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Archive for the ‘cosmology’ category: Page 3

Oct 13, 2020

Black hole kills star

Posted by in category: cosmology

Telescopes have captured the rare light flash from a dying star as it was ripped apart by a supermassive black hole.

Oct 13, 2020

Magnetic Levitation of Gas Clouds Near Black Holes Considered as Magnets

Posted by in category: cosmology

Magnetic fields are far stronger and more important than gravity in forming stars and galaxies. Contrary to black hole propaganda, magnetic fields increase in strength the nearer to the center. There just is not a gravity center of mass to earth based reality in outer space.

Oct 13, 2020

Black hole “crystals” as seeds of structure formation in the early Universe

Posted by in categories: cosmology, existential risks, particle physics

Circa 1994


It is generally accepted that structure formed in the matter dominated Universe, for obvious reasons. In this paper, we would like to suggest an alternate theory: that structure could have formed in the radiation dominated Universe if it was “protected” from destruction. This protection is envisioned as a “crystal”, of sorts, made up of primordial black holes (PBH’s), which form a cavitation into which any matter particles in the nucleosynthesis period of the Universe (around 100 seconds after the Big Bang) could have taken refuge. A sort of oasis in a sea of radiation. Such a scenario could solve several problems in cosmology, namely: how matter got a foot-hold over anti-matter in the Universe; the structure/galaxy formation problem; and possibly suggest ideas on the gamma-ray count and distribution.

Oct 11, 2020

The Largest Black Holes in the Universe Formed in a Snap — Then Stopped

Posted by in category: cosmology

The biggest, oldest black holes in the universe shouldn’t technically exist. A new study provides fresh evidence for the weird, “direct collapse” process that may have made them.

Oct 8, 2020

Another universe existed before ours – and energy from it is coming out of black holes, says Nobel Prize winner

Posted by in category: cosmology

Sir Roger Penrose also claims that another universe will exist after this one.

Oct 7, 2020

Dark Matter Particles the Size of Planets? –“Yes” Say ‘Cold-Model’ Physicists

Posted by in categories: cosmology, particle physics

“At first, we thought it was absurd. How else could you respond to the idea that black holes generate swirling clouds of planet-sized particles that could be the dark matter thought to hold galaxies together? We tend to think about particles as being tiny but, theoretically, there is no reason they can’t be as big as a galaxy,” said theoretical physicist Asimina Arvanitaki, at the Perimeter Institute for Theoretical Physics referring to the heated debate about the standard model for dark matter that proposes that it is ‘cold,’ meaning that the particles move slowly compared to the speed of light which is tied to the mass of dark matter particles. The lower the mass of the particle, the ‘warmer’ it is and the faster it will move.

On January 9, NASA physicists using the Hubble Space Telescope reported that although the type of particle that makes up dark matter is still a mystery, a compelling observational test for the cold dark matter passed “with flying colors,” The NASA team used a new “cosmic magnifying glasses” technique that found that dark matter forms much smaller clumps than previously known, confirming one of the fundamental predictions of the widely accepted “cold dark matter” theory.

Physicists at the University of California, Davis, taking the temperature of dark matter, the mysterious substance that makes up about a quarter of our universe now report that the model of cold (more massive) dark matter holds at very large scales” said Chris Fassnacht, a physics professor at UC Davis, “but doesn’t work so well on the scale of individual galaxies.” That’s led to other models including ‘warm’ dark matter with lighter, faster-moving particles and ‘hot’ dark matter with particles moving close to the speed of light that have been ruled out by observations.

Continue reading “Dark Matter Particles the Size of Planets? --‘Yes’ Say ‘Cold-Model’ Physicists” »

Oct 7, 2020

An earlier universe existed before the Big Bang, and can still be observed today, says Nobel winner

Posted by in categories: cosmology, futurism

O,.o.


Sir Roger Penrose: ‘The Big Bang was not the beginning. There was something before, and that something is what we will have in our future’

Oct 7, 2020

Nobel Prize in Physics Awarded to 3 Scientists for Work on Black Holes

Posted by in categories: cosmology, physics

The prize was awarded half to Roger Penrose for showing how black holes could form and half to Reinhard Genzel and Andrea Ghez for discovering a supermassive object at the Milky Way’s center.

Oct 7, 2020

We Now Have Proof a Supernova Exploded Perilously Close to Earth 2.5 Million Years Ago

Posted by in category: cosmology

In its 4.5 billion year history, Earth has had to run the gauntlet. Numerous catastrophes have imperilled the planet, from massive impacts, to volcanic conflagrations, to frigid episodes of snowball Earth. Yet life persists.

Among all of the hazards that threaten a planet, the most potentially calamitous might be a nearby star exploding as a supernova.

Continue reading “We Now Have Proof a Supernova Exploded Perilously Close to Earth 2.5 Million Years Ago” »

Oct 6, 2020

Nobel Prize for Physics awarded to scientists for discovering ‘most exotic objects in the universe’

Posted by in categories: cosmology, physics

Three scientists have won this year’s Nobel Prize in Physics for advancing our understanding of black holes, the all-consuming monsters that lurk in the darkest parts of the universe.

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