Tag Archive for 'Galaxy'

This illustration shows what the luminous blue variable star in PHL 293B could have looked like before its mysterious disappearance. Image credit: L. Calçada / ESO.

Massive Variable Star Mysteriously Disappears from Distant Dwarf Galaxy

Jun 30, 2020 by News Staff

Using the X-SHOOTER and the ESPRESSO (Echelle Spectrograph for Rocky Exoplanet- and Stable Spectroscopic Observation) instruments on ESO’s Very Large...

This Hubble image shows a flocculent spiral galaxy called NGC 2775. The image was made from separate exposures taken in the visible, ultraviolet and near-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. Lee / PHANGS-HST Team / Judy Schmidt, www.geckzilla.com.

Hubble Spots Flocculent Spiral Galaxy

Jun 29, 2020 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have captured a spectacular image of the spiral galaxy NGC 2775. This Hubble image shows a flocculent...

This Hubble image shows the edge-on spiral galaxy NGC 5907. Image credit: NASA / ESA / Hubble / R. de Jong / Judy Schmidt, www.geckzilla.com.

Hubble Space Telescope Snaps Image of NGC 5907

Jun 22, 2020 by Enrico de Lazaro

NASA has released a stunning image taken by the NASA/ESA Hubble Space Telescope of the edge-on spiral galaxy NGC 5907. This Hubble image shows the edge-on...

This image from the eROSITA X-ray telescope shows the energetic Universe. As eROSITA scans the sky, the energy of the collected photons is measured with an accuracy ranging from 2% - 6%. To generate this image, in which the whole sky is projected onto an ellipse (so-called Aitoff projection) with the center of the Milky Way in the middle and the body of our Galaxy running horizontally, photons have been color-coded according to their energy (red for energies 0.3-0.6 keV, green for 0.6-1 keV, blue for 1-2.3 keV). The red diffuse glow away from the galactic plane is the emission of the hot gas in the vicinity of the Solar System (the Local Bubble). Along the plane itself, dust and gas absorb the lowest energy X-ray photons, so that only high-energy emitting sources can be seen, and their color appears blue in the image. The hotter gas close to the Galactic center, shown in green and yellow, carries imprinted the history of the most energetic processes in the life of the Milky Way, such as supernova explosions, driving fountains of gas out of the plane, and, possibly, past outburst from the now dormant supermassive black hole in the center of the Milky Way. Piercing through this turbulent, hot diffuse medium, are hundreds of thousands of X-ray sources, which appear mostly white in the image, and uniformly distributed over the sky. Among them, distant active galactic nuclei are visible as point sources, while clusters of galaxies reveal themselves as extended X-ray nebulosities. In total, about one million X-ray sources have been detected in this image. Image credit: Jeremy Sanders, Hermann Brunner & the eSASS team / Max Planck Institute for Extraterrestrial Physics / Eugene Churazov & Marat Gilfanov, IKI.

eROSITA X-Ray Telescope Captures Hot, Energetic Universe

Jun 19, 2020 by News Staff

A new all-sky image from the eROSITA X-ray telescope onboard the Spectrum-Roentgen-Gamma (SRG) space observatory contains over one million objects, about...

An artist’s impression of a water-world exoplanet. Image credit: Sci-News.com.

Ocean Worlds May Be Common in Our Milky Way Galaxy

Jun 19, 2020 by News Staff

A team of U.S. astronomers has calculated internal heating rates for 53 terrestrial exoplanets and found that all of them are likely to have volcanic activity...

This Hubble image shows a massive galaxy cluster (center); along its borders reddish dots are visible; these are copies of the same galaxy called PLCK G045.1+61.1, which is 12 billion light-years away. Image credit: NASA / ESA / Hubble / B. Frye.

Hubble Uses Gravitational Lens to Capture Extremely Distant Starburst Galaxy

Jun 15, 2020 by Enrico de Lazaro

Thanks to the presence of a cosmic lens, the NASA/ESA Hubble Space Telescope got a close-up look at PLCK G045.1+61.1, a starburst galaxy located approximately...

This Hubble image shows NGC 2608, a barred spiral galaxy located 64 million light-years away in the constellation Cancer. The picture was created from images taken with Hubble’s Wide Field Camera 3 (WFC3). It combines observations gathered in four different filters, bringing together visible and infrared light to show off this galaxy in all its glory. 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 Looks at Peculiar Spiral Galaxy

Jun 8, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has produced this stunning image of the barred spiral galaxy NGC 2608. This Hubble image shows NGC 2608, a barred spiral...

An artist’s impression of the early Universe. Image credit: NASA / ESA / Hubble / M. Kornmesser.

Astronomers Find No Evidence of Elusive First-Generation Stars in Early Universe

Jun 4, 2020 by News Staff

Astronomers using the NASA/ESA Hubble Space Telescope have found no evidence of hypothetical first-generation stars — called Population III stars...

About 3.5 million years, a tremendous explosion rocked the center of our galaxy. Our distant hominid ancestors, already afoot on the African plains, likely would have seen the resulting flare as a ghostly glow high overhead in the night sky. Image credit: NASA / ESA / G. Cecil, UNC, Chapel Hill & J. DePasquale, STScI.

