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Archive for the ‘cosmology’ category: Page 124

Mar 15, 2023

Shadows in the Big Bang Afterglow Reveal Invisible Cosmic Structures

Posted by in category: cosmology

Over the course of its nearly 14-billion-year journey, the light from the CMB has been stretched, squeezed and warped by all the matter in its way. Cosmologists are beginning to look beyond the primary fluctuations in the CMB light to the secondary imprints left by interactions with galaxies and other cosmic structures. From these signals, they’re gaining a crisper view of the distribution of both ordinary matter — everything that’s composed of atomic parts — and the mysterious dark matter. In turn, those insights are helping to settle some long-standing cosmological mysteries and pose some new ones.

“We’re realizing that the CMB does not only tell us about the initial conditions of the universe. It also tells us about the galaxies themselves,” said Emmanuel Schaan, also a cosmologist at SLAC. “And that turns out to be really powerful.”

Mar 14, 2023

Sizes of Black Holes: How Big is a Black Hole?

Posted by in categories: computing, cosmology, information science, quantum physics

Year 2014 face_with_colon_three If black holes have infinitely small sizes and infinitely density this also means that string theory would also solve the infinitely small problem because now we know that infinitely small sizes exist and if that exists then so does infinite energy from super string essentially filling out the rest of the mystery of the God equation. This means that computers could be infinitely small aswell saving a ton of space aswell.


If you’ve wondered how big is a black hole? then you’ve come to the right place! Learn about the sizes of black holes and the multi-layered answer.

Mar 14, 2023

A Second Big Bang May Have Flooded the Universe With Dark Matter

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

The Big Bang may have not been alone.


The Big Bang may not have been alone. The appearance of all the particles and radiation in the universe may have been joined by another Big Bang that flooded our universe with dark matter particles. And we may be able to detect it.

Continue reading “A Second Big Bang May Have Flooded the Universe With Dark Matter” »

Mar 14, 2023

Researchers Say They’ve Come Up With a Blueprint for Creating a Wormhole in a Lab

Posted by in categories: computing, cosmology, particle physics, quantum physics

Published in the journal Quantum Science and Technology, Saleh’s research focused on a novel quantum computing technique that should — at least on paper — be able to reconstitute a small object across space “without any particles crossing.”

While it’s an exciting prospect, realizing his vision will require a lot more time and effort — not to mention next-generation quantum computers that haven’t been designed, let alone built yet. That is if it’s even possible at all.

Counterportation can be achieved, the study suggests, by the construction of a small “local wormhole” in a lab — and as the press release notes, plans are already underway to actually build the groundbreaking technology described in the paper.

Mar 13, 2023

Is The Multiverse Real? The Science Behind ‘Everything Everywhere All At Once’

Posted by in categories: cosmology, entertainment, science

Do multiverses exist? Is our universe one of many? The multiverse is a key plot device in the hit movie Everything Everywhere All At Once.

But does the multiverse have any basis in science?


Oscars 2023: Cosmologists are trying to figure out if there’s a group of multiple universes running parallel to each other—as seen in the hit movie “Everything Everywhere All At Once”—and whether they might be habitable.

Continue reading “Is The Multiverse Real? The Science Behind ‘Everything Everywhere All At Once’” »

Mar 13, 2023

2302.03710–1.pdf

Posted by in categories: cosmology, quantum physics

Bouncing cosmology from nonlinear dark energy with two cosmological constants.


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Mar 13, 2023

Surviving An Apocalypse

Posted by in categories: asteroid/comet impacts, climatology, cosmology, existential risks, robotics/AI

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Mar 12, 2023

Scientists created a black hole in an unique lab experiment. Then, it started to glow

Posted by in category: cosmology

This experiment can be used to solve several questions that scientists have been seeking the answers to for years.

Mar 12, 2023

How Einstein tried to model the shape of the Universe

Posted by in categories: cosmology, information science, mathematics, quantum physics

To keep his Universe static, Einstein added a term into the equations of general relativity, one he initially dubbed a negative pressure. It soon became known as the cosmological constant. Mathematics allowed the concept, but it had absolutely no justification from physics, no matter how hard Einstein and others tried to find one. The cosmological constant clearly detracted from the formal beauty and simplicity of Einstein’s original equations of 1915, which achieved so much without any need for arbitrary constants or additional assumptions. It amounted to a cosmic repulsion chosen to precisely balance the tendency of matter to collapse on itself. In modern parlance we call this fine tuning, and in physics it is usually frowned upon.

Einstein knew that the only reason for his cosmological constant to exist was to secure a static and stable finite Universe. He wanted this kind of Universe, and he did not want to look much further. Quietly hiding in his equations, though, was another model for the Universe, one with an expanding geometry. In 1922, the Russian physicist Alexander Friedmann would find this solution. As for Einstein, it was only in 1931, after visiting Hubble in California, that he accepted cosmic expansion and discarded at long last his vision of a static Cosmos.

Einstein’s equations provided a much richer Universe than the one Einstein himself had originally imagined. But like the mythic phoenix, the cosmological constant refuses to go away. Nowadays it is back in full force, as we will see in a future article.

Mar 9, 2023

X-rays reveal how 450-year-old Tycho supernova became a giant cosmic particle accelerator

Posted by in categories: cosmology, particle physics

In new research, astronomers have mapped the magnetic field in the historic Tycho supernova remnant that accelerates charged particles close to the speed of light.