Tag Archive for 'Galaxy'

PKS 2014-55 is classified as ‘X-shaped’ because of its appearance in previous relatively blurry images. The detail provided in this radio image obtained with the MeerKAT telescope indicates that its shape is best described as a double boomerang. Two powerful jets of radio waves, indicated in blue color, each extend 2.5 million light-years into space. Eventually, they are ‘turned back’ by the pressure of tenuous intergalactic gas. As they flow back towards the central galaxy, they are deflected by its relatively high gas pressure into the shorter, horizontal, arms of the boomerang. The background image shows visible light from myriad galaxies in the distant Universe. Image credit: NRAO / AUI / NSF / SARAO / DES.

Astronomers Crack Mystery of X-Shaped Radio Galaxies

May 8, 2020 by News Staff

Astronomers using the MeerKAT telescope at the South African Radio Astronomy Observatory in Cape Town, South Africa, have solved a longstanding mystery...

This Hubble image shows NGC 3147, a spiral galaxy located some 130 million light-years from Earth in the constellation of Draco. Image credit: NASA / ESA / S. Bianchi, Università degli Studi Roma Tre University / A. Laor, Technion-Israel Institute of Technology / M. Chiaberge, ESA, STScI & JHU.

Spiral Galaxies More Likely to Host Complex Life: Study

May 4, 2020 by News Staff

Giant elliptical galaxies are not as likely as previously thought to be cradles of complex life, according to a paper published in the Monthly Notices...

This Hubble image shows the barred spiral galaxy NGC 3583. The color image was made from separate exposures taken in the visible and near-infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). Three filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / A. Riess et al.

Hubble Snaps Beautiful Image of NGC 3583

May 4, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has produced an outstanding image of a barred spiral galaxy called NGC 3583. This Hubble image shows the barred spiral...

This artist’s impression shows how ULAS J1120+0641, a very distant quasar powered by a black hole with a mass two billion times that of the Sun, may have looked. Image credit: M. Kornmesser / ESO.

New Measurements of Fine-Structure Constant Suggest Laws of Nature Not as Constant as Previously Thought

Apr 29, 2020 by News Staff

The fine-structure constant is a measure of electromagnetism — one of the four fundamental forces in nature; the others are gravity, weak nuclear...

Chandra and XMM-Newton data indicate that a white dwarf survived a close call with the central black hole in GSN 069. Image credit: NASA / CXO / CSIC-INTA / G. Miniutti et al / CXC / M. Weiss.

Near-Miss Tidal Disruption: White Dwarf Survives Close Encounter with Supermassive Black Hole

Apr 28, 2020 by News Staff

Professor Andrew King from the University of Leicester has shown that periodic X-ray eruptions from a galaxy called GSN 069 could result from the core...

This Hubble image shows a spiral galaxy called NGC 4100. Image credit: NASA / ESA / Hubble / L. Ho.

Hubble Looks at Stunning Spiral Galaxy: NGC 4100

Apr 27, 2020 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have captured a striking new photo of the spiral galaxy NGC 4100. This Hubble image shows a spiral...

Simulation showing distribution of dark matter particles around a galaxy. Image credit: Gupta et al / ASTRO 3D / IllustrisTNG Collaboration.

Study: Massive Galaxies Grow Large by Eating Their Smaller Satellites

Apr 22, 2020 by News Staff

In a new study, an international team of astronomers led by ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) combined data...

A simulated galaxy image from the FIRE-2 project, representing a structure spanning more than 200,000 light-years, shows the prominent plumes of young blue stars born in gas that was originally rotating and then blown radially outward by supernova explosions. Image credit: Sijie Yu / University of California Irvine.

Stars Born in Outflows May Populate Halos of Milky Way-Like Galaxies

Apr 20, 2020 by News Staff

Clusters of supernovas can cause the birth of scattered, eccentrically orbiting stars in outer halos of Milky Way-mass galaxies, according to new research...

This Hubble image shows the dwarf elliptical galaxy LEDA 29388. Image credit: NASA / ESA / Hubble / T. Armandroff.

Hubble Observes Little-Know Dwarf Elliptical Galaxy

Apr 20, 2020 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have obtained a remarkable view of the dwarf galaxy LEDA 29388. This Hubble image shows the dwarf...

