Cosmology News

Courtesy of Science Daily

Welcome to Sea and Sky's Cosmology News. Here you can find links to the latest space news headlines about cosmology and astrophysics. Click on any yellow title below to view the full news article. The news article will open in a new browser window. Simply close the browser window when you are finished reading the article to return to the news article listing. You can use the "Click for More" link to go to a page with more news headlines.

 

Hubble's cosmic bubbles
Hubble has revealed a few of the tenuous threads comprising Sh2-308, a faint and wispy shell of gas located 5,200 light-years away in Canis Major.
Publ.Date : Fri, 21 Apr 2017 11:32:54 EDT

Light rays from a supernova bent by the curvature of space-time around a galaxy
Astronomers have detected for the first time multiple images from a gravitationally lensed Type Ia supernova. The new observations suggest promising new avenues for the study of the accelerated expansion of the universe, gravity and distribution of dark matter in the universe.
Publ.Date : Thu, 20 Apr 2017 14:17:58 EDT

Hubble celebrates 27 years with two close friends
This stunning cosmic pairing of the two very different looking spiral galaxies NGC 4302 and NGC 4298 was imaged by the NASA/ESA Hubble Space Telescope. The image brilliantly captures their warm stellar glow and brown, mottled patterns of dust.
Publ.Date : Thu, 20 Apr 2017 11:37:50 EDT

Astronomers perform largest-ever survey of high-mass binary star systems
82 new high-mass binaries located in the Tarantula Nebula, also known as 30 Doradus, have been identified and characterized in the Large Magellanic Cloud, an international group of astronomers reports.
Publ.Date : Thu, 20 Apr 2017 09:02:48 EDT

Supermassive black holes stifle galaxy growth
Supermassive black hole winds in a newly discovered class of galaxies are so energetic they suppress future star formation.
Publ.Date : Tue, 18 Apr 2017 11:53:45 EDT

Milky Way: Hydrogen halo lifts the veil of our galactic home
Astronomers have reported the first detections of diffuse hydrogen wafting about in a vast halo surrounding the Milky Way.
Publ.Date : Tue, 18 Apr 2017 11:15:04 EDT

Meet 'DeeDee,' a distant, dim member of our solar system
Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have revealed extraordinary details about a recently discovered far-flung member of our solar system, the planetary body 2014 UZ224, more informally known as DeeDee.
Publ.Date : Wed, 12 Apr 2017 11:57:49 EDT

Collisions generate gas in debris disks
By examining the atomic carbon line from two young star systems -- 49 Ceti and Beta Pictoris -- researchers had found atomic carbon in the disk, the first time this observation has been made at sub-millimeter wavelength, hinting that the gas in debris disks is not primordial, but rather is generated from some process of collisions taking place in the debris disk.
Publ.Date : Wed, 12 Apr 2017 10:13:08 EDT

First 'image' of a dark matter web that connects galaxies
Researchers have been able to capture the first composite image of a dark matter bridge that connects galaxies together.
Publ.Date : Wed, 12 Apr 2017 09:12:30 EDT

Scientist measures brightness of the universe with NASA's New Horizons spacecraft
Images taken by NASA's New Horizons mission on its way to Pluto, and now the Kuiper Belt, have given scientists an unexpected tool for measuring the brightness of all the galaxies in the universe.
Publ.Date : Tue, 11 Apr 2017 13:58:42 EDT

Long ago and far away, an average galaxy: 'Typical' galaxy helps astronomers study epoch of reionization
Using a giant galaxy cluster as a cosmic-scale lens, astronomers have discovered a galaxy from the early universe that they think is 'typical' of its time. This could help astronomers better understand the Epoch of Reionization when the first galaxies appeared.
Publ.Date : Mon, 10 Apr 2017 12:40:28 EDT

Doubly accelerated electrons detected in collisions of galaxy clusters
A cosmic phenomenon resulting from the acceleration of a gas cloud by a black hole and its reacceleration by the shock waves from the merging of two galaxy clusters has been described by an international collaboration of astronomers. The study enriches scientists' understanding of the universe on the largest scale.
Publ.Date : Tue, 04 Apr 2017 16:00:31 EDT

Basic plasma wave physics reshaped by NASA observations
NASA scientists are reshaping the basic understanding of a type of wave in space known as a kinetic Alfvén wave.
Publ.Date : Fri, 31 Mar 2017 13:08:30 EDT

Satellite galaxies at edge of Milky Way coexist with dark matter
New research rules out a challenge to the accepted standard model of the universe and theory of how galaxies form by shedding new light on a problematic structure.
Publ.Date : Thu, 30 Mar 2017 16:49:59 EDT

Explaining the accelerating expansion of the universe without dark energy
Enigmatic dark energy, thought to make up 68% of the universe, may not exist at all, according to a Hungarian-American team. The researchers believe that standard models of the universe fail to take account of its changing structure, but that once this is done the need for dark energy disappears.
Publ.Date : Thu, 30 Mar 2017 11:52:54 EDT

Shadow of agas cloud detected in an ancient proto-supercluster
The Suprime-Cam on the Subaru Telescope has been used to create the most-extensive map of neutral hydrogen gas in the early universe. This cloud appears widely spread out across 160 million light-years in and around a structure called the proto-supercluster. It is the largest structure in the distant universe, and existed some 11.5 billion years ago. Such a huge gas cloud is extremely valuable for studying large-scale structure formation and the evolution of galaxies from gas in the early universe, and merits further investigation.
Publ.Date : Wed, 29 Mar 2017 10:37:11 EDT

Stars born in winds from supermassive black holes
Observations using ESO's Very Large Telescope have revealed stars forming within powerful outflows of material blasted out from supermassive black holes at the cores of galaxies. These are the first confirmed observations of stars forming in this kind of extreme environment. The discovery has many consequences for understanding galaxy properties and evolution.
Publ.Date : Mon, 27 Mar 2017 11:46:04 EDT

Milky Way-like galaxies in early universe embedded in 'super halos'
Astronomers have directly observed a pair of Milky Way-like galaxies seen when the universe was only eight percent of its current age. These progenitors of today's giant spiral galaxies are surrounded by 'super halos' of hydrogen gas that extend many tens-of-thousands of light-years beyond their dusty, star-filled disks.
Publ.Date : Thu, 23 Mar 2017 14:14:05 EDT

Astronomers find unexpected, dust-obscured star formation in distant galaxy
Pushing the limits of the largest single-aperture millimeter telescope in the world, and coupling it with gravitational lensing, astronomers report that they have detected a surprising rate of star formation, four times higher than previously detected, in a dust-obscured galaxy behind a Frontier Fields cluster.
Publ.Date : Thu, 23 Mar 2017 12:54:53 EDT

New portal to unveil the dark sector of the universe
Once upon a time, the Universe was just a hot soup of particles. In those days, together with visible particles, other particles to us hidden or dark might have formed. Billions of years later scientists catalogued 17 types of visible particles, with the most recent one being the Higgs boson, creating the 'Standard Model'. However, they are still struggling to detect the hidden particles, the ones that constitute the dark sector of the Universe.
Publ.Date : Thu, 23 Mar 2017 08:39:04 EDT