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Archive for the ‘cosmology’ category: Page 9

Sep 18, 2024

Professor Proposes how a Black Hole in Orbit Around a Planet could be a Sign of an Advanced Civilization

Posted by in categories: cosmology, existential risks, mathematics

In 1971, English mathematical physicist and Nobel-prize winner Roger Penrose proposed how energy could be extracted from a rotating black hole. He argued that this could be done by building a harness around the black hole’s accretion disk, where infalling matter is accelerated to close to the speed of light, triggering the release of energy in multiple wavelengths.

Since then, multiple researchers have suggested that advanced civilizations could use this method (the Penrose Process) to power their civilization and that this represents a technosignature we should be on the lookout for.

Examples include John M. Smart’s Transcension Hypothesis, a proposed resolution to the Fermi Paradox where he suggested advanced intelligence may migrate to the region surrounding black holes to take advantage of the energy available.

Sep 18, 2024

Our reality seems to be compatible with a quantum multiverse

Posted by in categories: cosmology, quantum physics

Even though the strange behaviour we observe in the quantum realm isn’t part of our daily lives, simulations suggest it is likely our reality could be one of the many worlds in a quantum multiverse.

By Karmela Padavic-Callaghan

Sep 18, 2024

Black hole pairs may unveil new particles

Posted by in categories: cosmology, particle physics

In a paper published in Physical Review Letters this week, physicists from Amsterdam and Copenhagen argue that close observations of merging black hole pairs may unveil information about potential new particles. The research combines several new discoveries made by UvA scientists over the past six years.

Sep 17, 2024

Elevating the search for dark matter

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

Some recent dark matter experiments have begun employing levitated optomechanical systems. Kilian et al. explored how levitated large-mass sensors and dark matter research intersect.

Levitated sensors are quantum technology platforms that use magnetic fields, electric fields, or light to levitate and manipulate particles, which become very sensitive to weak forces. These sensors are especially well suited for detecting candidates in regimes where current large-scale experiments suffer limitations, such as ultralight and certain hidden-sector candidates.

The authors discussed how these advantages make levitated sensors, including optically trapped silica nanoparticles, magnetically trapped ferromagnets, and levitated superconducting particles, ideal for detecting different dark matter candidates.

Sep 16, 2024

Is the Big Bang Theory Losing Ground? New Evidence Emerges

Posted by in category: cosmology

Explore the latest challenges to the Big Bang theory and discover how new observations are reshaping our understanding of the universe’s origins.

Sep 16, 2024

Astronomers found the largest water reservoir in the universe

Posted by in category: cosmology

Astronomers have identified the largest and most distant water reservoir ever detected in the universe. This immense collection of water, equivalent to 140 trillion times the water in Earth’s oceans, surrounds a quasar over 12 billion light-years away.

“The environment around this quasar is very unique in that it’s producing this huge mass of water,” stated Matt Bradford from NASA’s Jet Propulsion Laborator y. “It’s another demonstration that water is pervasive throughout the universe, even at the very earliest times.” Bradford leads one of the teams behind this groundbreaking discovery. Their research, partially funded by NASA, appears in the Astrophysical Journal Letters.

Quasars are powered by enormous black holes that consume surrounding gas and dust, emitting vast amounts of energy. The quasar in question, APM 08279+5255, harbors a black hole 20 billion times more massive than the sun and produces energy equivalent to a thousand trillion suns.

Sep 15, 2024

Anti-Dark Matter and Quasi-Stars

Posted by in categories: cosmology, futurism

An exploration of the idea of anti-dark matter and quasi stars and other objects that cannot exist in the universe right now, but may in the future and may have in the past.

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Continue reading “Anti-Dark Matter and Quasi-Stars” »

Sep 15, 2024

Why Scientists Think We Might Live Inside a Black Hole | Space Documentary

Posted by in categories: cosmology, education, physics

Have you ever wondered if our universe is more mysterious than we could ever imagine? Some scientists believe that we might be living inside a black hole! This mind-bending idea challenges everything we know about space, time, and the very fabric of reality. Join us as we dive deep into the groundbreaking theories and explore the evidence suggesting that our universe could be the interior of a massive black hole. Learn about the fascinating connection between black holes and the Big Bang, the nature of singularities, and the surprising ways in which physics supports this extraordinary concept. Could the secret to understanding our universe lie within these cosmic giants? Watch now to find out!

Sep 15, 2024

Interstellar Travel Is Possible If We Break Into a Higher Dimension, Scientists Say

Posted by in categories: cosmology, quantum physics, space travel, time travel

And luckily for us, quantum physicists think they know how to reach that higher dimension.

Sep 15, 2024

Astronomers Discover a Rare Black Hole That Defies Astrophysical Theories

Posted by in category: cosmology

Chinese astronomers have uncovered a low-mass black hole that challenges long-held astrophysical theories. This black hole, part of a binary system known as G3425, has a mass of about 3.6 solar masses, placing it in the elusive mass-gap where black holes were previously thought to be absent. The discovery was made using a combination of radial velo…

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