Researchers have developed a method to reconstruct the early Universe's state, removing gravitational effects from large-scale structure. The ATERUI II supercomputer was used to create simulated universes, revealing that the method can correct primordial density fluctuations and improve inflation constraints.
Researchers developed low-cost, mass-producible metamaterial tiles to absorb environmental emissions and improve telescope sensitivity. The tiles enabled unprecedented sensitivity in measuring the cosmic microwave background, transforming our understanding of the universe's beginning and evolution.
A giant 2D map of the universe, released by the Beijing-Arizona Sky Survey (BASS), will aid the upcoming DESI project's spectroscopic survey. The map covers half of the sky, spanning over 10 trillion pixels and containing about two billion objects.
The discovery uses a deep residual neural net trained on real data to uncover warped and stretched images of distant galaxies. The new lenses provide astronomers with targets to measure fundamental properties of the Universe, including the Hubble constant.
Astronomers have identified the most distant quasar known, powered by a supermassive black hole weighing over 1.6 billion times the mass of the Sun. The discovery provides insight into the formation of massive galaxies in the early universe and challenges theories of black hole growth.
The most distant quasar known has been discovered, powered by the earliest known supermassive black hole weighing over 1.6 billion times the mass of the Sun. This fully formed distant quasar is also the earliest yet discovered, providing insight into massive galaxy formation in the early Universe.
The Roman Space Telescope will enable new science in astrophysics by imaging an area 100 times larger than Hubble with the same crisp sharpness. It could reveal new insights into star formation during the universe's youth and galaxy clustering, as well as study the early universe and cosmic dawn.
Astronomers have estimated the universe's age to be nearly 14 billion years old using data from the Atacama Cosmology Telescope and the European Space Agency's Planck satellite. The findings match the predictions of the standard model of the universe, resolving a discrepancy that had sparked debate in the astrophysics community.
Researchers at Kavli IPMU propose a novel scenario for primordial black hole formation, suggesting they could account for all or part of dark matter. They also suggest that PBHs could be responsible for some gravitational wave signals and seed supermassive black holes found in the center of our Galaxy.
A team from University of Bonn observed a 50 million light year long gas filament, confirming the structure predicted by computer simulations. The findings suggest that more than half of matter in the universe is hidden in filaments.
Researchers confirm the distance of the most-distant galaxy GN-z11 to 13.4 billion light-years, improving understanding of star and galaxy formation in the early universe. The discovery also reveals an ultraviolet flash associated with a gamma-ray burst, providing insights into cosmic reionization.
Astronomers use a novel spectrograph to measure the redshift of GN-z11, a ancient galaxy located 13.4 billion light years away, marking it as the farthest detectable galaxy in the universe. The team's precise measurement improves the accuracy of the galaxy's distance by a factor of 100.
A team of researchers has developed a method to tease out primordial gravitational waves from gravitational-wave data. The new approach allows for the detection of faint signals that could reveal insights into the early universe's conditions and processes.
A new method to measure polarization angle developed, achieving precision twice that of previous work. A hint of parity symmetry violation found in the cosmic microwave background radiation with 99.2% confidence level.
A new simulation approach accurately depicts the role of elusive particles called neutrinos in the evolution of the universe. The results show that neutrinos suppress dark matter clustering and are correlated with massive galaxy clusters.
Researchers have developed a new instrument that can analyze the chemical signatures of distant quasars, providing insight into the origins of metals like iron. By studying these ancient galactic cores, scientists hope to refine their understanding of the early universe and its role in forming the elements necessary for life.
Researchers at the University of Texas at Dallas have developed a self-calibration method to remove contamination from gravitational lensing signals, allowing for more accurate measurements of key cosmological parameters. This breakthrough has significant implications for understanding dark energy and the structure of the universe.
Researchers reconstruct when most stars formed in the Universe, agreeing with telescope observations for the first time. They use a new algorithm to model energy and wavelengths of light coming from 7000 nearby galaxies.
A new project led by West Virginia University researcher Kevin Bandura aims to understand the nature of dark energy by mapping out the distribution of matter throughout the universe. The three-year project will use precise observations to study the expansion of the universe, which is currently accelerating due to dark energy.
A team led by UC Riverside scientists determines that matter makes up 31% of the total amount of matter and energy in the universe. The researchers used a novel method to measure the mass of galaxy clusters, finding a best combined value of 31.5±1.3%.
