Current Universe News and Events

Current Universe News and Events, Universe News Articles.
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Nonlinear ionization dynamics of hot dense plasma observed in a laser-plasma amplifier
Understanding the behavior of light-matter interaction under extreme conditions, such as in high-density plasmas, is important for our identification of cosmologic objects and the formation of the universe. Researchers at the Universities of Jena, Germany, California in Berkeley, USA, Madrid, Spain, and the Institut Polytechnique de Paris, France have succeeded in directly observing the formation and interaction of highly ionized krypton plasma using femtosecond coherent ultraviolet light and a novel four-dimensional model. (2020-11-19)

Does the human brain resemble the Universe?
An astrophysicist of the University of Bologna and a neurosurgeon of the University of Verona compared the network of neuronal cells in the human brain with the cosmic network of galaxies... and surprising similarities emerged (2020-11-16)

Cosmic flashes come in all different sizes
By studying the site of a spectacular stellar explosion seen in April 2020, a Chalmers-led team of scientists have used four European radio telescopes to confirm that astronomy's most exciting puzzle is about to be solved. Fast radio bursts, unpredictable millisecond-long radio signals seen at huge distances across the universe, are generated by extreme stars called magnetars - and are astonishingly diverse in brightness. (2020-11-16)

History of temperature changes in the Universe revealed
How hot is the Universe today? How hot was it before? A new study by an international team of researchers, including members of the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), suggests that the mean temperature of gas in large structures of the Universe has increased about 3 times in the last 8 billion years, to reach about two million Kelvin today. (2020-11-13)

Dark matter from the depths of the universe
Cataclysmic astrophysical events such as black hole mergers could release energy in unexpected forms. Exotic low-mass fields (ELFs), for example, could propagate through space and cause feeble signals detectable with quantum sensor networks such as the atomic clocks of the GPS network or the magnetometers of the GNOME network. These results are particularly interesting in the context of the search for dark matter, as low-mass fields are regarded as promising candidates for this exotic form of matter. (2020-11-11)

Galaxies have gotten hotter as they've gotten older
Who says you can't get hotter with age? Researchers from Johns Hopkins University and other institutions have found that, on average, the temperature of galaxy clusters today is 4 million degrees Fahrenheit. That is 10 times hotter than 10 billion years ago, and four times hotter than the Sun's outermost atmosphere called the corona. The findings are published in the Astrophysical Journal. (2020-11-10)

The universe is getting hot, hot, hot, a new study suggests
The universe is getting hotter, a new study has found. The study, published Oct. 13 in the Astrophysical Journal, probed the thermal history of the universe over the last 10 billion years. It found that the mean temperature of gas across the universe has increased more than 10 times over that time period and reached about 2 million degrees Kelvin today -- approximately 4 million degrees Fahrenheit. (2020-11-10)

Seeing dark matter in a new light
A small team of astronomers have found a new way to 'see' the elusive dark matter haloes that surround galaxies, with a new technique 10 times more precise than the previous-best method. The work is published in Monthly Notices of the Royal Astronomical Society. (2020-11-06)

Has the hidden matter of the universe been discovered?
Astrophysicists consider that around 40% of the ordinary matter that makes up stars, planets and galaxies remains undetected, concealed in the form of a hot gas in the complexe cosmic web. Today, scientists at the Institut d'Astrophysique Spatiale (CNRS/Université Paris-Saclay) may have detected, for the first time, this hidden matter through an innovative statistical analysis of 20-year-old data. Their findings are published on November 6, 2020 in Astronomy & Astrophysics. (2020-11-06)

Astronomers discover clues that unveil the mystery of fast radio bursts
UNLV astrophysicist Bing Zhang and international collaborators recently observed fast radio bursts, powerful radio waves coming from deep space that have been among the most mysterious astronomical phenomena ever observed. Zhang and colleagues contribute to our understanding of where they come from and how they're produced in a series of papers published in Nature. (2020-11-05)

FAST reveals mystery of fast radio bursts from the universe
The Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has revealed some mystery of the fast radio bursts, according to a study published in Nature on Oct. 28. (2020-11-04)

