Tag Archive for 'Universe'

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.

Quasars are Standardizable Cosmic Candles, Astronomers Say

Sep 14, 2021 by News Staff

Using spectral data from the Sloan Digital Sky Survey (SDSS), the Chandra Source Catalog 2.0, and the Chandra COSMOS Legacy survey, astronomers have found...

Location of the observed O- and B- type stars on the Galactic plane. Image credit: De Cia et al., doi: 10.1038/s41586-021-03780-0.

Milky Way’s Interstellar Medium Is Not Homogeneous, New Study Shows

Sep 9, 2021 by Natali Anderson

Astronomers using the NASA/ESA Hubble Space Telescope have measured the metallicity of the neutral interstellar medium towards 25 bright stars in our Milky...

This image shows the fall of a blue ultradiffuse galaxy into a galaxy system and its subsequent ejection as a red ultradiffuse galaxy. Image credit: Vanina Rodriguez.

New Research Reveals How Ultradiffuse Galaxies Form

Sep 7, 2021 by News Staff

Ultradiffuse galaxies are dwarf galaxies whose stars are spread out over a vast region, resulting in extremely low brightness, making them very difficult...

MG B2016+112: the X-ray light from one of the objects on the left (purple) has been warped by the gravity of the intervening galaxy to produce two beams and X-ray sources (A and B) detected in the Chandra image, which is represented by the dashed square on the right; the X-ray light from the fainter object (blue) produces an X-ray source (C) that has been amplified by the galaxy to be as much as 300 times brighter than it would have been without the lensing; the Chandra image is shown in the inset; these two X-ray-emitting objects are likely a pair of growing supermassive black holes or a growing supermassive black hole and a jet. Image credit: NASA / CXC / M. Weiss / SAO / Schwartz et al.

Chandra Observes Gravitationally-Lensed Supermassive Black Hole System

Sep 1, 2021 by News Staff

By combining gravitational lensing with the capabilities of NASA’s Chandra X-ray Observatory, astronomers have detected two X-ray-emitting objects —...

Dacheng Lin et al discovered a ‘wandering’ black hole in the lenticular galaxy GJ1417+52. The main panel has a wide-field, optical light image from Hubble. The black hole and its host galaxy are located within the box in the upper left. The inset on the left contains Hubble’s close-up view of GJ1417+52. Within this inset the circle shows a point-like source on the northern outskirts of the galaxy that may be associated with XJ1417+52. The inset on the right is Chandra’s X-ray image of XJ1417+52 in purple, covering the same region as the Hubble close-up. Image credit: X-ray – NASA / CXC / UNH / Dacheng Lin et al; optical – NASA / STScI.

Wandering Supermassive Black Holes May Be More Abundant than Previously Thought

Aug 23, 2021 by News Staff

New research led by astronomers from the Harvard & Smithsonian’s Center for Astrophysics shows that the current census of supermassive black holes...

Life may have begun shortly after Earth formed 4.54 billion years ago. Image credit: Hadeano.

Life on Earth Arose Multiple Times and in Multiple Ways, New Theory Says

Aug 17, 2021 by News Staff

In a new theoretical paper, researchers from the Santa Fe Institute provide a new perspective on the origin of life by arguing that life has emerged many...

The two galaxies Norris et al. think are responsible for the streams of electrons (shown as curved arrows) that form the ‘dancing ghosts;’ but the authors don’t understand what is causing the filament labelled as 3. Image credit: Jayanne English & Ray Norris / EMU Project / Dark Energy Survey.

ASKAP Radio Telescope Spots ‘Dancing Ghost’ Galaxies

Aug 10, 2021 by News Staff

Astronomers using CSIRO’s Australian Square Kilometre Array Pathfinder (ASKAP) telescope, a radio telescope situated about 800 km north of Perth, in...

This image shows galaxy Arp 148, captured by NASA’s Spitzer Space Telescope and the NASA/ESA Hubble Space Telescope; specially processed Spitzer data is shown inside the white circle, revealing infrared light from a supernova hidden by dust; this is one five hidden supernovae documented by Fox et al. Image credit: NASA / JPL-Caltech.

Spitzer Discovers Five Dust-Obscured Supernovae

Aug 4, 2021 by News Staff

Astronomers using data from NASA’s Spitzer Space Telescope have looked for dust-extinguished supernovae in the nuclear regions of 40 luminous and ultra-luminous...

Siraj & Loeb explore the possibility that accretion flares resulting from the tidal disruption of small Oort Cloud bodies by a putative primordial black hole could power an observable optical signal that could be searched for with the upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time. Image credit: Sci-News.com / Zdeněk Bardon / ESO.

