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.
|How colliding neutron stars could shed light on universal mysteries|
Researchers have discovered an unusual pulsar - one of deep space's magnetized spinning neutron-star 'lighthouses' that emits highly focused radio waves from its magnetic poles. It is unusual because the masses of its two neutron stars are quite different -- with one far larger than the other. The breakthrough provides clues about unsolved mysteries in astrophysics -- including the expansion rate of the Universe (the Hubble constant).
Publ.Date : Wed, 08 Jul 2020 12:14:39 EDT
White dwarfs reveal new insights into the origin of carbon in the universe
A new analysis of white dwarf stars supports their role as a key source of carbon in galaxies. Every carbon atom in the universe was created by stars, but astrophysicists still debate which types of stars are the primary source of the carbon in our galaxy. Some studies favor low-mass stars that blew off their envelopes in stellar winds and became white dwarfs, while others favor massive stars that eventually exploded as supernovae.
Publ.Date : Mon, 06 Jul 2020 14:08:58 EDT
Beacon from the early universe
Often described as cosmic lighthouses, quasars are luminous beacons that can be observed at the outskirts of the Universe, providing a rich topic of study for astronomers and cosmologists. Now scientists have announced the discovery of the second-most distant quasar ever found, at more than 13 billion lightyears from Earth.
Publ.Date : Wed, 01 Jul 2020 16:01:32 EDT
Hidden sources of mysterious cosmic neutrinos seen on Earth
A new model points to the coronoe of supermassive black holes at the cores of active galaxies to help explain the excess neutrinos observed by the IceCube Neutrino Observatory.
Publ.Date : Wed, 01 Jul 2020 08:47:50 EDT
To find giant black holes, start with Jupiter
On a quest to find the Universe's largest black holes, researchers identify the center of the solar system within 100 meters.
Publ.Date : Tue, 30 Jun 2020 12:51:36 EDT
Case for axion origin of dark matter gains traction
In a new study of axion motion, researchers propose a scenario known as ''kinetic misalignment'' that greatly strengthens the case for axion/dark matter equivalence. The novel concept answers key questions related to the origins of dark matter and provides new avenues for ongoing detection efforts.
Publ.Date : Fri, 26 Jun 2020 12:50:21 EDT
Monster black hole found in the early universe
Astronomers have discovered the second-most distant quasar ever found. It is the first quasar to receive an indigenous Hawaiian name, Poniua'ena. Data show the supermassive black hole powering Poniua'ena is surprisingly massive, challenging current theories of how supermassive black holes formed and grew in the young universe.
Publ.Date : Thu, 25 Jun 2020 14:07:23 EDT
Scientists provide new explanation for the far side of the Moon's strange asymmetry
The Earth-Moon system's history remains mysterious. Scientists believe the two formed when a Mars-sized body collided with the proto-Earth. Earth ended up being the larger daughter of this collision and retained enough heat to become tectonically active. The Moon, being smaller, likely cooled down faster and geologically 'froze'. The apparent dynamism of the Moon challenges this idea. New data suggest this is because radioactive elements were distributed uniquely after the catastrophic Moon-forming collision.
Publ.Date : Mon, 22 Jun 2020 09:50:19 EDT
Quasar jets are particle accelerators thousands of light-years long
An international collaboration bringing together over 200 scientists from 13 countries has shown that the very high-energy gamma-ray emission from quasars is not concentrated in the region close to their central black hole but in fact extends over several thousand light-years along jets of plasma. This discovery shakes up current scenarios for the behaviour of such plasma jets.
Publ.Date : Wed, 17 Jun 2020 15:00:27 EDT
Scientists carry out first space-based measurement of neutron lifetime
Scientists have found a way of measuring neutron lifetime from space for the first time -- a discovery that could teach us more about the early universe.
Publ.Date : Thu, 11 Jun 2020 18:39:19 EDT
New distance measurements bolster challenge to basic model of universe
A cosmic measurement technique independent of all others adds strong evidence pointing to a problem with the current theoretical model describing the composition and evolution of the Universe.
Publ.Date : Thu, 11 Jun 2020 13:31:27 EDT
Hubble makes surprising find in the early universe
New results from the NASA/ESA Hubble Space Telescope suggest the formation of the first stars and galaxies in the early Universe took place sooner than previously thought. A European team of astronomers have found no evidence of the first generation of stars, known as Population III stars, as far back as when the Universe was just 500 million years old.
Publ.Date : Wed, 03 Jun 2020 19:44:15 EDT
New test of dark energy and expansion from cosmic structures
A new paper has shown how large structures in the distribution of galaxies in the Universe provide the most precise tests of dark energy and cosmic expansion yet.
Publ.Date : Wed, 03 Jun 2020 12:05:51 EDT
Large simulation finds new origin of supermassive black holes
Computer simulations conducted by astrophysicists have revealed a new theory for the origin of supermassive black holes. In this theory, the precursors of supermassive black holes grow by swallowing up not only interstellar gas, but also smaller stars as well. This helps to explain the large number of supermassive black holes observed today.
Publ.Date : Tue, 02 Jun 2020 11:00:54 EDT
Class of stellar explosions found to be galactic producers of lithium
Astrophysicists have combined theory with both observations and laboratory studies and determined that a class of stellar explosions, called classical novae, are responsible for most of the lithium in our galaxy and solar system.
Publ.Date : Mon, 01 Jun 2020 14:48:23 EDT
Asymmetry found in spin directions of galaxies
The patterns formed by spiral galaxies show that the universe may have a defined structure and suggest that the early universe could have been spinning, according to a computational astronomer.
Publ.Date : Mon, 01 Jun 2020 13:46:12 EDT
The Milky Way has one very hot halo, astronomers find
The halo that surrounds our own Milky Way galaxy is much hotter than scientists once believed - and it may not be unique among galaxies.
Publ.Date : Mon, 01 Jun 2020 11:33:28 EDT
Cosmic bursts unveil universe's missing matter
Astronomers have used mysterious fast radio bursts to solve a decades-old mystery of 'missing matter', long predicted to exist in the Universe but never detected -- until now. The researchers have now found all of the missing 'normal' matter in the vast space between stars and galaxies.
Publ.Date : Wed, 27 May 2020 13:31:55 EDT
'Cosmic ring of fire' 11 billion years ago: How did structures in early universe form?
Astronomers have captured an image of a super-rare type of galaxy -- described as a 'cosmic ring of fire' -- as it existed 11 billion years ago.
Publ.Date : Mon, 25 May 2020 11:56:57 EDT
How cosmic rays may have shaped life
Physicists propose that the influence of cosmic rays on early life may explain nature's preference for a uniform 'handedness' among biology's critical molecules.
Publ.Date : Wed, 20 May 2020 19:14:11 EDT