Primordial galaxies as a research area focuses on the formation, physical conditions, and early evolution of the first galactic systems emerging in the high-redshift Universe (z ≳ 6–15). It investigates how gas cooling, metal-free or metal-poor star formation, feedback from massive Population III and early Population II stars, and nascent black holes drove the buildup of stellar mass, chemical enrichment, and reionization of the intergalactic medium. This field integrates observations from deep near-infrared surveys and spectroscopy with cosmological hydrodynamical simulations and semi-analytic models to constrain dark matter halo assembly, baryonic physics, and the linkage between early galaxies and large-scale structure.
Astronomers at Texas A&M University have discovered a rare, tightly packed collision of galaxies in the early universe, suggesting that galaxies were interacting and shaping their surroundings far earlier than scientists ...
Astronomy
Jan 30, 2026
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The NASA/ESA/CSA James Webb Space Telescope has topped itself once again, delivering on its promise to push the boundaries of the observable universe closer to cosmic dawn with the confirmation of a bright galaxy that existed ...
Astronomy
Jan 28, 2026
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An international research team led by scientists at Waseda University and Tohoku University has discovered an extraordinary quasar in the early universe that hosts one of the fastest-growing supermassive black holes known ...
Astronomy
Jan 22, 2026
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Astronomers have discovered a vast, dense cluster of massive galaxies just 1 billion years after the Big Bang, each forming stars at an intense rate from collapsing clouds of dust. Reported in Astronomy & Astrophysics by ...
Since the James Webb Space Telescope (JWST) went into operation, red dots in its images have puzzled researchers around the world. Now, researchers from the University of Copenhagen have explained these enigmatic findings, ...
Astronomy
Jan 14, 2026
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A recent study provides answers to three seemingly disparate yet pressing cosmic dawn puzzles. Specifically, the authors show how dark stars could help explain the unexpected discovery of "blue monster" galaxies, the numerous ...
Astronomy
Jan 8, 2026
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Using NASA's James Webb Space Telescope, astronomers have spotted two rare kinds of dust in the dwarf galaxy Sextans A, one of the most chemically primitive galaxies near the Milky Way.
Astronomy
Jan 6, 2026
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A team using the NASA/ESA Hubble Space Telescope has uncovered a new type of astronomical object—a starless, gas-rich, dark-matter cloud that is considered a "relic" or remnant of early galaxy formation. Nicknamed "Cloud-9," ...
Astronomy
Jan 5, 2026
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An international team of astronomers has uncovered multiple evolutionary paths for the universe's most massive galaxies. Observations of ultramassive galaxies, each containing more than 100 billion stars, show that less than ...
Astronomy
Jan 5, 2026
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In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big Bang—a cosmic Jekyll and Hyde that looks like any other galaxy when viewed in visible and even ultraviolet ...
Astronomy
Dec 11, 2025
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