Theoretical Physicist Solves How Universe is Reflected near Black Hole

Jul 12, 2021 by News Staff

Black holes are famously compact objects where the paths of light are drastically bent by the curvature of space-time. While light itself cannot escape...

An artist’s impression of a black hole-neutron star merger. Image credit: Carl Knox, OzGrav & Swinburne University.

Astronomers Detect Gravitational Waves from Black Hole-Neutron Star Collisions

Jun 29, 2021 by News Staff

Astronomers using NSF’s Laser Interferometer Gravitational-Wave Observatory (LIGO) in the United States and by the Virgo detector in Italy have observed...

An artist’s impression of an intermediate-mass black hole. Image credit: Sci-News.com.

Theoretical Physicists Show How Law of Charge Conservation Could Break Down near Black Hole

Jun 25, 2021 by News Staff

Singularities play an interesting role in physics, and come in many different varieties, from the mathematically and philosophically challenging to the...

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.

First Generation of Stars Emerged 250-350 Million Years after Big Bang, Astronomers Say

Jun 24, 2021 by News Staff

A team of astronomers from the United Kingdom and the United States has examined six of the most distant galaxies currently known and found that the distance...

Does Self-Interacting Dark Matter Produce Seed Black Holes?

Jun 21, 2021 by News Staff

Astrophysical observations show that supermassive black holes exist when the Universe is just 800 million years old after the Big Bang (just 6% of its...

This Hubble image shows NGC 1052-DF2, an ultra-diffuse galaxy located 72 million light-years away in the constellation of Cetus. Image credit: NASA / ESA / Hubble / STScI / Zili Shen & Pieter van Dokkum, Yale University / Shany Danieli, IAS / Alyssa Pagan, STScI.

Astronomers Confirm Existence of Dark-Matter-Deficient Galaxies

Jun 18, 2021 by Enrico de Lazaro

In a new study, astronomers used data from the NASA/ESA Hubble Space Telescope to calculate a more accurate distance to an ultra-diffuse galaxy called...

An artist’s impression of a galactic wind driven by a supermassive black hole located in the center of a galaxy. Image credit: ALMA / ESO / NAOJ / NRAO.

ALMA Detects Powerful Black-Hole Wind in Distant Quasar

Jun 17, 2021 by News Staff

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have detected a galactic-scale supermassive black hole-driven wind in HSC J124353.93+010038.5...

The Giant Arc: the gray contours represent the Mg II absorbers, which indicate the distribution of galaxies and galaxy clusters; the blue dots represent the background quasars; the Giant Arc is centered on this figure spanning -600 to +400 Mpc on the x-axis. Image credit: Lopez et al.

3.3-Billion-Light-Year-Long Arc of Galaxies Discovered

Jun 16, 2021 by News Staff

An international team of astronomers from the United States and the United Kingdom has made the discovery of a giant, almost symmetrical arc of galaxies...

An artist’s impression of cosmic filaments. Image credit: A. Khalatyan/ J. Fohlmeister / Leibniz-Institut für Astrophysik Potsdam.

Astronomers Spot Spinning Filaments of Galaxies

Jun 16, 2021 by News Staff

Cosmic filaments are cylindrical tendrils of matter hundreds of millions of light-years across. In new research, published in the journal Nature Astronomy,...

An artist’s impression of FRB 110523 reaching Earth; the colors represent the burst arriving at different radio wavelengths, with long wavelengths (red) arriving seconds after short wavelengths (blue). Image credit: Jingchuan Yu / Beijing Planetarium.

CHIME Telescope Discovers 535 New Fast Radio Bursts

Jun 11, 2021 by News Staff

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) has detected 535 new fast radio bursts — including 18 repeating sources — during...

The SCORPIO field. Image credit: Umana et al.

ASKAP Detects Compact Radio Sources in Milky Way’s Galactic Plane

May 31, 2021 by News Staff

A team of radio astronomers using CSIRO’s Australian SKA Pathfinder (ASKAP) has mapped the entire area of the Stellar Continuum Originating from Radio...

This deep field image from the Dark Energy Survey is teeming with galaxies; in fact, nearly every single object in this image is a galaxy; some exceptions include a couple of dozen asteroids as well as a few handfuls of foreground stars in our own Milky Way Galaxy. Image credit: Dark Energy Survey / DOE / FNAL / DECam / CTIO / NOIRLab / NSF / AURA / T.A. Rector, University of Alaska Anchorage & NOIRLab / M. Zamani, NOIRLab / D. de Martin, NOIRLab.

Dark Energy Survey Makes Most Precise Measurements Yet of Universe’s Composition and Growth

May 31, 2021 by News Staff

Over the course of six years, astronomers with the Dark Energy Survey (DES) surveyed 5,000 square degrees — almost one-eighth of the entire sky —...

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