How the Universe Differs from Its Mirror Image
(quantamagazine.org)
When Alice went through the looking glass, she found a bizarre world indeed.
When Alice went through the looking glass, she found a bizarre world indeed.
How the Universe Differs from Its Mirror Image
(quantamagazine.org)
When Alice went through the looking glass, she found a bizarre world indeed.
When Alice went through the looking glass, she found a bizarre world indeed.
Why it is (nearly) impossible that we live in a simulation
(arxiv.org)
We assess how physically realistic the ''simulation hypothesis'' for this Universe is, based on physical constraints arising from the link between information and energy, and on known astrophysical constraints.
We assess how physically realistic the ''simulation hypothesis'' for this Universe is, based on physical constraints arising from the link between information and energy, and on known astrophysical constraints.
Latest dark energy study suggests the Universe is even weirder than we imagined
(scientificamerican.com)
In 2024 a shockwave rippled through the astronomical world, shaking it to the core. The disturbance didn’t come from some astral disaster at the solar system’s doorstep, however. Rather it arrived via the careful analysis of many far-distant galaxies, which revealed new details of the universe’s evolution across eons of cosmic history.
In 2024 a shockwave rippled through the astronomical world, shaking it to the core. The disturbance didn’t come from some astral disaster at the solar system’s doorstep, however. Rather it arrived via the careful analysis of many far-distant galaxies, which revealed new details of the universe’s evolution across eons of cosmic history.
A competing theory to 'dark energy' suggests universe has different time zones
(cbc.ca)
There's a cosmic controversy brewing in the universe. It centres around the mysterious force known as "dark energy."
There's a cosmic controversy brewing in the universe. It centres around the mysterious force known as "dark energy."
Irishman's universal evolution theory challenges accepted cosmology
(irishtimes.com)
It all started with a big bang has been the commonly accepted origin story of our universe for decades. But what if it’s wrong?
It all started with a big bang has been the commonly accepted origin story of our universe for decades. But what if it’s wrong?
Half of the universe's hydrogen gas, long unaccounted for, has been found
(news.berkeley.edu)
Astronomers tallying up all the normal matter — stars, galaxies and gas — in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago.
Astronomers tallying up all the normal matter — stars, galaxies and gas — in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago.
Half of the universe's hydrogen gas, long unaccounted for, has been found
(phys.org)
Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago.
Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago.
Major Problem in Physics Could Be Fixed If the Whole Universe Was Spinning
(sciencealert.com)
Earth rotates, the Sun rotates, the Milky Way rotates – and a new model suggests the entire Universe could be rotating. If confirmed, it could ease a significant tension in cosmology.
Earth rotates, the Sun rotates, the Milky Way rotates – and a new model suggests the entire Universe could be rotating. If confirmed, it could ease a significant tension in cosmology.
Researcher proposes model replacing dark energy/matter to explain universe
(phys.org)
Dr. Richard Lieu, a physics professor at The University of Alabama in Huntsville (UAH), a part of The University of Alabama System, has published a paper in the journal Classical and Quantum Gravity that proposes a universe built on steps of multiple singularities rather than the Big Bang alone to account for the expansion of the cosmos.
Dr. Richard Lieu, a physics professor at The University of Alabama in Huntsville (UAH), a part of The University of Alabama System, has published a paper in the journal Classical and Quantum Gravity that proposes a universe built on steps of multiple singularities rather than the Big Bang alone to account for the expansion of the cosmos.
The Entire Universe Could Exist Inside a Black Hole – Here's Why
(sciencealert.com)
When you peer out into the depths of the cosmos, a mystery lies there, waiting.
When you peer out into the depths of the cosmos, a mystery lies there, waiting.
Why Everything in the Universe Turns More Complex
(quantamagazine.org)
A new suggestion that complexity increases over time, not just in living organisms but in the nonliving world, promises to rewrite notions of time and evolution.
A new suggestion that complexity increases over time, not just in living organisms but in the nonliving world, promises to rewrite notions of time and evolution.
String Theorists Say Black Holes Are Multidimensional String 'Supermazes'
(scientificamerican.com)
Black holes, the densest objects in the universe, eat up anything that comes too close, even light. Is there anything left inside these behemoths that could reveal what they devoured in the first place? String theory, an attempt to merge gravity with quantum physics, says yes. A new study suggests that within black holes lie tangled pathways of strings called supermazes, which hold that information in multiple dimensions.
Black holes, the densest objects in the universe, eat up anything that comes too close, even light. Is there anything left inside these behemoths that could reveal what they devoured in the first place? String theory, an attempt to merge gravity with quantum physics, says yes. A new study suggests that within black holes lie tangled pathways of strings called supermazes, which hold that information in multiple dimensions.
