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UrduThe researchers Juan A. Fernández-Ontiveros, of the Istituto Nazionale di Astrofisica (INAF) in Rome and Teo Muñoz-Darias, of the Instituto de Astrofísica de Canarias (IAC), have written an article in which they describe the different states of activity of a…
Tag: ASTROPHYSICS
NASA’s Roman mission to probe cosmic secrets using exploding stars
NASA’s upcoming Nancy Grace Roman Space Telescope will see thousands of exploding stars called supernovae across vast stretches of time and space. Using these observations, astronomers aim to shine a light on several cosmic mysteries, providing a window onto the…
Deep oceans dissolve the rocky shell of water-ice planets
What is happening deep beneath the surface of ice planets? Is there liquid water, and if so, how does it interact with the planetary rocky “seafloor”? New experiments show that on water-ice planets between the size of our Earth and…
Does the Milky Way move like a spinning top?
An investigation carried out by the astrophysicists of the Instituto de Astrofísica de Canarias (IAC) ?ofia Chrobáková, a doctoral student at the IAC and the University of La Laguna (ULL), and Martín López Corredoira, questions one of the most interesting…
Study reveals new details on what happened in the first microsecond of Big Bang
Researchers from University of Copenhagen have investigated what happened to a specific kind of plasma – the first matter ever to be present – during the first microsecond of Big Bang.
Candid cosmos: eROSITA cameras set benchmark for astronomical imaging
An overview and performance assessment of the seven cameras of eROSITA, a space x-ray telescope launched in 2019
New insights into behavior of ultra-dense star core
Neutron stars are often gravitationally locked with another star and over time siphon off some of the other star’s outermost surfaces. Now, a scientist at PPPL has helped explain two phenomena associated with this process that have long baffled researchers.
36 Dwarf Galaxies Had Simultaneous “Baby Boom” of New Stars
Three dozen dwarf galaxies far from each other had a simultaneous “baby boom” of new stars, an unexpected discovery that challenges current theories on how galaxies grow and may enhance our understanding of the universe. Galaxies more than 1 million light-years apart should have completely independent lives in terms of when they give birth to new stars. But galaxies separated by up to 13 million light-years slowed down and then simultaneously accelerated their birth rate of stars, according to a Rutgers-led study published in the Astrophysical Journal.
36 dwarf galaxies had simultaneous ‘baby boom’ of new stars
Surprising finding challenges current theories on how galaxies grow
Milky Way not unusual, astronomers find
Detailed cross-section of another galaxy reveals surprising similarities to our home
Leicester astronomers look ahead to first light from James Webb Space Telescope
Leicester space scientists will join a group of global experts investigating fundamental questions about our Universe, after being granted time to use the most advanced observatory ever built. A total of 286 scientific targets identified by astronomers and planetary scientists…
Plasma jets reveal magnetic fields far, far away
Radio telescope images enable a new way to study magnetic fields in galaxy clusters millions of light years away
Not all theories can explain the black hole M87*
As first pointed out by the German astronomer Karl Schwarzschild, black holes bend space-time to an extreme degree due to their extraordinary concentration of mass, and heat up the matter in their vicinity so that it begins to glow.
Chandra discoveries in 3D available on new platform
A collection of the 3D objects from NASA’s Chandra X-ray Observatory is now available on a new platform from the Smithsonian Institution. This will allow greater access to these unique 3D models and prints for institutions like libraries and museums…
ALMA discovers the most ancient galaxy with spiral morphology
Analyzing data obtained with the Atacama Large Millimeter/submillimeter Array (ALMA), researchers found a galaxy with a spiral morphology by only 1.4 billion years after the Big Bang. This is the most ancient galaxy of its kind ever observed. The discovery…
Hubble tracks down fast radio bursts to galaxies’ spiral arms
Astronomers using NASA’s Hubble Space Telescope have traced the locations of five brief, powerful radio blasts to the spiral arms of five distant galaxies. Called fast radio bursts (FRBs), these extraordinary events generate as much energy in a thousandth of…
Searching for the Origins of Presolar Grains
Some meteorites contain microscopic grains of stardust created by nucleosynthesis before our solar system existed. Many grains contain sulfur isotopes that are clues to the grains’ origins in novae and supernovae. Sulfur production from nucleosynthesis depends on the prior production of argon-34. Scientists created and studied argon-34 and established criteria for determining whether particular grains originated in novae or supernovae.
