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Archive for the ‘cosmology’ category: Page 131

Mar 22, 2023

186,100 miles per second!!! Is black hole propulsion possible?

Posted by in categories: cosmology, space travel

It’s time to explore what might be the ultimate starship! The Kugelblitz Black Hole Starship! Can you really create an artificial black hole? If so, how much energy would it generate, and how fast could it propel a ship across he galaxy? The answers are simply mind-blowing.
#space #blackhole #interstellar.

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Mar 22, 2023

Are We The Creation Of A Type V Civilization? | Unveiled

Posted by in categories: cosmology, futurism

What if we’ll always be at the bottom of the Kardashev Scale? Join us… and find out!

Subscribe for more from Unveiled ► https://wmojo.com/unveiled-subscribe.

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Mar 21, 2023

Research team finds indirect evidence for existence of dark matter surrounding black holes

Posted by in categories: computing, cosmology

Dark matter does not emit or reflect light, nor does it interact with electromagnetic forces, making it exceptionally difficult to detect. Nevertheless, a research team from The Education University of Hong Kong (EdUHK) has proven that there is a substantial amount of dark matter surrounding black holes. The study results are published in the journal The Astrophysical Journal Letters.

The team selected two nearby (A0620-00 and XTE J1118+480) as research subjects, with both considered as binary systems. That is, each of the black holes has a companion star orbiting it. Based on the orbits of the companion stars, observations indicate that their rates of orbital decay are approximately one millisecond (1ms) per year, which is about 50 times greater than the theoretical estimation of about 0.02ms annually.

To examine whether exists around black holes, the EdUHK team applied the “dark matter dynamical friction model”—a theory widely held in academia—to the two chosen binary systems, through computer simulations. The team found that the fast orbital decay of the companion stars precisely matches the data observed.

Mar 21, 2023

Runaway supermassive black hole caught by Hubble

Posted by in category: cosmology

Speeding through the Universe and leaving a wake of new stars, this runaway supermassive black hole is likely the first among thousands.

Mar 20, 2023

The universe has a Hubble constant problem

Posted by in categories: cosmology, futurism

Differences in the way that the Hubble constant—which measures the rate of cosmic expansion—are measured have profound implications for the future of cosmology.

Mar 19, 2023

On the Origin of Time: Stephen Hawking’s mind-blowing final theory

Posted by in category: cosmology

Everything, everywhere, all at once? Forget it – there are ideas about time far more outrageous than simply the multiverse “Who knows where the time goes?” asked Sandy Denny, though as good a question is where it came from in the first place.

Mar 19, 2023

China to launch lobster eye-like X-ray astronomical satellite this year

Posted by in categories: cosmology, physics, satellites

It’s called the Einstein Probe and it’s meant to observe the changing universe.

China has ambitious plans to launch a new X-ray astronomical satellite called the Einstein Probe (EP) at the end of this year. This is according to a report by the ChinaDaily.

“The satellite has entered the final stage of development,” he said at the recent 35th National Symposium on Space Exploration.

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Mar 19, 2023

The fifth force: Is there another fundamental force of nature?

Posted by in categories: cosmology, particle physics

In recent years, a group of Hungarian researchers have made headlines with a bold claim. They say they’ve discovered a new particle — dubbed X17 — that requires the existence of a fifth force of nature.

The researchers weren’t looking for the new particle, though. Instead, it popped up as an anomaly in their detector back in 2015 while they were searching for signs of dark matter. The oddity didn’t draw much attention at first. But eventually, a group of prominent particle physicists working at the University of California, Irvine, took a closer look and suggested that the Hungarians had stumbled onto a new type of particle — one that implies an entirely new force of nature.

Then, in late 2019, the Hungarian find hit the mainstream — including a story featured prominently on CNN — when they released new results suggesting that their signal hadn’t gone away. The anomaly persisted even after they changed the parameters of their experiment. They’ve now seen it pop up in the same way hundreds of times.

Mar 19, 2023

The mind-bending physics of time

Posted by in categories: cosmology, physics

In this Big Think interview, theoretical physicist Sean Carroll discusses the concept of time and the mysteries surrounding its properties. He notes that while we use the word “time” frequently in everyday language, the real puzzles arise when we consider the properties of time, such as the past, present, and future, and the fact that we can affect the future but not the past.

Carroll also discusses the concept of entropy, which is a measure of how disorganized or random a system is, and the second law of thermodynamics, which states that there is a natural tendency for things in the Universe to go from a state of low entropy to high entropy — in other words, from less disorganized to more disorganized. He explains that the arrow of time, or the perceived difference between the past and the future, arises due to the influence of the Big Bang and the fact that the Universe began in a state of low entropy.

Mar 18, 2023

Evidence for the existence of a deeply bound dibaryon, built entirely from beauty quarks

Posted by in categories: cosmology, particle physics

Dibaryons are the subatomic particles made of two baryons. Their formations through baryon-baryon interactions play a fundamental role in big-bang nucleosynthesis, in nuclear reactions including those within stellar environments, and provide a connection between nuclear physics, cosmology and astrophysics.

Interestingly, the , which is the key to the existence of nuclei and provides most of their masses, allows formations of numerous other dibaryons with various combinations of quarks. However, we do not observe them abound—deuteron is the only known stable dibaryon.

To resolve this apparent dichotomy, it is essential to investigate dibaryons and baryon-baryon interactions at the fundamental level of strong interactions. In a recent publication in Physical Review Letters, physicists from the Tata Institute of Fundamental Research (TIFR) and The Institute of Mathematical Science (IMSc) have provided strong evidence for the existence of a deeply bound dibaryon, entirely built from bottom (beauty) quarks.