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galaxies

MCG+07-07-072, a spiral bar galaxy in the Perseus cluster, stands out in its ring-like spiral arms in this Hubble image. Credit: ESA/Hubble & NASA, I. Chilingarian

Heavenly beauty: discover a "ring galaxy" that challenges expectations

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The "ring galaxy" classification is reserved for unique galaxies with a circular ring of gas and star formation, much as spiral arms are seen, but completely detached from the galactic nucleus - or even without a nucleus at all.
Computer simulations made by astronomers, including those at the University of California at Irvine, support the existence of dark matter. Although dark matter has not been directly detected, many scientists believe it must exist to explain various phenomena in the observable universe.

Properties of galaxies reveal the invisible hand of dark matter

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Astronomical computer simulations point to strong evidence that dark matter exists, supported by observations of features in galaxies that are hard to explain without it
The black holes orbiting each other. Both black holes have jets associated with them: the larger one in red, the smaller one in yellow. Normally only the red jet is visible, but in the 12 hours on November 12, 2021 the small jet was dominant, giving a direct signal from the smaller black hole, and was observed for the first time. Credit: NASA/JPL-Caltech/R. Hurt (IPAC) & M. Mugrauer (AIU Jena)

NASA's Planet Hunter takes a rare look at two black holes in a distant galaxy

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Two black holes orbit each other but usually only see the jet of one of them A rare observation made it possible to see the other as well and provide new insights
Hubble's Advanced Surveying Camera captured this detailed image of the galaxy NGC 5253 using its High Resolution Channel, which operated between 2002 and 2007. The image highlights the active star formation regions of the galaxy. Credit: ESA/Hubble & NASA, WD Vacca

Star show: Hubble's rare glimpse of star formation at the core of a distant galaxy

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Hubble's Advanced Camera for Surveys captured this detailed image of the galaxy NGC 5253, highlighting regions of active star formation at the core of a distant galaxy.
Simulation of a smooth halo of stars around the Milky Way. Figure: ESA

Gaia: The Milky Way's last major collision happened surprisingly recently

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An artist's rendering of a Tidal Disruption Event (TDE), a star torn apart by the powerful gravity of a massive black hole. Credit: Sophia Dagnello, NRAO/AUI/NSF

Cosmic Archaeology: Using Black Holes to Discover Evidence of the Universe's First Stars

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To date there have been no convincing direct detections of Pop III stars - the first stars, because these stars formed in the early universe are very far away and too faint for our ground-based telescopes or
The black hole's accretion disk. Illustration: depositphotos.com

How a black hole grows

Researchers have developed a method for mapping the central regions around black holes, which contributes to a better understanding of their growth
Stars are born. Science site credit via DALEE. The image is for illustration only and should not be seen as a scientific image

The place where stars are born

In interstellar molecular clouds, large molecules can form despite the non-ideal conditions prevailing there
Infographic: the history of the universe. Credit: NASA

Artificial intelligence seeks to solve the dark energy problem

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This is according to the Dark Energy Survey Partnership, of which University College London is a founding member, hosts the Fermi National Accelerator Laboratory in the United States and includes more than 400 scientists from 25 institutions in 7 countries
An image of Jupiter taken by Juno in 2019, showing storm zones in the northern hemisphere. Credit: Enhanced image by Kevin M. Gill (CC-BY) based on images provided courtesy of NASA/JPL-Caltech/SwRI/MSSS

Extrasolar Planet Hunter Targets Jupiter: A New Twist in the Space Exploration Plot

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For the first time, NASA activated a tool designed to discover planets many light years away on an object in the solar system, in a study of the winds of Jupiter
Merging galaxies create the most powerful radio burst ever discovered. The image was prepared using Dali (artificial intelligence) and should not be considered a scientific image

The Hubble Space Telescope reveals the origin of the most powerful radio burst ever recorded

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"Astronomers discover that the fastest radio burst ever observed came not from a single galaxy, but from a group of merging galaxies"
Hubble Space Telescope image showing the spiral galaxies NGC 1356, LEDA 467699, LEDA 95415, and IC 1947. Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey/DOE/FNAL/NOIRLab/NSF/AURA, image credit : L. Shatz

The Great Galactic Illusion: Revealing the Real Distances in Space

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The two-dimensional reflection of the galaxies in the night sky does not say much about the real distances between the galaxies and between them and the Earth
This image, showing an elliptical galaxy (left) and a spiral galaxy (right) includes nearby AA light from the James Webb Space Telescope and UV light seen from the Hubble Space Telescope. Credit: NASA, ESA, CSA, Rogier Windhorst (ASU), William Keel ( University of Alabama), Stuart Wyithe (University of Melbourne), JWST PEARLS Team, Alyssa Pagan (STScI)

Explanation of a strange cosmic phenomenon: astrophysicists discovered why there are no spiral galaxies in our supergalactic plane