Galaxies in the very early universe were surprisingly mature
Massive galaxies were already much more mature in the early universe than previously expected. This is the conclusion of an international team of astronomers who studied distant galaxies with the Atacama Large Millimeter/submillimeter Array (ALMA). The result is now published by the National Radio Astronomy Observatory. (2020-10-30)

Measuring the expansion of the universe: Researchers focus on velocity
There seems to be a discrepancy between measurement of the expansion of the Universe using radiation in the early Universe and using nearby objects. Researchers from the Cosmic Dawn Center, at the Niels Bohr Institute, University of Copenhagen, have now contributed to this debate by focusing on velocity (2020-10-29)

Solved: the mystery of how dark matter in galaxies is distributed
In a recent article in Astronomy & Astrophysics Letters, scientists at the Instituto de Astrofísica de Canarias (IAC)/University of La Laguna (ULL) and of the National University of the North-West of the Province of Buenos Aires (Junín, Argentina) have shown that the dark matter in galaxies follows a 'maximum entropy' distribution, which sheds light on its nature. (2020-10-28)

The Grantecan finds the farthest black hole that belongs to a rare family of galaxies
An international team of astronomers has identified one of the rarest known classes of gamma-ray emitting galaxies, called BL Lacertae, within the first 2 billion years of the age of the Universe. The team has used one of the largest optical telescope in the world, Gran Telescopio Canarias (GTC), located at the Observatorio del Roque de los Muchachos (Garafía, La Palma). The finding is published in The Astrophysical Journal Letters. (2020-10-27)

Galaxies in the infant universe were surprisingly mature
ALMA telescope conducts largest survey yet of distant galaxies in the early universe. (2020-10-27)

Surprisingly mature galaxies in the early Universe
When the Universe was only a tenth of its current age its galaxies experienced a growth spurt. It was this period that the scientists in the ALPINE project focused on when they used ESO's ALMA telescope to carry out the first ever large survey of distant galaxies. To their surprise, these galaxies observed in the early stages of their life were far more mature than expected. (2020-10-27)

The Milky Way galaxy has a clumpy halo
Astronomers at the University of Iowa have determined our galaxy is surrounded by a clumpy halo of hot gases that is continually being supplied with material ejected by birthing or dying stars. The halo also may be where matter unaccounted for since the birth of the universe may reside. Results published in the journal Nature Astronomy. (2020-10-19)

Astrophysics team lights the way for more accurate model of the universe
In a study first published Aug. 5 in The Astrophysical Journal Letters, University of Texas at Dallas scientists demonstrated the first use of a method called self-calibration to remove contamination from gravitational lensing signals. The results should lead to more accurate cosmological models of the universe. (2020-10-19)

Australian research shows NASA's James Webb telescopes will reveal hidden galaxies
Simulations show it's possible to distinguish host galaxy from quasars, although still challenging due to the galaxy's small size on the sky. (2020-10-15)

Upgraded GMRT measures the mass of hydrogen in distant galaxies
A team of astronomers from the National Centre for Radio Astrophysics Pune, and the Raman Research Institute (RRI), Bengaluru, has used the upgraded GMRT to measure the atomic hydrogen content of galaxies 8 billion years ago. This is the earliest epoch in the universe for which there is a measurement of the atomic gas content of galaxies. This research has been published in the 14 October 2020 issue of the journal Nature. (2020-10-15)

Low-metallicity globular star cluster challenges formation models
On the outskirts of the nearby Andromeda Galaxy, researchers have unexpectedly discovered a globular cluster (GC) - a massive congregation of relic stars - with a very low abundance of chemical elements heavier than hydrogen and helium (known as its metallicity), according to a new study. (2020-10-15)

Anemic star cluster breaks metal-poor record
In a surprising discovery, astronomers using two Maunakea Observatories - W. M. Keck Observatory and Canada-France-Hawaii Telescope (CFHT) - have found a star cluster in the Andromeda Galaxy that contains a record-breaking low amount of metals, calling into question the so-called 'metallicity-floor' for massive globular star clusters. (2020-10-15)

Scientists author papers in Nature Astronomy chronicling legacy of Spitzer space telescope
NASA's Spitzer Space Telescope, decommissioned earlier this year, made important discoveries about comets, stars, exoplanets and distant galaxies, leaving a lasting legacy of solar system science. A team of more than a dozen scientists from the US and Europe collaborated on two review papers published in the journal Nature Astronomy inventorying the major discoveries made possible by Spitzer. (2020-10-12)

