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GRAVITATIONAL WAVES? WHAT’S THE POINT? TIME TRAVEL, FRIENDS.

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GRAVITATIONAL WAVES? WHAT’S THE POINT? TIME TRAVEL, FRIENDS.

Space-time Travel Black General

Kip Thorne of the acclaimed Laser Interferometer Gravitational-wave Observatory (LIGO) researchers deflected such assertions about his team’s finding at the press release by saying, “I don’t think [our detection of gravitational waves] is going to bring us any closer to being able to do time travel. ”

David Spergel is a theoretical physicist and chair of Princeton University’s astronomy and astrophysics department and he’s one such admirer. Spergel concedes there is a long way to go before man comprehends the true plausibility of time travel, but he believes general relativity will be essential to that discovery, if the stars align for it.

“There are still a lot of ifs there, starting with the existence of negative mass particles and wormholes being stable,” Professor Spergel tells The Daily Beast. “But general relativity’s equations—which gave us black holes, and we see very strong evidence for them with LIGO—are telling us that that would permit time travel.”

Einstein explains gravity as the product of mass manipulating the fabric of space-time. This fabric is known as “space-time” because the two concepts are inseparably woven together throughout the universe, much in the same way that a mile is roughly six minutes away from a good runner.

Like a bowling ball sitting amid a trampoline, black holes are massive objects that warp the fabric of space-time. Anything (say, a golf ball) that approaches a black hole (the bowling ball) gets faster the closer it gets because that is where the fabric of space-time (the trampoline) is most warped.

It’s proof that gravitational waves exist, that black holes exist, and that two of the fat monsters—at 29 and 36 times the mass of our sun—smashed into each other 1.3 billion years ago in a collision so violently it sent out ripples across the universe like a brick thrown into a pool. Most importantly, it’s proof that Einstein’s most radical prediction, which mathematically allows for time travel, was correct in a remarkably precise way.

Sir Arthur Eddington launched Einstein to international stardom after his 1919 observations of a solar eclipse supported general relativity over classical Newtonian physics, and there have been myriad similar affirmations since. Most notably, Joseph Taylor and Russell Hulse won a Nobel Prize in 1993 for discovering the effects of gravitational waves generated from a binary pulsar’s spin.

The greater the warping of space-time, the closer point A on one side of a black hole gets to point Z on the other side. Theoretically, gravity can be so intense around a supermassive black hole that points A and Z can actually touch, allowing for points B through Y to be bypassed altogether.

For time travel to be possible, “Trajectories through space-time have to be bent enough that they can close back on themselves—strong gravitational fields strongly distort the fabric of space and time,” Turner explains. “If the field is strong enough and complicated enough, there can exist paths through that distorted space-time that intersect themselves at different times—meaning you could travel along a path that connects points in the future to points in the past.“

What’s that look like? Drop a heavy enough dumbbell in a leg of pantyhose, and you’ll see the hose stretch so much that it contracts near the opening until the sides touch. If you have to spin the dumbbell to make it happen, so be it. Black holes are the most violent vortexes in the universe after all ( via thedailybeast.com ).

General relativity has some really interesting mathematically allowed features, which includes things like warp space-time that potentially allows very fast space travel—travel even faster than what looks locally like the speed of light,” says Spergel. “Whether it’s possible to take advantage of those solutions is not clear yet, but this observation tells us that we should use general relativity.”

 

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