Cosmology
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James Webb Space Telescope Could Help Reveal Dark Matter in a Way Scientists Did Not Anticipate
New research suggests the James Webb Space Telescope could help scientists understand dark matter by studying oddly shaped early galaxies. These elongated galaxies may form due to dark matter’s gravitational behaviour, offering indirect clues about whether ultralight or warm dark matter particles shaped the early universe.
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Researchers Found Mysterious Objects That Could Be "Dark Stars"
In smaller dark stars, when their dark matter runs out, normal nuclear fusion can begin, and they gradually become normal stars.
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New Telescope Data Deepens the Mystery of How Fast the Universe Is Expanding
The Atacama Cosmology Telescope’s final polarisation maps reinforce the long-standing Hubble tension, confirming a slower early-universe expansion rate similar to Planck’s findings. By ruling out several proposed fixes, the new data intensifies the mystery and suggests current cosmological models may be missing key physics.
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New Gravitational-Wave Signal May Reveal Primordial Black Holes Born After the Big Bang
Scientists have spotted an unusual gravitational-wave signal that may reveal the universe’s first primordial black holes—tiny relics dating back to the Big Bang. Recorded by LIGO–Virgo–KAGRA in November 2025, the event involves an object far lighter than any known stellar remnant. If verified, it could reshape theories of black holes and da...
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New Study Suggests Universe's Expansion May Be Slowing, Not Accelerating
Professor Carlos Frenk of Durham University, who wasn't involved in the study, called the findings noteworthy.
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Is the Universe Slowing Down? Astronomers Detect Signs of Fading Dark Energy
Astronomers from Yonsei University and DESI data analyses indicate dark energy, long believed constant, may be weakening. Corrected supernova results hint that cosmic acceleration is slowing—a possible “cosmic slowdown.” If true, this could help resolve the Hubble tension and redefine how the universe’s expansion and ultimate fate are under...
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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...
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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...
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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.
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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...
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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 ...
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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.
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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...
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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...
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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.
-
James Webb Space Telescope Could Help Reveal Dark Matter in a Way Scientists Did Not Anticipate
New research suggests the James Webb Space Telescope could help scientists understand dark matter by studying oddly shaped early galaxies. These elongated galaxies may form due to dark matter’s gravitational behaviour, offering indirect clues about whether ultralight or warm dark matter particles shaped the early universe.
-
Researchers Found Mysterious Objects That Could Be "Dark Stars"
In smaller dark stars, when their dark matter runs out, normal nuclear fusion can begin, and they gradually become normal stars.
-
New Telescope Data Deepens the Mystery of How Fast the Universe Is Expanding
The Atacama Cosmology Telescope’s final polarisation maps reinforce the long-standing Hubble tension, confirming a slower early-universe expansion rate similar to Planck’s findings. By ruling out several proposed fixes, the new data intensifies the mystery and suggests current cosmological models may be missing key physics.
-
New Gravitational-Wave Signal May Reveal Primordial Black Holes Born After the Big Bang
Scientists have spotted an unusual gravitational-wave signal that may reveal the universe’s first primordial black holes—tiny relics dating back to the Big Bang. Recorded by LIGO–Virgo–KAGRA in November 2025, the event involves an object far lighter than any known stellar remnant. If verified, it could reshape theories of black holes and da...
-
New Study Suggests Universe's Expansion May Be Slowing, Not Accelerating
Professor Carlos Frenk of Durham University, who wasn't involved in the study, called the findings noteworthy.
-
Is the Universe Slowing Down? Astronomers Detect Signs of Fading Dark Energy
Astronomers from Yonsei University and DESI data analyses indicate dark energy, long believed constant, may be weakening. Corrected supernova results hint that cosmic acceleration is slowing—a possible “cosmic slowdown.” If true, this could help resolve the Hubble tension and redefine how the universe’s expansion and ultimate fate are under...
-
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.
