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.

 

VLBA makes first direct distance measurement to magnetar
Using the VLBA, astronomers have made the first direct geometric measurement of the distance to a magnetar. This precision measurement to one of the most magnetic objects in the Universe could help scientists determine if such objects are responsible for generating the mysterious Fast Radio Bursts.
Publ.Date : Fri, 18 Sep 2020 10:42:36 EDT

From star to solar system: How protoplanetary rings form in primordial gas clouds
The star HL Tauri is glowing at the center of a system of concentric rings made from gas and dust and producing planets, one for each gap in the ring. Its discovery has shaken solar system origin theories to their core.
Publ.Date : Tue, 15 Sep 2020 12:13:28 EDT

Elements of surprise: Neutron stars contribute little, but something's making gold
Neutron star collisions do not create the quantity of chemical elements previously assumed, a new analysis of galaxy evolution finds. The research also reveals that current models can't explain the amount of gold in the cosmos - creating an astronomical mystery. The work has produced a new-look Periodic Table, showing the stellar origins of naturally occurring elements from carbon to uranium.
Publ.Date : Tue, 15 Sep 2020 11:00:10 EDT

Big answers from tiny particles
Physicists demonstrate a theoretical mechanism that would explain the tiny value for the mass of neutrinos and point out that key operators of the mechanism can be probed by current and future experiments. This work may provide a breakthrough for big philosophical quandaries, including why matter exists.
Publ.Date : Mon, 14 Sep 2020 11:22:14 EDT

New Hubble data suggests there is an ingredient missing from current dark matter theories
Recent observations have found that something may be missing from the theories of how dark matter behaves. This missing ingredient may explain why researchers have uncovered an unexpected discrepancy between observations of the dark matter concentrations in a sample of massive galaxy clusters and theoretical computer simulations of how dark matter should be distributed in clusters.
Publ.Date : Thu, 10 Sep 2020 15:03:48 EDT

Unique supernova explosion
Astronomers have discovered a supernova that could help uncover the origins of the group of supernovae this star belongs to.
Publ.Date : Thu, 10 Sep 2020 13:04:16 EDT

Revealing the secrets of high-energy cosmic particles
The 'IceCube' neutrino observatory deep in the ice of the South Pole has already brought spectacular new insights into cosmic incidents of extremely high energies. Astronomers observe the light that comes to us from distant celestial objects to explore the Universe. However, light does not tell us much about the highest energy events beyond our Galaxy, such as the jets of active galactic nuclei, gamma-ray bursts or supernovae, because photons in the upper gamma-ray range lose their extreme energies on their long way through the Universe through interaction with other particles.
Publ.Date : Thu, 10 Sep 2020 10:06:05 EDT

Giant particle accelerator in the sky
A new study shows that electrons in the radiation belts can be accelerated to very high speeds locally. The study shows that magnetosphere works as a very efficient particle accelerator speeding up electrons to so-called ultra-relativistic energies.
Publ.Date : Thu, 10 Sep 2020 09:01:06 EDT

An unexpected origin story for a lopsided black hole merger
A lopsided merger of two black holes may have an oddball origin story, according to a new study.
Publ.Date : Wed, 02 Sep 2020 18:24:42 EDT

Zooming in on dark matter
Cosmologists have zoomed in on the smallest clumps of dark matter in a virtual universe - which could help us to find the real thing in space.
Publ.Date : Wed, 02 Sep 2020 11:44:51 EDT

Researchers predict location of novel candidate for mysterious dark energy
New research explains what may be the cause of the universe's accelerating growth.
Publ.Date : Tue, 01 Sep 2020 12:07:39 EDT

Can a black hole fire up the cold heart of the Phoenix Galaxy Cluster?
Radio astronomers have detected jets of hot gas blasted out by a black hole in the galaxy at the heart of the Phoenix Galaxy Cluster, located 5.9 billion light-years away in the constellation Phoenix. This is an important result for understanding the coevolution of galaxies, gas, and black holes in galaxy clusters.
Publ.Date : Mon, 31 Aug 2020 09:47:32 EDT

Rare encounters between cosmic heavyweights
Astronomers have discovered three pairs of merging galaxies. Each of the galaxies contain a supermassive black hole that's feasting on material surrounding it, creating a phenomenon called a quasar. These luminous dual quasars are rare; only about 0.3% of all known quasars have two supermassive black holes that are on a collision course with each other.
Publ.Date : Thu, 27 Aug 2020 10:21:20 EDT

Galactic bar paradox resolved in cosmic dance
New light has been shed on a mysterious and long-standing conundrum at the very heart of our galaxy. The new work offers a potential solution to the so-called 'Galactic bar paradox', whereby different observations produce contradictory estimates of the motion of the central regions of the Milky Way.
Publ.Date : Tue, 25 Aug 2020 11:07:23 EDT

The most sensitive instrument in the search for life beyond Earth
Researchers have developed the highly sensitive ORIGIN instrument, which can provide proof of the smallest amounts of traces of life, for future space missions. The instrument may be used on missions to the ice moons of Europa (Jupiter) and Enceladus (Saturn), for example.
Publ.Date : Wed, 19 Aug 2020 12:07:20 EDT

How stars form in the smallest galaxies
The question of how small, dwarf galaxies have sustained the formation of new stars over the course of the Universe has long confounded the world's astronomers. An international research team has found that dormant small galaxies can slowly accumulate gas over many billions of years. When this gas suddenly collapses under its own weight, new stars are able to arise.
Publ.Date : Wed, 12 Aug 2020 14:41:06 EDT

Extremely young galaxy is Milky Way look-alike
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have revealed an extremely distant and therefore very young galaxy that looks surprisingly like our Milky Way. The galaxy is so far away its light has taken more than 12 billion years to reach us: we see it as it was when the Universe was just 1.4 billion years old. It is also surprisingly unchaotic, contradicting theories that all galaxies in the early Universe were turbulent and unstable.
Publ.Date : Wed, 12 Aug 2020 11:53:04 EDT

'Black dwarf supernova': Physicist calculates when the last supernova ever will happen
New theoretical research finds that many white dwarfs may explode in supernova in the distant far future, long after everything else in the universe has died and gone quiet.
Publ.Date : Wed, 12 Aug 2020 11:33:54 EDT

New method to determine the origin of stardust in meteorites
Scientists have made a key discovery thanks to stardust found in meteorites, shedding light on the origin of crucial chemical elements.
Publ.Date : Tue, 11 Aug 2020 12:01:11 EDT

Explosive nuclear astrophysics
An international team has made a key discovery related to 'presolar grains' found in some meteorites. This discovery has shed light on stellar explosions and the origin of chemical elements. It has also provided a new method for astronomical research.
Publ.Date : Mon, 10 Aug 2020 14:10:00 EDT