Cosmology
- All
- News
- Videos
-
How Hot Was the Universe 7 Billion Years Ago? Scientists Now Have an Answer
Japanese astronomers using ALMA data have found the universe was about twice as hot 7 billion years ago, with a temperature of 5.13 K compared to today’s 2.7 K. The finding aligns perfectly with Big Bang predictions that the Universe cools as it expands, providing the most precise mid-epoch measurement yet and reinforcing confidence in standard c...
-
Dark Matter May Behave Like Ordinary Matter Under Gravity, New Study Finds
A new study shows dark matter falls into cosmic gravity wells much like ordinary matter, narrowing one of astronomy’s biggest mysteries. Researchers say any unknown force acting on dark matter must be very weak, though future missions could detect smaller effects. The findings bring scientists closer to understanding how the universe’s unseen m...
-
Keio University Team Measures Ancient Cosmic Temperature, Confirming Big Bang Prediction
Using ALMA, Keio University scientists measured a 5.13 K cosmic background temperature from 7 billion years ago—matching Big Bang predictions of universal cooling. This precise reading, based on quasar absorption data, is the most accurate at that epoch and offers strong confirmation of how the Universe’s temperature decreases over time.
-
James Webb Telescope Uncovers the Turbulent Birth of the First Galaxies
Using JWST data, astronomers analyzed more than 250 galaxies from the universe’s first 1.5 billion years and found most were chaotic, with gas swirling in all directions. Only a few showed early signs of ordered rotation. The findings reveal how intense star formation and gravitational turbulence gave way to stability, transforming the early univ...
-
Ursa Major III May Be a Star Cluster, Not a Dark-Matter Dwarf Galaxy
Astronomers have long thought Ursa Major III, also called UNIONS 1, was a dark-matter-packed dwarf galaxy. But new simulations suggest it may instead be a compact star cluster bound by black holes and neutron stars. Located 30,000 light-years away, Ursa Major III contains just ~60 visible stars yet shows puzzlingly high stellar velocities. The new ...
-
Padma Vibhushan Astrophysicist Jayant Narlikar Dies At 87
Jayant Vishnu Narlikar was widely known for his pioneering contributions to cosmology, his efforts to popularise science, and for setting up premier research institutions in the country.
-
Russian Researchers Discover 11 New Active Galactic Nuclei In Spektr-RG X-ray Survey
In a significant step for extragalactic astronomy, researchers from the Russian Academy of Sciences have identified 11 new active galactic nuclei (AGNs) through the ART-XC telescope aboard the Spektr-RG space observatory. These AGNs, classified as Seyfert galaxies, span redshifts from 0.028 to 0.258 and display X-ray luminosities typical for the pr...
-
New Study Finds Hercules-Corona Borealis Great Wall Bigger and Nearer Than Thought
GRBs uncover a more massive and closer Hercules–Corona Borealis Great Wall, reshaping cosmic scale theories.Astronomers have found that the Hercules–Corona Borealis Great Wall—the largest known structure in the universe—is even larger and closer than previously thought. Spanning 10 billion light-years, this immense cluster of galaxies was t...
-
Dark Energy May Not Be Constant - How This Discovery Can Change Science
The great Russian physicist and Nobel laureate Lev Landau once remarked that "cosmologists are often in error, but never in doubt". In studying the history of the universe itself, there is always a chance that we have got it all wrong.
-
Did Black Hole Radiation Shape the Universe?
A study suggests that Hawking radiation, first proposed by Stephen Hawking, may have influenced the universe’s structure. According to reports, primordial black holes that existed in the early universe could have evaporated through Hawking radiation, impacting matter distribution. The research explores how these black holes might have shaped gala...
-
New Research Suggests Dark Energy Is Evolving, Challenging Cosmology Models
New research from the DESI project suggests that dark energy, once thought to be a constant force, may actually be changing over time. This challenges long-held cosmological models that assume a stable influence of dark energy on the universe’s expansion. By mapping 15 million galaxies, DESI’s data raises new questions about cosmic evolution. S...
-
ESA’s Euclid Telescope Releases First Data, Mapping 26 Million Galaxies
ESA’s Euclid telescope has released its first dataset, mapping 26 million galaxies within a week. The observations include deep-field images, a survey of 380,000 galaxies, and 500 new gravitational lens candidates. Scientists will continue tracking cosmic evolution over six years. The dataset, currently 35 terabytes, is expected to grow to 2 peta...
-
Atacama Telescope Reveals Most Detailed Cosmic Microwave Background Yet
New images from the decommissioned Atacama Cosmology Telescope offer the most detailed view of the cosmic microwave background. The data reveals early cosmic structures, tracks primordial gas movement, and refines estimates of the universe’s total mass. While supporting existing models, it does not resolve the Hubble tension. Researchers are now ...
-
Frontier Supercomputer Simulates Universe with Unmatched Complexity
The Frontier supercomputer at Oak Ridge National Laboratory has conducted the most detailed universe simulation to date. Using the Hardware/Hybrid Accelerated Cosmology Code (HACC) under the U.S. Department of Energy’s Exascale Computing Project, the model incorporates dark matter, gas, and plasma interactions. With speeds reaching 1.4 exaFLOPS, ...
-
Quantum Research Reveals Time May Not Always Move Forward
A new study on quantum systems suggests time might not always move forward. Researchers found that time-reversal symmetry persists in open quantum systems, challenging the traditional notion of a single directional arrow of time. The mathematical framework behind these interactions indicates that fundamental equations do not impose a distinction be...