Hubble sees swirls of forming stars
At around 60 million light-years from Earth, the Great Barred Spiral Galaxy, NGC 1365, is captured beautifully in this image by the NASA/ESA Hubble Space Telescope. (2020-10-09)

The black hole always chirps twice: New clues deciphering the shape of black holes
A team of gravitational-wave scientists led by the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) reveal that when two black holes collide and merge, the remnant black hole 'chirps' not once, but multiple times, emitting gravitational waves--intense ripples in the fabric space and time--that inform us about its shape. Today the study has been published in Communications Physics (from the prestigious Nature journal). (2020-10-08)

Astronomers turn up the heavy metal to shed light on star formation
Astronomers from The University of Western Australia's node of the International Centre for Radio Astronomy Research (ICRAR) have developed a new way to study star formation in galaxies from the dawn of time to today. Using a new algorithm to model the energy and wavelengths of light coming from almost 7000 nearby galaxies, the researchers succeeded in reconstructing when most of the stars in the Universe formed--in agreement with telescope observations for the first time. (2020-10-06)

Revealing secret of lithium-rich stars by monitoring their heartbeats
A recent study from an international team led by Prof. ZHAO Gang, Prof. SHI Jianrong, and Dr. YAN Hongliang from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) found that most lithium-rich stars are the so-called ''red clumps'' rather than the ''red giants'' as previously thought. (2020-10-05)

Hubble observes spectacular supernova time-lapse
The NASA/ESA's Hubble Space Telescope has tracked the fading light of a supernova in the spiral galaxy NGC 2525, located 70 million light years away. Supernovae like this one can be used as cosmic tape measures, allowing astronomers to calculate the distance to their galaxies. Hubble captured these images as part of one of its major investigations, measuring the expansion rate of the Universe, which can help answer fundamental questions about our Universe's very nature. (2020-10-01)

Hubble watches exploding star fade into oblivion
When a star unleashes as much energy in a matter of days as our Sun does in several billion years, you know it's not going to remain visible for long. Like intergalactic paparazzi, NASA's Hubble Space Telescope captured the quick, fading celebrity status of a supernova, the self-detonation of a star. (2020-10-01)

Astrophysicist probes cosmic "dark matter detector"
A CU Boulder astrophysicist is searching the light coming from a distant, and extremely powerful celestial object, for what may be the most elusive substance in the universe: dark matter. (2020-09-29)

Scientists precisely measure total amount of matter in the universe
A top goal in cosmology is to precisely measure the total amount of matter in the universe, a daunting exercise for even the most mathematically proficient. A team led by scientists at the University of California, Riverside, has now done just that. (2020-09-28)

Gravity causes homogeneity of the universe
Gravity can accelerate the homogenization of space-time as the universe evolves. This insight is based on theoretical studies of the physicist David Fajman of the University of Vienna. The results have been published in the journal 'Physical Review Letters'. (2020-09-24)

Young physicist 'squares the numbers' on time travel
Paradox-free time travel is theoretically possible, according to the mathematical modelling of a prodigious University of Queensland undergraduate student. (2020-09-23)

Elements of surprise: neutron stars contribute little, but something's making gold, research finds
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. (2020-09-15)

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. Mayer Humi, a scientist from the Worcester Polytechnic Institute, believes it provides an apt study target for theories about protoplanetary rings around stars. The research is published in the Journal of Mathematical Physics. (2020-09-15)

Big answers from tiny particles
A team of physicists led by Kanazawa University 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. (2020-09-14)

Holding up a mirror to a dark matter discrepancy
The universe's funhouse mirrors are revealing a difference between how dark matter behaves in theory and how it appears to act in reality. (2020-09-11)

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. In order to investigate the cosmic origins of elementary particles with even higher energies, Prof. Elisa Resconi from the Technical University of Munich (TUM) has now started an international initiative to build a neutrino telescope several cubic kilometers in size in the northeastern Pacific. (2020-09-10)

FSU-led research team discovers unique supernova explosion
A 7-member international research team led by Florida State University Assistant Professor of Physics Eric Hsiao discovered a supernova that could help uncover the origins of the group of supernovae this star belongs to. (2020-09-10)

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