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Astrophysicists have discovered why spiral galaxies like our Milky Way are rare in the supergalactic plane, a dense region of our local universe
objects in the universe. Illustration: depositphotos.com

From the Big Bang to the Big Picture: A New Comprehensive Look at All Objects in the Universe

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Researchers from the Australian National University have developed a model that is the most comprehensive view of the history of the universe. The study highlights the change that the universe has undergone from the moment of its formation 13.8 billion years ago to its current, full state
Harvard astronomers claim that the Milky Way's warped shape is due to an unbalanced halo of dark matter. This claim supports theories of a previous galactic collision and provides insights into the nature of dark matter. Credit: Stefan Payne-Wardenaar; Magellanic Clouds: Robert Gendler/ESO

Dark matter and galactic collisions: Harvard astronomers explain the mysterious curvature of the Milky Way

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The cause of this is a distorted dark matter halo
An artist's rendering of a collection of pulsars detecting gravitational waves from pairs of orbiting supermassive black holes. Credit: Aurore Simonnet for the NANOGrav Collaboration

Proof that the Earth is surrounded by a sea of ​​slow gravitational waves

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"The effect of gravitational waves on pulsars is very weak and difficult to detect, but we built the credibility of the findings over time as we collected more data," said Caterina Cazziano, NANOGrav team member and senior lecturer at Caltech.
Impressively, a pair of supermassive black holes (top left) emit gravitational waves that propagate through the fabric of space-time. These gravitational waves compress and stretch the trajectories of radio waves that emit pulsars (in white). By carefully measuring the radio waves, a team of scientists recently discovered for the first time the gravitational wave background of the universe. Credit: Aurore Simonnet for the NANOGrav Collaboration

Noisier than expected: Gravitational waves from supermassive black hole mergers "heard" for the first time

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NANOGrav Discovers Stronger Gravitational Waves Than Ever, Apparently Created by Pairs of Supermassive Black Holes
Gravitational waves are created by a pair of stars turning into black holes. Illustration: depositphotos.com

Gravitational waves light up the universe

Gravitational wave analysis hints at the way black hole pairs are formed
A large spotted pink wheel-like galaxy with a small inner ellipse, with a hazy blue in the middle to the right, with two smaller spiral galaxies of about the same size to the left on a black background. This image of the Wheel Galaxy and its companion galaxies is a composite from the Near Infrared Camera and Webb's Mid-Infrared Instrument, which reveals details that are difficult to see from the separate images alone. Credit: NASA, ESA, CSA, STScI

The Webb Space Telescope Peeps Into Chaos - Captures Stellar Gymnastics in the Wheel Galaxy

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Webb's instruments reveal new details about star formation
The Stephan V group of galaxies (actually IV) - galaxies caught in a sort of cosmic dance, as imaged by a variety of infrared instruments on the James Webb Space Telescope. Image credit: NASA, ESA, CSA and STScI

The James Webb Telescope sheds light on the evolution of galaxies and black holes in the Stefan quintet

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The proximity of four of the five Stefan galaxies to each other (the fifth only seems close) allows astronomers to ignite galactic mergers and intergalactic reactions. And also how the black holes affect the flow of matter
Distant galaxies. Illustration: depositphotos.com

Scientists reveal 4.4 million galaxies in new map

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"These data represent a significant step forward in astrophysics and can be used to search for a wide variety of signals, from nearby planets or galaxies to faint signatures in the distant universe." the researchers write
Image of Arp 195 taken by the Hubble Space Telescope, a spectacular three-sided gravitational tug of war between galaxies

Hubble captures a spectacular three-way gravitational tug of war between galaxies

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This system - named Earp 195 - appears in the Atlas of Peculiar Galaxies, a list that shows some of the weirder and wonderful galaxies in the universe
Galaxies shaped like jellyfish. Photo courtesy of Dr. Elad Singer and Kiyun Yun - PhD student in the research group in Germany

The cosmic jellyfish project is underway, come help

The galaxy cluster ACO S 295 imaged by the Hubble Space Telescope. Credit: ESA/Hubble and NASA, P. Pakud, D. Kua

A celebration of galaxies: 'Hubble' captures a cluster with galaxies of all shapes and sizes

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This galactic cluster boasts a variety of directions, with spiral galaxies like the one in the center of this image that are almost visible from above, and some spiral galaxies that are only visible as thin slices of light when viewed from the side. This is in addition
The three images from top to bottom show what the evolutionary trajectory of galaxies such as XMM-2599 looks like, which starts out as a dusty galaxy full of star formation, then becomes a dead galaxy, possibly becoming the "brightest galaxy cluster" Credit: (NRAO/AUI/NSF/ B. Saxton; NASA/ESA/R. Foley; NASA/StScI)

Astronomers discover an unusual monstrous galaxy in the very early universe

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