'More than a hint' that dark energy isn't what astronomers thought
(nytimes.com)
An international team of astronomers on Wednesday unveiled the most compelling evidence to date that dark energy — a mysterious phenomenon pushing our universe to expand ever faster — is not a constant force of nature but one that ebbs and flows through cosmic time.
An international team of astronomers on Wednesday unveiled the most compelling evidence to date that dark energy — a mysterious phenomenon pushing our universe to expand ever faster — is not a constant force of nature but one that ebbs and flows through cosmic time.
Dark Energy experiment challenges Einstein's theory of Universe
(bbc.com)
The mysterious force called Dark Energy, which drives the expansion of the Universe, might be changing in a way that challenges our current understanding of time and space, scientists have found.
The mysterious force called Dark Energy, which drives the expansion of the Universe, might be changing in a way that challenges our current understanding of time and space, scientists have found.
Is Dark Energy Getting Weaker? New Evidence Strengthens the Case
(quantamagazine.org)
Last spring, a team of nearly 1,000 cosmologists announced that dark energy — the enigmatic agent propelling the universe to swell in size at an ever-increasing rate — might be slackening.
Last spring, a team of nearly 1,000 cosmologists announced that dark energy — the enigmatic agent propelling the universe to swell in size at an ever-increasing rate — might be slackening.
New high-definition images released of the baby universe
(princeton.edu)
New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe’s infancy — the earliest cosmic time yet accessible to humans.
New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe’s infancy — the earliest cosmic time yet accessible to humans.
New maps of the chaotic space-time inside black holes
(quantamagazine.org)
At the beginning of time and the center of every black hole lies a point of infinite density called a singularity.
At the beginning of time and the center of every black hole lies a point of infinite density called a singularity.
Astronomers Amazed by Perfect 'Einstein Ring' Gleaming in Space
(sciencealert.com)
Around a galaxy just 590 million light-years away, astronomers have discovered a stunning example of one of the rarest phenomena in our skies: a perfect ring of light.
Around a galaxy just 590 million light-years away, astronomers have discovered a stunning example of one of the rarest phenomena in our skies: a perfect ring of light.
Cosmologists Try a New Way to Measure the Shape of the Universe
(quantamagazine.org)
Is the universe flat and infinite, or something more complex? We can’t say for sure, but a new search strategy is mapping out the subtle signals that could reveal if the universe has a shape.
Is the universe flat and infinite, or something more complex? We can’t say for sure, but a new search strategy is mapping out the subtle signals that could reveal if the universe has a shape.
Physicists who want to ditch dark energy
(nautil.us)
The idea that mysterious stuff speeds up the acceleration of the universe could be a big mistake
The idea that mysterious stuff speeds up the acceleration of the universe could be a big mistake
Dark Energy May Not Exist: Something Stranger Might Explain the Universe
(sciencealert.com)
There might not be a mysterious 'dark' force accelerating the expansion of the Universe after all. The truth could be much stranger – bubbles of space where time passes at drastically different rates.
There might not be a mysterious 'dark' force accelerating the expansion of the Universe after all. The truth could be much stranger – bubbles of space where time passes at drastically different rates.
James Webb's Big Year for Cosmology – Universe Today
(universetoday.com)
The James Webb Space Telescope was designed and built to study the early universe, and hopefully revolutionary our understanding of cosmology. Two years after its launch, it’s doing just that.
The James Webb Space Telescope was designed and built to study the early universe, and hopefully revolutionary our understanding of cosmology. Two years after its launch, it’s doing just that.
Supernovae Evidence for Foundational Change to Cosmological Models
(arxiv.org)
We present a new, cosmologically model-independent, statistical analysis of the Pantheon+ type Ia supernovae spectroscopic dataset, improving a standard methodology adopted by Lane et al.
We present a new, cosmologically model-independent, statistical analysis of the Pantheon+ type Ia supernovae spectroscopic dataset, improving a standard methodology adopted by Lane et al.
The Sean Carrolls Explain the Universe
(nautil.us)
Why are we here? Is there life on other planets? The renowned scientists who share a name share their answers to life’s big questions.
Why are we here? Is there life on other planets? The renowned scientists who share a name share their answers to life’s big questions.
Tiny Black Holes Could Have Left Tunnels Inside Earth's Rocks
(gizmodo.com)
A pair of imaginative cosmologists have great news for everyone: If a primordial black hole tunnels through your body, you probably won’t die.
A pair of imaginative cosmologists have great news for everyone: If a primordial black hole tunnels through your body, you probably won’t die.
Boltzmann brain
(wikipedia.org)
The Boltzmann brain thought experiment suggests that it might be more likely for a brain to spontaneously form in space, complete with a memory of having existed in our universe, rather than for the entire universe to come about in the manner cosmologists think it actually did.
The Boltzmann brain thought experiment suggests that it might be more likely for a brain to spontaneously form in space, complete with a memory of having existed in our universe, rather than for the entire universe to come about in the manner cosmologists think it actually did.