Nickel atoms detected in the cold gas around interstellar comet 2I/Borisov
Unbound nickel atoms and other heavy elements have been observed in very hot cosmic environments, including the atmospheres of ultra-hot exoplanets and evaporating comets that ventured too close to our Sun or other stars. A new study conducted by JU…
Heavy metal vapors unexpectedly found in comets throughout our Solar System — and beyond
A new study by a Belgian team using data from the European Southern Observatory’s Very Large Telescope (ESO’s VLT) has shown that iron and nickel exist in the atmospheres of comets throughout our Solar System, even those far from the…
NASA’s Webb to study how massive stars’ blasts of radiation influence their environments
In a nearby stellar nursery called the Orion Nebula, young, massive stars are blasting far-ultraviolet light at the cloud of dust and gas from which they were born. This intense flood of radiation is violently disrupting the cloud by breaking…
A revolutionary method to drastically reduce stray light on space telescopes
A team of researchers at the Centre Spatial de Liège (CSL) of the University of Liège has just developed a method to identify the contributors and origins of stray light on space telescopes. This is a major advance in the…
Alien radioactive element prompts creation rethink
The first-ever discovery of an extraterrestrial radioactive isotope on Earth has scientists rethinking the origins of the elements on our planet. The tiny traces of plutonium-244 were found in ocean crust alongside radioactive iron-60. The two isotopes are evidence of…
LHAASO discovers a dozen PeVatrons and photons exceeding 1 PeV and launches ultra-high-energy gamma
China’s Large High Altitude Air Shower Observatory (LHAASO)–one of the country’s key national science and technology infrastructure facilities–has found a dozen ultra-high-energy (UHE) cosmic accelerators within the Milky Way. It has also detected photons with energies exceeding 1 peta-electron-volt (quadrillion…
SMU professor receives NASA funding to study Active Galactic Nuclei
DALLAS (SMU) – Krista Lynne Smith, an assistant professor of physics at SMU, has received a grant from NASA to study one of the most extreme objects in the universe – Active Galactic Nuclei. These objects, called AGN for short,…
NSF EPSCoR grant will advance understanding of neutrinos and support new faculty
LAWRENCE — Neutrinos are almost intangible subatomic particles that hardly interact with matter in the universe. Billions of neutrinos are shooting through your body as you read this sentence, and you don’t even notice. Explosive deep-space events like gamma-ray bursts,…
Staring into space: Physicists predict neutron stars may be bigger than previously imagined
That neutron star is the densest celestial body that astronomers can observe, with a mass about 1.4 times the size of the sun. However, there is still little known about these impressive objects. Now, a Florida State University researcher has published a piece in Physical Review Letters arguing that new measurements related to the neutron skin of a lead nucleus may require scientists to rethink theories regarding the overall size of neutron stars. In short, neutron stars may be larger than scientists previously predicted.
Space weather and solar blobs
Scientists at PPPL have been awarded three grants from NASA totaling over $2 million to conduct research that could help predict the potentially damaging effects of blasts of subatomic particles from the sun.
