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 celebrates its 29th birthday with unrivaled view of the Southern Crab Nebula
This incredible image of the hourglass-shaped Southern Crab Nebula was taken to mark the NASA/ESA Hubble Space Telescope's 29th anniversary in space. The nebula, created by a binary star system, is one of the many objects that Hubble has demystified throughout its productive life. This new image adds to our understanding of the nebula and demonstrates the telescope's continued capabilities.
Publ.Date : Thu, 18 Apr 2019 13:14:19 EDT

Origin of photons in mysterious gamma-ray bursts
Scientists have used simulations to show that the photons emitted by long gamma-ray bursts -- one of the most energetic events to take place in the universe -- originate in the photosphere -- the visible portion of the 'relativistic jet' that is emitted by exploding stars.
Publ.Date : Wed, 03 Apr 2019 08:04:46 EDT

The rise and fall of Ziggy star formation and the rich dust from ancient stars
Researchers have detected a radio signal from abundant interstellar dust in MACS0416_Y1, a galaxy 13.2 billion light-years away in the constellation Eridanus. Standard models can't explain this much dust in a galaxy this young, forcing us to rethink the history of star formation. Researchers now think MACS0416_Y1 experienced staggered star formation with two intense starburst periods 300 million and 600 million years after the Big Bang with a quiet phase in between.
Publ.Date : Tue, 19 Mar 2019 16:35:29 EDT

How heavy elements come about in the universe
Heavy elements are produced during stellar explosion or on the surfaces of neutron stars through the capture of hydrogen nuclei (protons). This occurs at extremely high temperatures, but at relatively low energies.
Publ.Date : Mon, 18 Mar 2019 11:19:45 EDT

Understanding and controlling the molecule that made the universe
Trihydrogen, or H3+, is acknowledged by many scientists as the molecule that made the universe. Researchers employed high-speed lasers to shine a spotlight on the mechanisms that are key in H3+ creation and its unusual chemistry.
Publ.Date : Wed, 13 Mar 2019 11:47:41 EDT

Astronomers discover 83 supermassive black holes in the early universe
Astronomers have discovered 83 quasars powered by supermassive black holes that were formed when the universe was only 5 percent of its current age.
Publ.Date : Wed, 13 Mar 2019 11:47:28 EDT

Investigation of the origin of heavy elements
Atomic physicists working on nuclear fusion research succeeded in computing the world's highest accuracy atomic data of neodymium ions which is used in analysis of the light from a binary neutron star merger. This research accelerates studies of a long-standing mystery about the cosmic origins of heavy elements.
Publ.Date : Tue, 12 Mar 2019 09:25:16 EDT

What does the Milky Way weigh? Hubble and Gaia investigate
We can't put the whole Milky Way on a scale, but astronomers have been able to come up with one of the most accurate measurements yet of our galaxy's mass, using NASA's Hubble Space Telescope and the European Space Agency's Gaia satellite.
Publ.Date : Thu, 07 Mar 2019 13:14:12 EST

Anemic galaxy reveals deficiencies in ultra-diffuse galaxy formation theory
A team of astronomers have discovered a bizarre, solitary ultra-diffuse galaxy (UDG). This transparent, ghost-like galaxy, named DGSAT I, contradicts the current theory on the formation of UDGs. All previously studied UDGs have been in galaxy clusters.
Publ.Date : Wed, 27 Feb 2019 11:11:23 EST

ALMA differentiates two birth cries from a single star
Astronomers have unveiled the enigmatic origins of two different gas streams from a baby star. Using ALMA, they found that the slow outflow and the high speed jet from a protostar have misaligned axes and that the former started to be ejected earlier than the latter. The origins of these two flows have been a mystery, but these observations provide telltale signs that these two streams were launched from different parts of the disk.
Publ.Date : Tue, 26 Feb 2019 11:23:05 EST

New NASA mission could find more than 1,000 planets
A NASA telescope that will give humans the largest, deepest, clearest picture of the universe since the Hubble Space Telescope could find as many as 1,400 new planets outside Earth's solar system, new research suggests.
Publ.Date : Mon, 25 Feb 2019 13:37:25 EST

Gravitational waves will settle cosmic conundrum
Measurements of gravitational waves from approximately 50 binary neutron stars over the next decade will definitively resolve an intense debate about how quickly our universe is expanding, according to new findings.
Publ.Date : Thu, 14 Feb 2019 11:55:49 EST

Spacecraft measurements reveal mechanism of solar wind heating
A new study describes the first direct measurement of how energy is transferred from the chaotic electromagnetic fields in space to the particles that make up the solar wind, leading to the heating of interplanetary space.
Publ.Date : Thu, 14 Feb 2019 08:46:58 EST

Scientists observe a new form of strange matter
In a discovery that could provide new insights into the origin of mass in the universe following the Big Bang, scientists have used experiments with kaons and helium-3 to experimentally demonstrate, for the first time, the existence of an exotic nucleus containing two protons and a bound kaon.
Publ.Date : Mon, 28 Jan 2019 09:14:40 EST

How to escape a black hole: Simulations provide new clues about powerful plasma jets
New simulations have combined decades-old theories to provide new insight about the driving mechanisms in plasma jets that allows them to steal energy from black holes' powerful gravitational fields and propel it far from their gaping mouths.
Publ.Date : Thu, 24 Jan 2019 13:38:32 EST

Making the Hubble's deepest images even deeper
It has taken researchers almost three years to produce the deepest image of the Universe ever taken from space, by recovering a large quantity of 'lost' light around the largest galaxies in the Hubble Ultra-Deep Field.
Publ.Date : Thu, 24 Jan 2019 08:48:12 EST

Birth of massive black holes in the early universe
The light released from around the first massive black holes in the universe is so intense that it is able to reach telescopes across the entire expanse of the universe. Incredibly, the light from the most distant black holes (or quasars) has been traveling to us for more than 13 billion light years. However, we do not know how these monster black holes formed.
Publ.Date : Wed, 23 Jan 2019 13:17:30 EST

Seeing double could help resolve dispute about how fast the universe is expanding
How fast the universe is expanding has been puzzling astronomers for almost a century. Different studies keep coming up with different answers -- which has some researchers wondering if they've overlooked a key mechanism in the machinery that drives the cosmos. Now, by pioneering a new way to measure how quickly the cosmos is expanding, astronomers have taken a step toward resolving the debate.
Publ.Date : Tue, 22 Jan 2019 17:13:25 EST

Milky Way's neighbors pick up the pace
After slowly forming stars for the first few billion years of their lives, the Magellanic Clouds, near neighbors of our own Milky Way galaxy, have upped their game and are now forming new stars at a fast clip. This new insight into the history of the Clouds comes from the first detailed chemical maps made of galaxies beyond the Milky Way.
Publ.Date : Tue, 22 Jan 2019 11:50:37 EST

New quantum structures in super-chilled helium may mirror early days of universe
Experimental proof of a decades-old prediction opens a pathway to recreate possible conditions of the early universe here on earth.
Publ.Date : Wed, 16 Jan 2019 09:06:53 EST