A team of researchers at Johannes Gutenberg University Mainz found no evidence of 'stupendously large' primordial black holes containing significant amounts of dark matter. The cosmic microwave background measurements by the Planck satellite show distinct impacts from such black holes should have been visible even today.
Physicists have developed a new theory to predict how particles, such as heavy quarks, move through quark-gluon plasma, a state of matter thought to have existed in the universe's first fraction of a second. The theory, which builds on Einstein's 1905 work, could provide new insights into the microscopic structure of quark-gluon plasma.
Researchers found that early galaxies were already producing and dispersing heavy elements, such as oxygen and carbon, 500 million years after the Big Bang. This discovery challenges previous assumptions and provides insights into the early universe's chemical evolution.
Researchers developed a method to test cosmic uncertainty in the universe's oldest light, which could provide evidence for physics beyond the Standard Model. The team compared maps from different detectors to establish the calibration pattern, finding consistency with existing analysis.
A research team at the Duke Quantum Center has observed string-breaking dynamics related to particle-antiparticle formation on a quantum simulator. The experiment emulates a phenomenon where two connected fundamental building blocks of matter stretch apart, creating new particles when the connection snaps.
Researchers use helium signals to determine the universe's primordial helium abundance, confirming decades of scientific understanding. The study strengthens theories about the early universe and its elements, including carbon and nitrogen.
The discovery reveals a surprisingly mature black hole at just 850 million years old, with an accretion disk resembling a flat pancake. This challenges the understanding of how supermassive black holes can grow and mature in a short amount of cosmic time.
Researchers propose alternative to dark energy as cause of the accelerating expansion of the universe, based on instability in Einstein-Euler equations. The study suggests a more natural explanation for cosmic acceleration within the framework of Einstein's original theory.
A team at the University of Arizona discovered exceptionally fast and powerful galactic winds from quasars a billion years after the Big Bang. These winds could have caused galaxies to lose gas supplies, effectively shutting down star formation. The study suggests that quasars with extreme outflows were more common in the early univers...
Researchers tracked galaxy clusters to test gravity's strength, finding it weakens with distance as predicted by Newton and Einstein. The study confirms the existence of invisible dark matter, closing the door on alternative theories like Modified Newtonian Dynamics.
Researchers at the University of Waterloo have developed a new theory that suggests the universe's rapid early expansion could emerge naturally from a deeper, more complete theory of quantum gravity. This approach offers a unified picture that connects the earliest moments of the universe to modern cosmology.
A team of researchers has observed a massive galaxy cluster that challenges existing models of the universe's evolution. The cluster's unusual structure and high density of cold, neutral hydrogen gas suggest a different history than previously thought. This discovery raises questions about the fate of large structures in the universe.
The sPHENIX detector precisely measured particles from high-speed collisions, revealing properties of quark-gluon plasma. This achievement enables scientists to reconstruct the early universe's conditions.
Astronomers aim to unlock secrets of the 'Cosmic Dawn' by sending a miniature spacecraft to detect faint signals from hydrogen in early universe. The UK-led CosmoCube mission would observe from far side of Moon, creating a quiet spot to listen for an 'ancient whisper'.
The COSMOS-Web field maps nearly 800,000 galaxies spanning 98% of cosmic time, challenging existing notions of the infant universe. Researchers see roughly 10 times more galaxies than expected at incredible distances, sparking new questions about the early universe and its mysteries.
The Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe’s infancy. These new images show subtle variations in density and velocity of gases in the young universe, helping scientists answer longstanding questions about the universe’s origins.
Researchers observed a galaxy nearly 6.5 billion light-years away, revealing a large number of individual stars made visible through gravitational lensing. The discovery provides new insights into the universe's greatest mysteries, including dark matter and stellar populations.
The Roman Space Telescope has successfully integrated its telescope, instruments, and spacecraft components at NASA Goddard. The observatory will focus cosmic light and send it to its instruments, revealing billions of objects in space and time.
Researchers analyzed 21 distant quasars to find a connection between X-ray emission and wind speed, indicating rapid accretion of matter. This study challenges physics limits and provides insights for future X-ray missions.
Researchers led by Katherine Chworowsky found that early galaxies were not as massive as initially thought due to black holes' influence. The study suggests that these black holes consume gas, emitting heat and light that makes the galaxies appear brighter than they really are.
Researchers propose that simple forms of ultra-light scalar field matter could generate detectable gravitational wave backgrounds soon after the Big Bang. This discovery could shed light on dark matter and its role in the universe's mass, offering a new avenue for fundamental physics research.
Scientists will use the Simons Observatory to uncover secrets hidden in the cosmic tapestry, revealing mysteries of the universe with unparalleled precision. The observatory's completion marks a major milestone in understanding the cosmos.
Researchers propose using lensed gravitational waves from binary black holes to measure cosmic expansion. The method uses the delays between repeat appearances of these signals to encode the universe's expansion rate. This approach does not rely on knowing the exact locations or distances of binary black holes, making it a promising to...
A team of astronomers discovered 87 galaxies that could be the earliest known galaxies in the universe using data from NASA's James Webb Space Telescope. This finding suggests a revision to our understanding of galaxy formation, indicating that more galaxies may have formed earlier than previously thought.
A new technique has identified previously hidden protoclusters that could reveal new details about galaxy evolution. The ancestors of large galaxy clusters were found to be hiding in plain sight, with some protoclusters harboring unseen galaxies that evolved differently.
Astronomers identify GNz7q, a dusty compact object with properties of both galaxies and quasars, born 750 million years after Big Bang. The discovery provides new insights into the rapid growth of supermassive black holes in early universe.
Scientists propose an alternative model for the formation of nitrogen, oxygen, and water based on the Earth's atmosphere history. They suggest that the Earth's lower mantle can create heavier elements through nuclear transmutation under high temperatures and pressures.