How Would Galaxies Form in a Universe Without Dark Matter? Researchers Find Out
A study by the University of Bonn simulates a universe in which Newton’s laws are only valid to a limited extent. For the first time,…
Galaxy Evolution News
Cosmic Order Emerging From Chaos: Galactic Fountains and Carousels Unveiled
Scientists from Germany and the United States have unveiled the results of a newly-completed, state of the art simulation of the evolution of galaxies. TNG50…
Massive Galaxy Cluster Abell 959 Is 3,000 Times the Mass of Milky-Way
Most galaxies lie in clusters containing from a few to thousands of objects. Our Milky Way, for example, belongs to the Local Group, a cluster…
Physicists Identify Some of the Oldest Galaxies in the Universe
Physicists have discovered that some of the faintest satellite galaxies orbiting our own Milky Way galaxy are amongst the very first that formed in our…
Astronomers Discover New Way to Unlock the Mysteries of the First Galaxies
A team of astronomers has discovered a new way to unlock the mysteries of how the first galaxies formed and evolved. In a study published…
ALMA and APEX Discover Ancient Galaxy Megamerger
The ALMA and APEX telescopes have peered deep into space — back to the time when the Universe was one tenth of its current age…
New Fundamental Law Stipulates the Evolution of Galaxy Clusters
Analysis of gravitational lensing data by an international research team reveals that the evolution of galaxy clusters is dictated by a surprisingly simple law, which…
Hubble Telescope Discovers Ancient “Relic Galaxy” In Our Cosmic Backyard
Astronomers have put NASA’s Hubble Space Telescope on an Indiana Jones-type quest to uncover an ancient “relic galaxy” in our own cosmic backyard. The very…
Hubble Telescope Captures Spectacular Image of a Galactic Merger
Galaxies are not static islands of stars — they are dynamic and ever-changing, constantly on the move through the darkness of the Universe. Sometimes, as…
Astronomers See Evidence of Something Unexpected in the Universe
Astronomers have used NASA’s Hubble Space Telescope to make the most precise measurements of the expansion rate of the universe since it was first calculated…
New Simulation Shows What Happens When the Milky Way and Andromeda Galaxies Collide
Astronomers have discovered that our nearest big neighbor, the Andromeda galaxy, is roughly the same size as the Milky Way. It had been thought that…
Chandra Shows Supermassive Black Holes Are Outgrowing Their Galaxies
The biggest black holes in the Universe are growing faster than the rate of stars being formed in their galaxies, according to two new studies…
ALMA Reveals Rotating Dense Molecular Torus Around an Active Supermassive Black Hole
High-resolution observations with the Atacama Large Millimeter/submillimeter Array (ALMA) imaged a rotating dusty gas torus around an active supermassive black hole. The existence of such…
New Discovery Challenges Popular Theory About Dwarf Galaxies
A new international study involving The Australian National University (ANU) has found a plane of dwarf galaxies orbiting around Centaurus A in a discovery that…
Observations of Massive Galaxies in the Early Universe Reveal Rare Dark-Matter Haloes
The South Pole Telescope (SPT) is a 10-meter-diameter telescope in the Antarctic that has been operating at millimeter- and submillimeter-waves for a decade; the CfA…
Outer Halo of the Milky Way Contains Stellar Remains of Devoured Galaxies
An international team of astronomers led by Giuseppina Battaglia, researcher at the Instituto de Astrofísica de Canarias (IAC), finds signs that the outer halo of…
Astronomers Measure How A Galaxy’s Spin Affects Its Shape
In a newly published study, a team of astronomers measures how a galaxy’s spin affects its shape. It sounds simple, but measuring a galaxy’s true…
Astronomers Reveal the Role of Mergers in Shaping Galaxies
A new analysis of eighteen thousand colliding galaxies reveals that mergers like the one in galaxy NGC 4676 are the dominant mechanism for determining the…