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Archive for the ‘cosmology’ category: Page 140

Jan 3, 2023

A black hole is burping radiation and scientists are trying to find out why

Posted by in category: cosmology

Complementing data with NASA’s Chandra X-Ray Observatory provided additional insights.

An international collaboration of researchers used observations from the Green Bank Telescope (GBT) to find out more about a supermassive black hole that mysteriously gives out bubbles of radiation, a press release said.

Supermassive black holes are often seen at the heart of galaxy clusters in the centers of enormous galaxies. The atmospheres of these galaxy clusters are filled with hot plasma that can exceed temperatures of 50 million degrees Celsius. Over long periods of time, these temperatures cool down relatively, which allows the formation of new stars.

Jan 3, 2023

A 107-year-old Einstein theory on the origin of the universe is absolutely Right

Posted by in category: cosmology

Read more about A 107-year-old Einstein theory on the origin of the universe is absolutely Right.

Jan 3, 2023

We could get messages back from spacecraft sent through a wormhole

Posted by in category: cosmology

A simulation of a probe sent to the other side of a wormhole shows it could send speedy messages back before the hole closes and the probe is lost.

Jan 2, 2023

If you could see a black hole, it might look like a cosmic koosh ball

Posted by in categories: cosmology, physics

Year 2022 face_with_colon_three


Since the discovery of black holes, they have inspired images of the universe’s extremities in both scientists and storytellers. Their immense gravity — sucking in any matter and light unfortunate enough to come within grabbing distance — conjures images of crushing death and infinite possibility.

That same gravity, however, creates a well which consumes indiscriminately and from whence nothing can ever emerge. The only trouble is that isn’t the case. Among Stephen Hawking’s many accomplishments was the discovery that black holes actually radiate very slowly and will eventually evaporate. This discovery, while enough to make Hawking famous, threw a wrench in contemporary astrophysics by creating a paradox.

Continue reading “If you could see a black hole, it might look like a cosmic koosh ball” »

Jan 2, 2023

Primordial plasma from the Big Bang recreated in particle accelerator experiments

Posted by in categories: cosmology, evolution, particle physics

Year 2021 face_with_colon_three


“This [study] shows us the evolution of the QGP and eventually [could] suggest how the early universe evolved in the first microsecond after the Big Bang,” said co-author You Zhou, an associate professor at the Niels Bohr Institute, University of Copenhagen in Denmark in an official statement.

“First the plasma that consisted of quarks and gluons was separated by the hot expansion of the universe. Then the pieces of quark reformed into so-called hadrons. A hadron with three quarks makes a proton, which is part of atomic cores. These cores are the building blocks that constitutes earth, ourselves and the universe that surrounds us.”

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Jan 1, 2023

Scientists claim to have found a portal to the fifth dimension

Posted by in categories: cosmology, particle physics

In a new study, scientists say they can explain dark matter by positing a particle that links to a fifth dimension.

(Updated version of the previous article.)

While the “warped extra dimension” (WED) is a trademark of a popular physics model first introduced in 1999, this research, published in The European Physical Journal C, is the first to cohesively use the theory to explain the long-lasting dark matter problem within particle physics.

Jan 1, 2023

New measurements of galaxy rotation lean toward modified gravity as an explanation for dark matter

Posted by in categories: cosmology, particle physics

Although dark matter is a central part of the standard cosmological model, it’s not without its issues. There continue to be nagging mysteries about the stuff, not the least of which is the fact that scientists have found no direct particle evidence of it.

Despite numerous searches, we have yet to detect . So some astronomers favor an alternative, such as modified Newtonian dynamics (MoND) or modified . And a new study of galactic rotation seems to support them.

The idea of MoND was inspired by galactic rotation. Most of the visible matter in a galaxy is clustered in the middle, so you’d expect that stars closer to the center would have faster orbital speeds than stars farther away, similar to the planets of our solar system. What we observe is that stars in a galaxy all rotate at about the same speed. The rotation curve is essentially flat rather than dropping off. The dark matter solution is that galaxies are surrounded by a halo of invisible matter, but in 1983 Mordehai Milgrom argued that our gravitational model must be wrong.

Jan 1, 2023

Origin of NASA (National Aeronautics Space Agency)

Posted by in categories: cosmology, engineering, evolution

When it comes to achieving incredible feats of aerospace engineering, Exploring the wonders of the universe, And realizing the dreams of astronauts from around the world.

There’s one organization that stands above all others. This is the Evolution of NASA. In this article, we will cover the origins of NASA.

Jan 1, 2023

Big gulp! 2 black holes swallow neutron stars

Posted by in category: cosmology

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Dec 31, 2022

How China is building a parallel generative AI universe

Posted by in categories: cosmology, robotics/AI

Chinese tech companies rush to match Stable Diffusion and DALL-E 2, but roadblocks lie ahead.

The gigantic technological.

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