-
How Hot Was the Universe 7 Billion Years Ago? Scientists Now Have an Answer
Japanese astronomers using ALMA data have found the universe was about twice as hot 7 billion years ago, with a temperature of 5.13 K compared to today’s 2.7 K. The finding aligns perfectly with Big Bang predictions that the Universe cools as it expands, providing the most precise mid-epoch measurement yet and reinforcing confidence in standard c...
-
Dark Matter May Behave Like Ordinary Matter Under Gravity, New Study Finds
A new study shows dark matter falls into cosmic gravity wells much like ordinary matter, narrowing one of astronomy’s biggest mysteries. Researchers say any unknown force acting on dark matter must be very weak, though future missions could detect smaller effects. The findings bring scientists closer to understanding how the universe’s unseen m...
-
Keio University Team Measures Ancient Cosmic Temperature, Confirming Big Bang Prediction
Using ALMA, Keio University scientists measured a 5.13 K cosmic background temperature from 7 billion years ago—matching Big Bang predictions of universal cooling. This precise reading, based on quasar absorption data, is the most accurate at that epoch and offers strong confirmation of how the Universe’s temperature decreases over time.
-
James Webb Telescope Uncovers the Turbulent Birth of the First Galaxies
Using JWST data, astronomers analyzed more than 250 galaxies from the universe’s first 1.5 billion years and found most were chaotic, with gas swirling in all directions. Only a few showed early signs of ordered rotation. The findings reveal how intense star formation and gravitational turbulence gave way to stability, transforming the early univ...
-
Ursa Major III May Be a Star Cluster, Not a Dark-Matter Dwarf Galaxy
Astronomers have long thought Ursa Major III, also called UNIONS 1, was a dark-matter-packed dwarf galaxy. But new simulations suggest it may instead be a compact star cluster bound by black holes and neutron stars. Located 30,000 light-years away, Ursa Major III contains just ~60 visible stars yet shows puzzlingly high stellar velocities. The new ...
-
Padma Vibhushan Astrophysicist Jayant Narlikar Dies At 87
Jayant Vishnu Narlikar was widely known for his pioneering contributions to cosmology, his efforts to popularise science, and for setting up premier research institutions in the country.
-
Russian Researchers Discover 11 New Active Galactic Nuclei In Spektr-RG X-ray Survey
In a significant step for extragalactic astronomy, researchers from the Russian Academy of Sciences have identified 11 new active galactic nuclei (AGNs) through the ART-XC telescope aboard the Spektr-RG space observatory. These AGNs, classified as Seyfert galaxies, span redshifts from 0.028 to 0.258 and display X-ray luminosities typical for the pr...
-
New Study Finds Hercules-Corona Borealis Great Wall Bigger and Nearer Than Thought
GRBs uncover a more massive and closer Hercules–Corona Borealis Great Wall, reshaping cosmic scale theories.Astronomers have found that the Hercules–Corona Borealis Great Wall—the largest known structure in the universe—is even larger and closer than previously thought. Spanning 10 billion light-years, this immense cluster of galaxies was t...
-
Dark Energy May Not Be Constant - How This Discovery Can Change Science
The great Russian physicist and Nobel laureate Lev Landau once remarked that "cosmologists are often in error, but never in doubt". In studying the history of the universe itself, there is always a chance that we have got it all wrong.
-
Did Black Hole Radiation Shape the Universe?
A study suggests that Hawking radiation, first proposed by Stephen Hawking, may have influenced the universe’s structure. According to reports, primordial black holes that existed in the early universe could have evaporated through Hawking radiation, impacting matter distribution. The research explores how these black holes might have shaped gala...
-
New Research Suggests Dark Energy Is Evolving, Challenging Cosmology Models
New research from the DESI project suggests that dark energy, once thought to be a constant force, may actually be changing over time. This challenges long-held cosmological models that assume a stable influence of dark energy on the universe’s expansion. By mapping 15 million galaxies, DESI’s data raises new questions about cosmic evolution. S...
-
ESA’s Euclid Telescope Releases First Data, Mapping 26 Million Galaxies
ESA’s Euclid telescope has released its first dataset, mapping 26 million galaxies within a week. The observations include deep-field images, a survey of 380,000 galaxies, and 500 new gravitational lens candidates. Scientists will continue tracking cosmic evolution over six years. The dataset, currently 35 terabytes, is expected to grow to 2 peta...
-
Atacama Telescope Reveals Most Detailed Cosmic Microwave Background Yet
New images from the decommissioned Atacama Cosmology Telescope offer the most detailed view of the cosmic microwave background. The data reveals early cosmic structures, tracks primordial gas movement, and refines estimates of the universe’s total mass. While supporting existing models, it does not resolve the Hubble tension. Researchers are now ...
-
Frontier Supercomputer Simulates Universe with Unmatched Complexity
The Frontier supercomputer at Oak Ridge National Laboratory has conducted the most detailed universe simulation to date. Using the Hardware/Hybrid Accelerated Cosmology Code (HACC) under the U.S. Department of Energy’s Exascale Computing Project, the model incorporates dark matter, gas, and plasma interactions. With speeds reaching 1.4 exaFLOPS, ...
-
Quantum Research Reveals Time May Not Always Move Forward
A new study on quantum systems suggests time might not always move forward. Researchers found that time-reversal symmetry persists in open quantum systems, challenging the traditional notion of a single directional arrow of time. The mathematical framework behind these interactions indicates that fundamental equations do not impose a distinction be...
