A New Helium Measurement Is Testing the Universe’s First Five Minutes
The research team focused on 15 of the most “pristine” small, remote galaxies ever discovered for these papers.…
Astronomers Detect a Faint Hydrogen Signal From Billions of Light-Years Away
A faint hydrogen signal from billions of light-years away could help astronomers build a new 3D map of…
Scientists Say the Universe Isn’t Slowing Down After All
The universe is still speeding up, scientists say, keeping dark energy and its mysterious role in cosmic expansion…
Signatures of suppressed matter clustering revealed by fast radio bursts
The LSST Dark Energy Science Collaboration et al. The LSST Dark Energy Science Collaboration (DESC) science requirements document.…
Astronomers confirm Einstein’s gravity by viewing light from behind a supermassive black hole
Astronomers detected delayed X-ray flashes consistent with light reflected from the far side of an accretion disk and…
The universe may contain a staggering 40 quintillion black holes
Astronomers estimate that about 40 quintillion stellar-mass black holes exist within the observable universe, a number written as…
‘Cosmic Glitch’ could explain why gravity acts differently across the Universe
Einstein’s theory of gravity may behave slightly differently across distances of billions of light-years, with gravity appearing about…
Cosmic plasma was supposed to rule out dark photons. Simulations say otherwise
A major limit on dark photon dark matter may be far weaker because early-universe plasma stops absorbing energy…
The Milky Way glows brightly in first-of-its-kind neutrino image
IceCube has produced the first neutrino image of the Milky Way, revealing high-energy particle activity concentrated along our…
Astronomers have observed a wandering black hole shredding a star
ⓘ NASA – Unsplash An illustration showing a star and a galaxy. Astronomers have recently detected a black…
Vigorous turbulence driven by quasar-mode feedback in a cluster core
The X-Ray Imaging and Spectroscopy Mission (XRISM)1 is the successor to the Hitomi X-ray observatory2, which ceased operations…
New study challenges existing knowledge for why galaxies stop forming stars
Most galaxy collisions do not cause galaxies to stop making new stars.A galaxy’s central black hole and its…