New Research Suggests That Time Runs Backwards Inside Black Holes

A new research paper published in Physical Review Letters has brought forward a significant new understanding of general relativity laws, and has found some strange physics taking place inside black holes. Specifically, that the direction of time could be reversed within them. Several physical procedures are perfectly symmetric in time. Take a pendulum for instance. If someone shows you a video of a pendulum swinging, you cannot differentiate if the video is actually moving forward or backward. 

Image Credit: An artist's illustration of a supermassive black hole by NASA/CXC/M.Weiss, via Flickr. CC BY-NC 2.0

But some processes are not symmetric at all. We can tell that a pendulum will ultimately slow because of friction and we know that it was triggered at some point, so we can give a temporal direction to physics. The directionality of time and our view of it was called the "Arrow of Time" by British astronomer Arthur Eddington, and it has been connected to the entropy of the cosmos. 

Event horizons ascend from the mathematics of general relativity, but the simplest mathematical explanation of an event horizon leads to a paradox. Event horizons must contain all the history of the cosmos, from the Big Bang to its death. This generates numerous complications as it assumes that the universe must be deterministic and that past and future are inscribed on the "skin" of black holes. While this paradox doesn’t affect explanations and forecasts of the physics of black holes, it is evidently a limiting factor in correctly understanding how black holes work.

The new research tries to fill this important gap in black hole physics. The elementary notion of this paper is grounded on the holographic principle. According to the author of the paper the event horizon is essentially a holographic screen, a hypersurface with a precise entropy. You can have two kinds of holographic screens, past holographic screens and future holographic screens, liable on whether the entropy inside the surface is increasing or decreasing.

Study author Netta Engelhardt told "Holographic screens are in a sense a local boundary to regions of strong gravitaitonal fields. Future holographic screens correspond to gravitational fields which pull matter together... whereas past holographic screens correspond to regions which spread matter out..."

If this principle is applied to the cosmos as a whole, the entropy arrow is steady with the second law of thermodynamics. Entropy increases, time moves forward. But the use of the law onto black holes yields a interesting outcome. Within a black hole, entropy decreases (things become more structured) and thus thermodynamically time runs backward. 

Although this is an exciting consequence, the paper is important because it verifies the first area law in general relativity and it might have solved a long-standing problem in black holes physics.
This post was written by Umer Abrar. To contact the author of this post, write to or add/follow him on facebook :

New Research Suggests That Time Runs Backwards Inside Black Holes New Research Suggests That Time Runs Backwards Inside Black Holes Reviewed by Umer Abrar on 11/03/2015 Rating: 5


  1. total nonsense of what happens in black hole. what will they do with it?
    go back in time? lol , they cant send anything .

  2. beyond the event horizon is EXTREMELY dense, pure, broken down and compressed energy of matter... ... it is not just open gaseous type space beyond... the black "hole" is not a hole... it is the densest most solid mass in the universe... you are not just going to penetrate it with "gravity" .. I am trying to explain my understanding... you have to start with your understanding of the singularity... it isn't like a ghost type phenomenon... it is a physical solid object... soooo dense that even a neutron star cannot compare... THERE is NOTHING going to just FORCE ITS WAY INSIDE... not until being broken down for a million years... you don't just enter a black "hole"... it is NOT an empty space... or a wormhole ...
    the event horizon is not like a magnet, it is a spherical forced field... it is the single point where the barrier of the field of the singularity persist... all energy beyond that point is compressed soo intensely that even "C" has no bearing... nothing is "frozen in time" but is broken down to a base particles such as Higgs and locked into an extremely dense but almost fluid like in appearance in my opinion... if we were able to actually observe it up close... similar to surface of the Sun... as it is drawing energy inward . again, ... it can only breakdown sooo much matter at any givin moment... but it's pull will continue on the surrounding matter of the galaxy... the matter will continue to be drawn inward forming the spiral galaxies we observe. even when it cannot be broken down, it will continue to be pulled inward... as more matter builds up around the primer fields it slowely begins circulating upward... over billions of Earth years, that is a lot of matter building upward... the force of the singularity has only gotten stronger... after billions of years the event horizon has slowely worked its way up to the top and bottom... towards the pole points... as it gets closer to the top, everything is "crunched" or compressed together so much tighter... then tighter and then tighter as the cirlcle closes in... to a point where it reaches an exact point where all that energy from all sides meets... the force of the singularity spinning and the intense density within the event horizon... inward into singularity is NOT the path of least resistance... the path of least resistance would be outward into space forming Quasar jets... the pull of the singularity is nothing compared to the physical energy release compressed within the E.H at the poles... people seems to confuse broken down superfast moving energy as if it is empty inside... the event horizon is the barrier of density beyond comprehension.... ALMOST beyond comprehension.... The pull cannot force more matter in than it can readily breakdown... it is like pouring water on a diamond and wondering why the water isn't going inside the diamond... the confusing part is the name I think... there is NOTHING resembling a "hole" about a black hole... it is a singularity point... beyond that event horizon is the most broken down pure compressed energy of the universe... the pull that it creates is nothing compared to it... the energy and dust of space being pulled inward cannot penetrate into like a knife through butter... subatomic breakdown takes millions of years of working its way don't just cross the E.H. in a ship... you get drawn inward and over time you are broken down to nothing... you would not reach the top or pole point freated by the circulating matter working it's way upward... it will reach a point at the top of the event horizon then explode outward... it cannot... CANNOT penetrate inward..

    1. Very informative. thank u for sharing the knowledge.

    2. I have been searching for an answer to know whether it is possible to create a zero- gravity (i.e nullifying the gravitational force) zone in a small in-door space on earth? If so, how easy /complex to achieve this. Kindly help me. (I am sorry for posting this question not relevant to the original discussion. Thanks much.

    3. Actually, you've got a mostly sound conceptualization of what the singularity itself is. But the event horizon is merely the point at which spacetime becomes so strongly curved, or distorted, by the singularity's gravity that the escape velocity exceeds C. And I would have to say that I personally don't believe it takes any significant amount of time at all for the infalling matter and energy to be incorporated into (or onto may be more accurate) the body of the singularity. Though, the extreme distortion of spacetime surrounding the monster may make it appear that way to an outside observer. But if the observer were to fall into it themselves, it would be perceived as practically instantaneous.
      The supernova explosions that create stellar mass singularities do so in a literal flash. Otherwise the singularity would not have the extreme pressure required to push it beyond the tipping point and into a singularity in the first place. The difference between instant and an eon beyond the event horizon, as Einstein would say, is merely Relative.


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