronautical Congress (IAC) in Adelaide, Australia, where it also showed off a lander that could eventually take astronauts form the station to the red planet’s surface.

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