Menu

Blog

Archive for the ‘cosmology’ category: Page 133

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.


Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily. Never email yourself a file again!

Mar 13, 2023

Surviving An Apocalypse

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

Go to https://brilliant.org/IsaacArthur/ to get a 30-day free trial + the first 200 people will get 20% off their annual subscription.
If the end of the world is nigh, it may be too late to avert a catastrophe. So what can we do to mitigate the damage or recover after a cataclysm comes?

Visit our Website: http://www.isaacarthur.net.
Join Nebula: https://go.nebula.tv/isaacarthur.
Support us on Patreon: https://www.patreon.com/IsaacArthur.
Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur.
Facebook Group: https://www.facebook.com/groups/1583992725237264/
Reddit: https://www.reddit.com/r/IsaacArthur/
Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.
SFIA Discord Server: https://discord.gg/53GAShE

Continue reading “Surviving An Apocalypse” »

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.

Mar 9, 2023

How Do Supermassive Black Holes Form? Study Reveals Huge Galaxy Mergers During Cosmic Noon Play an Important Role in This Celestial Formation

Posted by in categories: cosmology, evolution

The cosmos is full of mysteries, one of which is the existence of supermassive black holes. Though much effort has been granted to these celestial mysteries, the evolution and formation of such supermassive black holes are quite hard to explain.

Supermassive Black Holes

Continue reading “How Do Supermassive Black Holes Form? Study Reveals Huge Galaxy Mergers During Cosmic Noon Play an Important Role in This Celestial Formation” »

Mar 9, 2023

Astronomers Just Discovered An Exotic Black Hole Deemed A ‘Needle In A Haystack’

Posted by in category: cosmology

Astronomers have found what they are calling a “cosmic needle in a haystack” in a galaxy next to our Milky Way. It is a dormant black hole that seems to have formed without the explosion of a dead star.

Researchers said on Monday that this black hole is different from all the others that we know of because it is “X-ray quiet.” This means that it doesn’t make a lot of X-ray radiation, which would indicate that it is eating nearby matter with its huge gravitational pull, and that it didn’t form in a supernova.

Black holes are very dense things with so much gravity that not even light can get out.