Astronomers Uncover New Clues about Ancient Explosion in Milky Way’s Center

Jun 3, 2020 by News Staff

About 3.5 million years ago, a so-called Seyfert flare from Sagittarius A*, Milky Way’s supermassive black hole, created two enormous ionization cones...

Our Milky Way Galaxy is surrounded by an enormous halo of plasma (seen in blue in this artists’ rendition). Image credit: NASA / CXC / M.Weiss / Ohio State / A. Gupta et al.

Milky Way’s Halo Hotter than Previously Thought

Jun 2, 2020 by News Staff

Using deep X-ray observations from ESA’s XMM-Newton Observatory, astronomers have discovered that Milky Way’s halo — a large cloud of ionized...

ASKAP Telescope Traces Four Fast Radio Bursts to Massive Galaxies

Jun 1, 2020 by News Staff

Astronomers using the Australian SKA Pathfinder (ASKAP) telescope at CSIRO’s Murchison Radio-astronomy Observatory have tracked four mysterious blasts...

An artist’s conception illustrates the phenomena that make up the new class of cosmic explosions called fast blue optical transients. Image credit: Bill Saxton / NRAO / AUI / NSF.

New Class of Cosmic Explosions Discovered: Fast Blue Optical Transients

May 28, 2020 by News Staff

Fast blue optical transients (FBOTs) share some characteristics with supernova explosions of massive stars and with explosions that generate gamma-ray...

An artist’s impression of a perturbation in the velocities of stars in the Milky Way Galaxy that was revealed by ESA’s star mapping mission Gaia. Image credit: ESA.

Collision between Milky Way and Its Satellite May Have Triggered Formation of Our Solar System

May 26, 2020 by News Staff

Repeated collisions with the Sagittarius dwarf galaxy may have triggered major star formation episodes in our Milky Way Galaxy, one of which roughly coincided...

An artist’s impression of the collisional ring galaxy R5519. Image credit: James Josephides, Swinburne Astronomy Productions.

Astronomers Find Giant Collisional Ring Galaxy in Early Universe

May 26, 2020 by Sergio Prostak

Astronomers have spotted a giant galaxy with a massive star-forming ring that existed 10.8 billion years ago. An artist’s impression of the collisional...

This Hubble image shows the barred spiral galaxy NGC 3895. Image credit: NASA / ESA / Hubble / R. Barrows.

Hubble Space Telescope Observes NGC 3895

May 25, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured this vivid image of a barred spiral galaxy called NGC 3895. This Hubble image shows the barred spiral...

An artist’s impression of DLA0817g (Wolfe Disk), a massive, rotating disk galaxy in the early, dusty Universe. Image credit: NRAO / AUI / NSF / S. Dagnello.

Massive, Rotating Disk Galaxy Spotted 12.3 Billion Light-Years Away

May 20, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found evidence for the most distant rotationally supported disk galaxy ever...

This Hubble image shows the isolated dwarf galaxy ESO 461-036. This image is made up of observations from Hubble’s Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS) in the infrared and optical parts of the spectrum. Four 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 / E. Shaya et al.

Hubble Spots Lonely Dwarf Galaxy

May 18, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured a striking new photo of a dwarf irregular galaxy called ESO 461-036. This Hubble image shows the isolated...

These two columns show side-by-side comparisons of gravitational lens candidates imaged by the Dark Energy Camera Legacy Survey (color) and the NASA/ESA Hubble Space Telescope (black and white). Image credit: Dark Energy Camera Legacy Survey / NASA / ESA / Hubble / Huang et al.

Astronomers Discover Hundreds of New Strong Gravitational Lenses

May 15, 2020 by News Staff

Using data from the Dark Energy Camera Legacy Survey (DECaLS), astronomers have discovered 335 new candidate strong lensing systems. These two columns...

Abell 2384 contains the giant structures that can result when two galaxy clusters collide. A superheated gas bridge is seen in this composite image with X-rays from Chandra and XMM-Newton (blue), radio emission from the Giant Metrewave Radio Telescope (red) and optical data from the Digitized Sky Survey (yellow). This multi-wavelength view reveals the effects of a jet shooting away from a supermassive black hole in the center of a galaxy in one of the clusters. The jet is so powerful that it is bending the shape of the gas bridge, which extends for over 3 million light-years and has the mass of about 6 trillion solar masses. Image credit: NASA / CXC / SAO / V. Parekh et al / ESA / XMM-Newton / NCRA / GMRT.

Astronomers Spot Enormous Bridge of Hot Gas between Two Galaxy Clusters

May 11, 2020 by News Staff

Astronomers using ESA’s XMM-Newton and NASA’s Chandra X-ray observatories have observed a 3-million-light-year-long bridge of hot gas linking two unequal...

This Hubble image shows NGC 5861, an intermediate spiral galaxy located some 85 million light-years away in the constellation of Libra. The image is made up of observations from Hubble’s Wide Field Camera 3 (WFC3) in the infrared and optical parts of the spectrum. It is based on data obtained through four filters. 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 Captures Stunning Image of NGC 5861

May 11, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has taken a picture of a spiral galaxy called NGC 5861. This Hubble image shows NGC 5861, an intermediate spiral galaxy...

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