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Archive for the ‘cosmology’ category: Page 92

Nov 4, 2022

Dead and alive at the same time: Black holes have quantum properties

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

Black holes have properties characteristic of quantum particles, a new study reveals, suggesting that the puzzling cosmic objects can be at the same time small and big, heavy and light, or dead and alive, just like the legendary Schrödinger’s cat.

The new study, based on computer modeling, aimed to find the elusive connection between the mind-boggling time-warping physics of supermassive objects such as black holes and the principles guiding the behavior of the tiniest subatomic particles.

Nov 2, 2022

Scientists may have solved a massive galaxy mystery

Posted by in category: cosmology

New observations could explain why star formation declines over time.


And with the help of citizen scientists, a team of astronomers recently discovered a unique black hole in a galaxy roughly one billion light-years away that’s hurling a relativistic jet at another galaxy.

The research was conducted by a team led by Ananda Hota, a researcher with the UM-DAE Centre for Excellence in Basic Sciences. The paper that describes their findings was published on October 12th in the Monthly Notices of the Royal Astronomical Society Letters.

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Nov 2, 2022

Civilizations at the End of Time: Iron Stars

Posted by in categories: computing, cosmology, neuroscience

Use my link http://www.audible.com/isaac and get a free audio book with a 30 day trial!

In the previous episode we saw how civilizations might not simply survive after all the stars in the Universe had died, but might indeed thrive far better during the Black Hole Era of the Universe. Today, we will go beyond even the Dark Era to examine the concepts or Iron Star Civilizations, Boltzmann Brains, Reversible Computing, and even reversing Entropy itself.

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Nov 2, 2022

The cosmologist who claims to have evidence for the multiverse

Posted by in categories: cosmology, mathematics, quantum physics

HOW did our universe begin? This is among the most profound questions of all, and you would be forgiven for thinking it is impossible to answer. But Laura Mersini-Houghton says she has cracked it. A cosmologist at the University of North Carolina at Chapel Hill, she was born and raised under communist dictatorship in Albania, where her father was considered ideologically opposed to the regime and exiled. She later won a Fulbright scholarship to study in the US, forging a career in cosmology in which she has tackled the origins of the universe – and made an extraordinary proposal.

Mersini-Houghton’s big idea is that the universe in its earliest moments can be understood as a quantum wave function – a mathematical description of a haze of possibilities – that gave rise to many diverse universes as well as our own. She has also made predictions about how other universes would leave an imprint upon our own. Those ideas have been controversial, with some physicists arguing that her predictions are invalid. But Mersini-Houghton argues that they have been confirmed by observations of the radiation left over from the big bang, known as the cosmic microwave background.

Nov 1, 2022

Dwarf Galaxies Size Up Dark Matter Models

Posted by in categories: cosmology, particle physics

A proposed study of dwarf galaxies could give insight into whether dark matter particles interact with each other.

Nov 1, 2022

New cosmic observations can’t be explained by classical theory of gravity

Posted by in categories: cosmology, physics

The observations could not be explained by Newton’s law of universal gravitation. An alternative theory of gravity might provide the answer. Astrophysicists observed mysterious behavior in star clusters that could lead to a rewrite of fundamental principles of the theory of gravity and even disprove the existence of dark matter, a press release explains.

The new findings challenge existing preconceptions based on widely-accepted principles from Newton’s law of universal gravitation, which explain the large-scale structure and movements of the universe.

Nov 1, 2022

Supernova Explosions Reveal Precise Details of Dark Energy and Dark Matter

Posted by in categories: cosmology, evolution, physics

An analysis of more than two decades’ worth of supernova explosions convincingly boosts modern cosmological theories and reinvigorates efforts to answer fundamental questions.

A powerful new analysis has been performed by astrophysicists that places the most precise limits ever on the composition and evolution of the universe. With this analysis, dubbed Pantheon+, cosmologists find themselves at a crossroads.

Pantheon+ convincingly finds that the cosmos is made up of about two-thirds dark energy and one-third matter — predominantly in the form of dark matter — and is expanding at an accelerating pace over the last several billion years. However, Pantheon+ also cements a major disagreement over the pace of that expansion that has yet to be solved.

Oct 31, 2022

Curious Kids: What is exotic matter, and could we use it to make wormholes?

Posted by in category: cosmology

What is exotic matter, and could we use it to make wormholes? – Julia, aged 14, London.

Oct 30, 2022

Mars Life — Where to Find It — IF…

Posted by in categories: cosmology, space travel

Where are we likely to find life first and the most on Mars? And why I think that is both likely and not a threat to us and us not to it, Watch and see.

Worm-hole generators by the pound mass: https://greengregs.com/

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Oct 30, 2022

Astronomers devised an early warning system for supernova explosions

Posted by in categories: cosmology, physics

Experts from the Astrophysics Research Institute at LJMU, with help from colleagues from the University of Montpellier, have conceived of an ‘early warning’ system to alert to when a massive star is about to end its life.

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