A bizarre theory could explain dark matter.
Mirror Image
The Big Bang didn’t just result in our familiar universe, according to a mind-bending new theory — it also generated a second “anti-universe” that extended backwards in time, like a mirror image of our own.
A new story in Physics World explores the new theory, which was proposed by a trio of Canadian physicists who say that it could explain the existence of dark matter.
In September 2018, physicists at the University of Tokyo were trying to create insanely strong magnetic energy in an indoor environment. They expected an explosion. But they didn’t know it would be so powerful that it would knock an iron door off its hinges.
How did scientists accidentally generate the longest-lasting and strongest controllable magnetic energy field in human history?
Forget the past.
However, a study from Berkley University suggests that entering a specific black hole in the universe can actually erase everything that had happened in a person’s past. Not only that, it could also give humans infinite futures!
But, how is that even possible?
According to NASA, “a black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because the matter has been squeezed into a tiny space. This can happen when a star is dying.” In fact, indy100 mentioned in their article that, physicists have created a theoretical term called “cosmic censorship” to further explain the clash between the rules of the universe and the lawlessness of black holes. While it’s possible to survive a black hole, you should also keep in mind that it has the ability to “spaghettify” you.
Physicists at MIT have for the first time calculated the pressure distribution inside a proton. One incredible finding by the researchers is that the core of a proton generates pressures greater than what’s found inside a neutron star. That discovery is so incredible because a neutron star is among the densest known objects in the universe.
A new map of the night sky using the Low Frequency Array @LOFAR telescope charts hundreds of thousands of previously unknown galaxies.
The international team behind the unprecedented space survey said their discovery literally shed new light on some of the Universe’s deepest secrets, including the physics of black holes and how clusters of galaxies evolve.
According to most astrophysicists, once you enter a black hole, that’s it for you: gravity will drag you to the singularity — a one-dimensional infinitely small space containing a huge mass — at the speed of light. Then, the black hole will ‘spaghettify you”. Nice.
However, a new study from Berkley University theorises not only that humans could survive going into a black hole, but that their past could be erased, giving way to “infinite futures”.
Physicist Peter Hintz argues that if a human traveller entered a “relatively benign” black hole, they might be able to shed the natural laws of physics — and survive.
An invisible force is having an effect on our Universe. We can’t see it, and we can’t detect it — but we can observe how it interacts gravitationally with the things we can see and detect, such as light.
Now an international team of astronomers has used one of the world’s most powerful telescopes to analyse that effect across 10 million galaxies in the context of Einstein’s general relativity. The result? The most comprehensive map of dark matter across the history of the Universe to date.
It has yet to complete peer-review, but the map has suggested something unexpected — that dark matter structures might be evolving more slowly than previously predicted.
In a finding that runs counter to a common assumption in physics, researchers at the University of Michigan ran a light emitting diode (LED) with electrodes reversed in order to cool another device mere nanometers away.
The approach could lead to new solid-state cooling technology for future microprocessors, which will have so many transistors packed into a small space that current methods can’t remove heat quickly enough.
“We have demonstrated a second method for using photons to cool devices,” said Pramod Reddy, who co-led the work with Edgar Meyhofer, both professors of mechanical engineering.