Physicist suggests speed of light might be slower than thought
(Phys.org) —Physicist James Franson of the University of Maryland, Baltimore County has captured the attention of the physics community by posting an article to the peer-reviewed New Journal of Physics...
View ArticleArtificial spacetime experiment could show tantalizing effects of...
(Phys.org) —Although the curves and ripples of spacetime are suspected to be full of intriguing secrets about the history of the universe, they are also extremely difficult to study. For this reason,...
View ArticleMassive neutrinos and new standard cosmological model: No concordance yet
Neutrinos, also known as 'ghost particles' because they barely interact with other particles or their surroundings, are massless particles according to the standard model of particle physics. However,...
View ArticleCosmologists probe beyond the Big Bang
A long tradition of cosmology research in Cornell's College of Arts and Sciences has given birth to a vigorous effort by a new generation of cosmologists to understand the Cosmic Microwave Background...
View ArticleInteractive dark matter could explain Milky Way's missing satellite galaxies
Scientists believe they have found a way to explain why there are not as many galaxies orbiting the Milky Way as expected.
View ArticleThe dark side of cosmology
It's a beautiful theory: the standard model of cosmology describes the universe using just six parameters. But it is also strange. The model predicts that dark matter and dark energy – two mysterious...
View ArticleBest of Last Week—Transferring quantum states, wireless energy breakthrough...
It has once again been an interesting week for physics—a team working in China demonstrated a quantum communication scheme that transferred quantum states without transmitting physical particles. They...
View ArticleExtent of Moon's giant volcanic eruption is revealed
Scientists have produced a new map of the Moon's most unusual volcano showing that its explosive eruption spread debris over an area much greater than previously thought.
View ArticleUniverse may be on the brink of collapse (on the cosmological timescale)
(Phys.org)—Physicists have proposed a mechanism for "cosmological collapse" that predicts that the universe will soon stop expanding and collapse in on itself, obliterating all matter as we know it....
View ArticleDo we need a new theory of gravity?
In the late 1990s physicists discovered, to their consternation, that the expansion of the universe is not slowing but accelerating. Nothing in the 'standard model of cosmology' could account for this,...
View ArticleDeath by gamma-ray bursts may place first lower bound on the cosmological...
(Phys.org)—Sometimes when a star collapses into a supernova, it releases an intense, narrow beam of gamma rays. Gamma-ray bursts often last just a few seconds, but during that time they can release as...
View ArticleProbing dark energy with clusters: "Russian doll" galaxy clusters reveal...
These four galaxy clusters were part of a large survey of over 300 clusters used to investigate dark energy, the mysterious energy that is currently driving the accelerating expansion of the Universe,...
View ArticleWhy is space three-dimensional?
(Phys.org)—The question of why space is three-dimensional (3D) and not some other number of dimensions has puzzled philosophers and scientists since ancient Greece. Space-time overall is...
View ArticleSeeds of black holes could be revealed by gravitational waves detected in space
Scientists led by Durham University's Institute for Computational Cosmology ran the huge cosmological simulations that can be used to predict the rate at which gravitational waves caused by collisions...
View ArticlePhysicists measure the loss of dark matter since the birth of the universe
Russian scientists have discovered that the proportion of unstable particles in the composition of dark matter in the days immediately following the Big Bang was no more than 2 percent to 5 percent....
View ArticleViolations of energy conservation in the early universe may explain dark energy
(Phys.org)—Physicists have proposed that violations of energy conservation in the early universe, as predicted by certain modified theories of quantum mechanics and quantum gravity, may explain the...
View ArticleQuest to settle riddle over Einstein's theory may soon be over
Astronomy experiments could soon test an idea developed by Albert Einstein almost exactly a century ago, scientists say.
View ArticleRumors of inflationary theory's demise premature, researchers say
From the earliest human civilizations, people have looked to the heavens and pondered the origins of the stars and constellations above. Once, those stories involved gods and magical beings. Now,...
View ArticleStandard model of the universe withstands most precise test by Dark Energy...
Astrophysicists have a fairly accurate understanding of how the universe ages: That's the conclusion of new results from the Dark Energy Survey (DES), a large international science collaboration,...
View ArticleNew supernova analysis reframes dark energy debate
The accelerating expansion of the Universe may not be real, but could just be an apparent effect, according to new research published in the journal Monthly Notices of the Royal Astronomical Society....
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