This Hubble image shows NGC 2906, a spiral galaxy located 145 million light-years away in the constellation of Leo. The color image was made from separate exposures taken in the visible and near-infrared regions of the spectrum with Hubble’s Advanced Camera for Surveys (ACS) instrument. Two filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / A. Filippenko.

Hubble Space Telescope Captures Beautiful Image of NGC 2906

Apr 13, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured a vivid image of a star-forming spiral galaxy called NGC 2906. This Hubble image shows NGC 2906, a spiral...

Catastrophic Collapse of Giant Stars’ Magnetic Fields Powers Gamma-Ray Bursts

Apr 9, 2020 by News Staff

Gamma-ray bursts are the most energetic explosions in the Universe, beaming out huge jets of light-emitting plasma, which travel through space at 0.99...

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

Universe is Anisotropic on Large Scales, New Study Suggests

Apr 9, 2020 by News Staff

Space-based X-ray observations of hundreds of galaxy clusters suggest that the Universe may be different depending on which way astronomers look. The study...

This artist’s impression illustrates how high-speed jets from supermassive black holes would look. Image credit: NASA / ESA / Hubble / L. Calçada, ESO.

Astronomers Observe Relativistic Jet from Two Merging Spiral Galaxies

Apr 8, 2020 by News Staff

Astronomers using the 8.2-m Subaru Telescope report the first unambiguous detection of a relativistic jet — a beam of charged particles that travels...

This Hubble image shows the spiral galaxy NGC 2273. The color image was made from separate exposures taken in the visible and infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). It is based on data obtained through five filters. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / J. Greene.

Hubble Space Telescope Spots Multiring Galaxy

Apr 6, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has produced an outstanding image of a spiral galaxy called NGC 2273. This Hubble image shows the spiral galaxy NGC...

An artist’s impression of MG J0414+0534. Image credit: Kindai University.

ALMA Uses Cosmic Lens to Capture Disturbed Gas Clouds in Distant Quasar

Mar 31, 2020 by News Staff

By combining the power of strong gravitational lensing with the capability of the Atacama Large Millimeter/submillimeter Array (ALMA), a team of astronomers...

This Hubble image shows the spiral galaxy NGC 4651. The color image was made from separate exposures taken in the visible and near-infrared regions of the spectrum with Hubble’s Advanced Camera for Surveys (ACS) instrument. Two filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / D. Leonard.

Hubble Snaps Stunning Image of NGC 4651

Mar 30, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured a detailed image of a spiral galaxy called NGC 4651. This Hubble image shows the spiral galaxy NGC 4651....

Reynolds et al used Chandra to look for extraordinarily low-mass axion-like particles in the Perseus galaxy cluster, a group of galaxies located 240 million light-years away from Earth. The observation lasting over five days showed no evidence for certain axion-like particles, which some theorists think can explain dark matter. The lack of detection in these Chandra observations helps rule out some versions of string theory, a set of models intended to tie together all known forces, interactions, and particles. Image credit: NASA / CXC / University of Cambridge / Reynolds et al.

Astrophysicists Perform Test of String Theory

Mar 25, 2020 by News Staff

Astrophysicists using NASA’s Chandra X-ray Observatory have looked for signs of an as-yet undetected particle predicted by string theory, a set of models...

The collision of two black holes. Image credit: Simulating eXtreme Spacetimes Project.

Astronomers Propose New Mechanism for Growth of Supermassive Black Hole Seeds

Mar 24, 2020 by Enrico de Lazaro

In a paper published in the Astrophysical Journal, a team of astronomers in Italy proposes that heavy seeds of supermassive black holes formed via the...

This Hubble image shows the barred spiral galaxy NGC 4618. The color image was made from separate exposures taken in the visible and near-infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS) instruments. Three filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / I. Karachentsev.

NGC 4618: Hubble Spots Spiral Galaxy with Single Arm

Mar 23, 2020 by News Staff

The NASA/ESA Hubble Space Telescope has captured an amazing new photo of an unusual spiral galaxy called NGC 4618. This Hubble image shows the barred spiral...

An artist’s impression of a quasar. Image credit: NASA / ESA / J. Olmsted, STScI.

Hubble Space Telescope Spots Quasar Tsunamis

Mar 20, 2020 by News Staff

Quasars are the ultra-bright cores of distant active galaxies. These objects are among the most distant and luminous objects known. Their central engines...

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