Physicists Challenge Long-Held Assumptions about Nature of Dark Matter
Dark matter may not have been ‘cold’ in the earliest moments after the Big Bang, as long believed;…
Early Universe’s ‘Little Red Dots’ Are Young Supermassive Black Holes, Astrophysicists Say
Astrophysicists at the University of Copenhagen show that the enigmatic ‘little red dots’ — red sources scattered across…
Little red dots as young supermassive black holes in dense ionized cocoons
Greene, J. E. et al. UNCOVER spectroscopy confirms the surprising ubiquity of active galactic nuclei in red sources…
Barred Spiral Galaxy Spotted Just Two Billion Years after Big Bang
Using the high resolution images from the NIRCam (Near-InfraRed Camera) instrument onboard the NASA/ESA/CSA James Webb Space Telescope,…
The early Universe with JWST and ALMA
Tamura, Y. et al. Detection of the far-infrared [O III] and dust emission in a galaxy at redshift 8.312:…
Astronomers Find Direct Evidence for Supermassive Stars in Early Universe
Astronomers using the NASA/ESA/CSA James Webb Space Telescope have discovered chemical fingerprints of primordial stars weighing between 1,000…
Webb Detects Earliest-Known Supernova Explosion
Astronomers using the NASA/ESA/CSA James Webb Space Telescope have discovered a supernova explosion accompanying the gamma-ray burst event…
Extreme properties of a compact and massive accreting black hole host in the first 500 Myr
Observations and data reduction We utilize data from the CANUCS NIRISS GTO Program #120873, which targets five strong-lensing…
Astronomers model early star clusters – Sciworthy
The universe has not always been like it is today. Investigating the differences between the cosmos we see…
Physicists Revive a 19th-Century Theory of “Cosmic Knots” to Help Untangle the Mysteries of Dark Matter and Neutrinos
A long-dismissed idea involving “cosmic knots” could help explain several of the universe’s most perplexing mysteries—including the origins…
Infant Universe Was Warm, Rather than Cold, before It Lit Up, Astronomers Say
Using the Murchison Widefield Array (MWA) telescope at CSIRO’s Murchison Radio-Astronomy Observatory, astronomers are searching for the elusive…
The signature of subgalactic dark matter clumping in the global 21-cm signal of hydrogen
Carniani, S. et al. Spectroscopic confirmation of two luminous galaxies at a redshift of 14. Nature 633, 318–322…