The universe's homogeneity is explained by Einstein's gravity theory, which shows that cosmological gravitational waves decay over time. This finding suggests that Einstein's theory can fully explain the universe's state without the need for inflation.
A recent study published in Nature has zoomed in on dark matter haloes of varying masses, revealing a surprising similarity in their internal structure. The research team used supercomputers to simulate the evolution of the universe and found that even small haloes have dense centers and spread-out outer regions.
Astronomers using ALMA have discovered the most distant Milky Way look-alike galaxy, SPT0418-47, which is surprisingly unchaotic and appears as a ring of light in the sky. The discovery challenges our understanding of how galaxies form and gives new insights into the past of the Universe.
A new study using loop quantum cosmology accounts for two major mysteries of the universe's largest scales. The research resolves two anomalies that have puzzled scientists for years, providing a closer look at the early universe and its primordial features.
A new study by a University of Oregon physicist estimates the age of the universe at 12.6 billion years using a refined distance-calculation technique. The approach recalibrates a distance-measuring tool known as the baryonic Tully-Fisher relation independently of Hubble's constant.
The discovery of Po?niua??ena, the second-most distant quasar, sheds light on the formation of massive black holes and galaxies in the young universe. The quasar's existence challenges current theories, requiring a new mechanism to explain its massive size formed so early in the universe's history.
Astronomers have discovered the second most distant quasar, Pōniuāʻena, containing a monster black hole twice the mass of other quasars at the same epoch. The discovery presents significant challenges to current theories on supermassive black hole formation and growth in the early universe.
Astronomers have discovered the second-most distant quasar, Pōniuā`ena, powered by a supermassive black hole 1.5 billion times more massive than our Sun. The discovery challenges current theories of how these massive black holes formed and grew in the young universe.
An ultra-sensitive sensor has been developed to detect the nuclear decay of heavy neutrinos, which could explain the cosmic asymmetry between matter and antimatter. The researchers used a new fluorescent molecule to capture the barium ion produced in the process, providing a clear signal.
Researchers have developed a method to detect the presence of weak gravitational wave events, revealing a lost 8 billion light years of universe evolution. This breakthrough will allow scientists to observe farther away in space-time and gain insights into the early universe's structure.
The XENON1T experiment has observed a surprising excess of 53 events over expected backgrounds, sparking theories on potential sources such as tritium, axions, or altered neutrino properties. The solar axion hypothesis holds the most significance at 3.5 sigma, while other explanations remain consistent with data.
A new study using international radio telescope data reveals galaxies are nearer than predicted, exacerbating a discrepancy in the Hubble Constant measurement. This finding bolsters the need to revise the standard cosmological model of the Universe.
A team of European researchers used Hubble Space Telescope to study the early Universe, finding no evidence of Population III stars. The discovery suggests that galaxies must have formed much earlier than previously thought, supporting the idea that low-mass galaxies are responsible for reionisation.
A new study has provided precise tests of dark energy and cosmic expansion by analyzing the distribution of galaxies in the Universe. The research uses a combination of cosmic voids and baryon acoustic oscillations, yielding more accurate results than previous methods.
Researchers analyzed over 200,000 spiral galaxies, finding a pattern of asymmetry in their spin directions that suggests the early universe may have been spinning. The study also reveals complex cosmological multipoles, which indicate a non-symmetric structure to the universe.
Astronomers used ALMA to discover a massive rotating disk galaxy, DLA0817g, which challenges traditional models of galaxy formation. The galaxy formed primarily through the steady accretion of cold gas, indicating alternative growth processes dominated over violent mergers.
Physicists led by Rene Bellwied aim to understand the role of 'dark' matter in the universe's evolution. The team will analyze data from international experiments STAR and ALICE to study the transition from quark-gluon plasma to existing particles.
A recent study used a 10-year galaxy survey to test one of cosmology's pillars and provided a new approach to understanding the universe's growth. The research team demonstrated that denser clumps grew faster, while less-dense clumps grew more slowly.
Research by University of Sheffield physicists indicates a difference in neutrino and antineutrino behavior, which could help explain the universe's matter-matter asymmetry. The T2K experiment strengthens previous observations and paves the way for future discoveries.
The T2K experiment has shown that neutrinos oscillate more often than antineutrinos, pointing to almost maximum asymmetry between their behaviors. This finding offers a promising explanation for the disappearance of antimatter in the universe and may be confirmed by future experiments.