New look at a bright stellar nursery
VLA observations reveal changes over time
UBCO researcher uses geology to help astronomers find habitable planets
Findings will help better identify Earth-like planets that could sustain life
Confirmation of an auroral phenomenon discovered by Finns
A new auroral phenomenon discovered by Finnish researchers a year ago is probably caused by areas of increased oxygen atom density occurring in an atmospheric wave channel. The speculative explanation offered by the researchers gained support from a new study.…
Machine learning accelerates cosmological simulations
Using neural networks, researchers can now simulate universes in a fraction of the time, advancing the future of physics research
New application of AI just removed one of the biggest roadblocks in astrophysics
Using neural networks, Flatiron Institute research fellow Yin Li and his colleagues simulated vast, complex universes in a fraction of the time it takes with conventional methods
uGMRT reveals for the first time the patchy environment of a rare cosmic explosion
Scientists from the National Centre for radio Astrophysics of the Tata Institute of Fundamental Research (NCRA-TIFR) Pune used the upgraded Giant Metrewave Radio Telescope (uGMRT) to determine that AT 2018 cow, the first of a newly discovered class of cosmic…
Scientists warn: Humanity does not have effective tools to resist the tsunami
This threatens with sudden destruction of coastal cities and numerous human casualties
Dalian coherent light source reveals oxygen production from three-body photodissociation of water
The provenance of oxygen on Earth and other solar planetary bodies is a fundamental issue. It is widely accepted that the prebiotic pathway of oxygen production in the Earth primitive atmosphere was via vacuum ultraviolet (VUV) photodissociation of CO 2…
Science Snapshots From Berkeley Lab
Science Snapshots From Berkeley Lab – Water purification, infant-warming device, cuff-based heart disease monitor, ancient magnetic fields
New computer model helps brings the sun into the laboratory
Every day, the sun ejects large amounts of a hot particle soup known as plasma toward Earth where it can disrupt telecommunications satellites and damage electrical grids. Now, scientists have made a discovery that could lead to better predictions of this space weather.
New telescope at ESO’s La Silla joins effort to protect Earth from risky asteroids
Part of the world-wide effort to scan and identify near-Earth objects, the European Space Agency’s Test-Bed Telescope 2 (TBT2), a technology demonstrator hosted at ESO’s La Silla Observatory in Chile, has now started operating. Working alongside its northern-hemisphere partner telescope,…
Physicists net neutron star gold from measurement of lead
Nuclear physicists make new, high-precision measurement of the layer of neutrons that encompass the lead nucleus, revealing new information about neutron stars
Hubble celebrates 31st birthday with giant star on the edge of destruction
The giant star featured in this latest Hubble Space Telescope anniversary image is waging a tug-of-war between gravity and radiation to avoid self-destruction. The star, called AG Carinae, is surrounded by an expanding shell of gas and dust — a…
Rutgers Expert Available to Discuss Supernova Discovery
New Brunswick, N.J. (April 21, 2021) – Rutgers University–New Brunswick astrophysicist John P. (Jack) Hughes is available for interviews on a supernova (exploding star) discovery published today in the journal Nature. The discovery, made with NASA’s Chandra X-ray Observatory, features…
Record-breaking flare from Sun’s nearest neighbor
Discovery a ‘coup’ in astrophysics involving observations with nine instruments
On the pulse of pulsars and polar light
Reimagined telescopes may fill the void left by Arecibo’s collapse
Measuring neutron star squeezability
NICER collaboration, NASA astronaut reveal size of most massive neutron star, highlight Space Station science
Caught speeding: Clocking the fastest-spinning brown dwarfs
Gemini North observations help set rotational speed limit for brown dwarfs
More than 5,000 tons of extraterrestrial dust fall to Earth each year
Every year, our planet encounters dust from comets and asteroids. These interplanetary dust particles pass through our atmosphere and give rise to shooting stars. Some of them reach the ground in the form of micrometeorites. An international program conducted for…
Seeing quadruple
Machine-learning methods lead to discovery of rare “quadruply imaged quasars” that can help solve cosmological puzzles
New research shows that Mars did not dry up all at once
Mars had dry and wet eras and dried up for good 3 billion years ago
Alien raindrops surprisingly like rain on Earth
WASHINGTON–Raindrops on other planets and moons are close to the size of raindrops on Earth despite having different chemical compositions and falling through vastly different atmospheres, a new study finds. The results suggest raindrops falling from clouds are surprisingly similar…
Dark Energy Survey physicists open new window into dark energy
For the first time, DES scientists can combine measurements of the distribution of matter, galaxies, and galaxy clusters to advance our understanding of dark energy.