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.

 

Catch a fleeting kilonova
Alerted by the first-ever gravitational waves caused by two neutron stars merging, astronomers detect the resulting optical flash.
Publ.Date : Mon, 16 Oct 2017 13:26:54 EDT

Scientists discover more about the ingredients for star formation
In the local universe close to us, about 70 percent of the hydrogen gas is found in individual atoms, while the rest is in molecules. Astronomers had expected that as they looked back in time, younger galaxies would contain more and more molecular hydrogen until it dominated the gas in the galaxy. Instead, they found that atomic hydrogen makes up the majority of gas in younger galaxies too.
Publ.Date : Tue, 10 Oct 2017 10:58:16 EDT

Violent helium reaction on white dwarf surface triggers supernova explosion
Astronomers have found solid evidence about what triggered a star to explode, which will contribute to a further understanding of supernova history and behavior.
Publ.Date : Thu, 05 Oct 2017 11:11:15 EDT

NASA's Webb Telescope to witness galactic infancy
Scientists will use NASA's James Webb Space Telescope to study sections of the sky previously observed by NASA's Great Observatories, including the Hubble Space Telescope and the Spitzer Space Telescope, to understand the creation of the universe's first galaxies and stars.
Publ.Date : Wed, 04 Oct 2017 12:04:59 EDT

Nobel Prize in Physics 2017: Gravitational waves
The Nobel Prize in Physics 2017 goes to Rainer Weiss, Barry C. Barish, and Kip S. Thorne "for decisive contributions to the LIGO detector and the observation of gravitational waves."
Publ.Date : Tue, 03 Oct 2017 09:58:28 EDT

Supersonic gas streams left over from the Big Bang drive massive black hole formation
A super-computer simulation by an international team of researchers has shown the formation of a rapidly growing star from supersonic gas streams in the early universe left over from the Big Bang. The star ends its life with catastrophic collapse to leave a black hole with a mass of 34,000 times that of the Sun.
Publ.Date : Thu, 28 Sep 2017 14:20:03 EDT

Bursting with starbirth
This oddly shaped galactic spectacle is bursting with brand new stars. The pink fireworks in this image taken with the NASA/ESA Hubble Space Telescope are regions of intense star formation, triggered by a cosmic-scale collision. The huge galaxy in this image, NGC 4490, has a smaller galaxy in its gravitational grip and is feeling the strain.
Publ.Date : Thu, 28 Sep 2017 10:12:50 EDT

The strange structures of the Saturn nebula
The spectacular planetary nebula NGC 7009, or the Saturn Nebula, emerges from the darkness like a series of oddly-shaped bubbles, lit up in glorious pinks and blues. This colourful image was captured by the MUSE instrument on ESO's Very Large Telescope (VLT). The map -- which reveals a wealth of intricate structures in the dust, including shells, a halo and a curious wave-like feature -- will help astronomers understand how planetary nebulae develop their strange shapes and symmetries.
Publ.Date : Wed, 27 Sep 2017 09:33:19 EDT

Cartography of the Cosmos
There are hundreds of billions of stars in our own Milky Way galaxy, interspersed with all manner of matter, from the dark to the sublime. This is the universe that one group of researchers is trying to reconstruct, structure by structure, combining telescope surveys with next-generation data analysis and simulation techniques currently being primed for exascale computing.
Publ.Date : Tue, 26 Sep 2017 09:16:58 EDT

Oxygen-deficient dwarf galaxy hints at makings of early universe
Astronomers have long searched for understanding of how the universe assembled from simplicity to complexity. A newly studied tiny galaxy is providing clues.
Publ.Date : Mon, 25 Sep 2017 13:29:45 EDT

Detecting cosmic rays from a galaxy far, far away
Where do cosmic rays come from? Solving a 50-year-old mystery, a collaboration of researchers has discovered it's much farther than the Milky Way.
Publ.Date : Thu, 21 Sep 2017 14:12:57 EDT

Is the Milky Way an 'outlier' galaxy? Studying its 'siblings' for clues
The most-studied galaxy in the universe -- the Milky Way -- might not be as 'typical' as previously thought, according to a new study. Early results from the Satellites Around Galactic Analogs (SAGA) Survey indicate that the Milky Way's satellites are much more tranquil than other systems of comparable luminosity and environment. Many satellites of those 'sibling' galaxies are actively pumping out new stars, but the Milky Way's satellites are mostly inert.
Publ.Date : Wed, 20 Sep 2017 11:33:52 EDT

New supernova analysis reframes dark energy debate
The accelerating expansion of the Universe may not be real, but could just be an apparent effect, according to new research. The new study finds the fit of Type Ia supernovae to a model universe with no dark energy to be very slightly better than the fit to the standard dark energy model.
Publ.Date : Wed, 13 Sep 2017 19:31:48 EDT

Explosive birth of stars swells galactic cores
Astronomers found that active star formation upswells galaxies, like yeast helps bread rise. Using three powerful telescopes on the ground and in orbit, they observed galaxies from 11 billion years ago and found explosive formation of stars in the cores of galaxies. This suggests that galaxies can change their own shape without interaction with other galaxies.
Publ.Date : Sun, 10 Sep 2017 23:25:17 EDT

Unique study tests fundamental laws of physics
A study that will ‘test our understanding of how the Universe works, particularly outside the relatively narrow confines of our planet’ is being undertaken by an international team of researchers.
Publ.Date : Tue, 05 Sep 2017 12:54:21 EDT

Crab nebula in the limelight: Unified model for the entire radiation spectrum
The origin of cosmic rays, high-energy particles from outer space constantly impacting on Earth, is among the most challenging open questions in astrophysics. Now research sheds new light on the origin of those energetic particles.
Publ.Date : Tue, 05 Sep 2017 12:48:03 EDT

Stellar corpse sheds light on origin of cosmic rays
New research revealed that the entire zoo of electromagnetic radiation streaming from the Crab nebula -- one of the most iconic objects in the sky -- has its origin in one population of electrons and must be produced in a different way than scientists have traditionally thought. The results have implications for our understanding of how cosmic rays attain their incredible energies.
Publ.Date : Mon, 04 Sep 2017 09:34:52 EDT

Physicists propose new theories of black holes from the very early universe
'Primordial black holes,' believed to have formed shortly after the Big Bang, might explain how heavy elements such as gold, platinum and uranium came to be, physicists report.
Publ.Date : Fri, 01 Sep 2017 13:55:18 EDT

Star-formation ‘fuel tanks’ found around distant galaxies
Astronomers have studied six distant starburst galaxies and discovered that five of them are surrounded by turbulent reservoirs of hydrogen gas, the fuel for future star formation.
Publ.Date : Wed, 30 Aug 2017 17:25:00 EDT

Artificial intelligence analyzes gravitational lenses 10 million times faster
Researchers have for the first time shown that neural networks -- a form of artificial intelligence -- can accurately analyze the complex distortions in spacetime known as gravitational lenses 10 million times faster than traditional methods.
Publ.Date : Wed, 30 Aug 2017 13:22:22 EDT