Researchers at Lancaster University's T2K experiment have found that almost half of the possible parameter values governing matter-antimatter asymmetry in the Universe have been disfavoured. This discovery suggests a basic property of neutrinos, one of the fundamental particles making up the Universe.
A new study by the T2K Collaboration confirms that neutrinos and antineutrinos behave differently, which could explain why matter persists over antimatter in the universe. This result brings scientists closer to answering the fundamental question of why the universe is dominated by matter.
A Kanazawa University researcher proposes a novel cosmological model that extends the concept of black hole thermodynamics. The model satisfies the second law of thermodynamics on the horizon and suggests regions where cosmological models are favored from a thermodynamic viewpoint.
Researchers used a computer algorithm inspired by slime mould to create a three-dimensional map of the cosmic web structure in the local Universe. The analysis revealed that intergalactic gas is organised into filaments and detected at distances over 10 million light-years from galaxies.
Researchers have successfully mapped the cosmic web's filamentary structure using a slime mold-inspired algorithm, providing insights into dark matter's role in shaping the universe. The study revealed that denser regions of intergalactic gas are organized into filaments that stretch over 10 million light-years from galaxies.
A UNIGE researcher has solved a scientific controversy about the speed of the universe's expansion by proposing that it may not be homogeneous on a large scale. This approach eliminates a divergence between two independent calculation methods, which previously yielded conflicting values for the Hubble constant.
A new study suggests that life in the universe is likely to be common, but only under specific conditions. The research, led by Professor Tomonori Totani, found that complex RNA structures necessary for life to exist may have formed spontaneously in vast regions of space beyond our observable horizon.
Scientists at the University of Sussex have measured a neutron property more precisely than ever before, finding it smaller than predicted by some theories about matter in the universe. This discovery helps rule out these theories and pushes the limit on measuring the electric dipole moment of the neutron.
An international team of astronomers has discovered an unusual monster galaxy called XMM-2599, which formed most of its stars in a huge frenzy when the universe was less than 1 billion years old. The galaxy stopped forming stars and became inactive by the time the universe was only 1.8 billion years old.
A team of researchers proposes that gravitational waves could be evidence of a phase transition in the early universe, allowing for neutrino particles to reshuffle matter and anti-matter. This imbalance is thought to have prevented a complete annihilation of matter and anti-matter.
Astronomers have detected significant amounts of oxygen in the ancient star J0815+4729, which is one of the oldest and most elementally depleted stars known. This finding provides valuable insights into how oxygen and other essential elements were produced in the early universe.
Astronomers have identified overlapping bubbles of hydrogen gas ionized by the stars in early galaxies, providing direct evidence for the reionization of the universe. The earliest detected stars formed around 680 million years after the Big Bang and began to light up the cosmic dark ages.
Astronomers have spotted a distant galaxy group, EGS77, driving the cosmic makeover of reionization. The trio of galaxies is seen in near-infrared light due to its distance and age, which dates back to 680 million years old.
The IKBFU scientists proposed a new theory suggesting that the 'Dark Energy' is not a mysterious entity but rather a manifestation of the universe's boundaries. They draw an analogy with the Earth, where we experience attraction due to gravity but also have no physical boundaries.
Researchers discovered gigantic clouds of gaseous carbon spanning over 30,000 light-years around young galaxies using ALMA. The findings indicate that carbon atoms produced inside stars in the early Universe have spread beyond galaxies, challenging current understanding of cosmic evolution.
Researchers analyzed data from the Murchison Widefield Array radio telescope to set a new limit for the strength of neutral hydrogen's ultra-faint signature. The analysis may reveal critical information about the first stars and galaxies in the universe.
Physicists use two types of measurements to calculate the universe's expansion rate, but their results don't coincide. The Hubble constant value differs by 7% between late and early Universe measurements.
A team of Clemson University astrophysicists has devised a new measurement of the Hubble Constant, which describes the rate of expansion of the universe. Their analysis of data from orbiting and ground-based telescopes yields a measurement of approximately 67.5 kilometers per second per megaparsec.
Astrophysicists simulated giant radio galaxies to explain their formation. They found that these objects remain enormous even at great distances, challenging classical physics.
Researchers simulated the critical reheating period at the end of cosmic inflation, which may have bridged the gap between inflation and the Big Bang. The simulations suggest that quantum effects could have redistributed energy quickly, producing conditions necessary for the start of the Big Bang.