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UrduAccording to the latest cosmological models, large spiral galaxies such as the Milky Way grew by absorbing smaller galaxies, by a sort of galactic cannibalism. Evidence for this is given by very large structures, the tidal stellar streams, which are…
Tag: STARS/THE SUN
New method predicts ‘stealth’ solar storms before they wreak geomagnetic havoc on Earth
For the first time, stealth coronal mass ejections can be detected before they wreak havoc on Earth without the need for dedicated spacecraft
Long-period oscillations of the Sun discovered
Ten years of data from NASA’s Solar Dynamics Observatory combined with numerical models reveal the deep low musical notes of the Sun.
From the Sun to the stars
A journey of exoplanet discovery begins as Penn State’s NEID spectrometer starts its scientific mission
Cosmic rays help supernovae explosions pack a bigger punch
The final stage of cataclysmic explosions of dying massive stars, called supernovae, could pack an up to six times bigger punch on the surrounding interstellar gas with the help of cosmic rays, according to a new study led by researchers…
New sunspot catalogue to improve space weather predictions
Scientists from the University of Graz, Kanzelhöhe Observatory, Skoltech, and the World Data Center SILSO at the Royal Observatory of Belgium, have presented the Catalogue of Hemispheric Sunspot Numbers. It will enable more accurate predictions of the solar cycle and…
RAS launches new multi-disciplinary journal
The Royal Astronomical Society (RAS) is pleased to announce the launch of its first new journal in almost 100 years. Tentatively titled RAS Techniques and Instruments , it will cover topics in astronomy and geophysics ranging from instrumentation, data science,…
National Astronomy Meeting 2021: Media invitation
Around 850 astronomers and space scientists will gather online from 19 – 23 July, for the Royal Astronomical Society National Astronomy Meeting 2021 (NAM 2021) hosted by the University of Bath. Postponed in 2020 due to the Covid-19 pandemic, the…
Physicists describe sun’s electric field
As the Parker Solar Probe ventures closer to the sun, we are learning new things about our home star. In a new study, physicists led by the University of Iowa report the first definitive measurements of the sun’s electric field,…
Solar radio signals could be used to monitor melting ice sheets
The sun provides a daunting source of electromagnetic disarray – chaotic, random energy emitted by the massive ball of gas arrives to Earth in a wide spectrum of radio frequencies. But in that randomness, Stanford researchers have discovered the makings…
A star in a distant galaxy blew up in a powerful explosion, solving an astronomical mystery
Giant explosion in space illuminates thousand-year mystery
Galactic gamma ray bursts predicted last year show up right on schedule
Sherlock Holmes story gives clue to successful prediction of bursts from nearby magnetar
New type of massive explosion explains mystery star
‘Magneto-rotational hypernova’ soon after the Big Bang fuelled high levels of uranium, zinc in ancient stellar oddity
SwRI-led team addresses mystery of heavy elements in galactic cosmic rays
MMS data reveal a mechanism for accelerating heavy ions
Satellite galaxies can carry on forming stars when they pass close to their parent galaxies
Historically most scientists thought that once a satellite galaxy has passed close by its higher mass parent galaxy its star formation would stop because the larger galaxy would remove the gas from it, leaving it shorn of the material it…
Closing the gap on the missing lithium
Researchers account for some of the lithium missing from our universe
Space scientists solve a decades-long gamma-ray burst puzzle
An international team of scientists, led by astrophysicists from the University of Bath in the UK, has measured the magnetic field in a far-off Gamma-Ray Burst, confirming for the first time a decades-long theoretical prediction – that the magnetic field in these blast waves becomes scrambled after the ejected material crashes into, and shocks, the surrounding medium.
Space scientists solve a decades-long gamma-ray burst puzzle
Astrophysicists from the University of Bath in the UK find the magnetic field in gamma-ray bursts is scrambled after the ejected material crashes into, and shocks, the surrounding medium
Mystery of Betelgeuse’s dip in brightness solved
When Betelgeuse, a bright orange star in the constellation of Orion, became visibly darker in late 2019 and early 2020, the astronomy community was puzzled. A team of astronomers have now published new images of the star’s surface, taken using…
Mystery solved: Dust cloud led to Betelgeuse’s ‘Great Dimming’
The star Betelgeuse became visibly darker in 2019 and 2020, puzzling astronomers; new images show that the star was partially concealed by a cloud of dust, solving the mystery of the ‘Great Dimming’ of Betelgeuse
The give and take of mega-flares from stars
The long relationships between stars and the planets around them – including the Sun and the Earth – may be even more complex than previously thought. This is one conclusion of a new study involving thousands of stars using NASA’s…
How a supermassive black hole originates
UC Riverside-led study points to a seed black hole produced by a dark matter halo collapse
Cosmic rays: Coronal mass ejections and cosmic ray observations at Syowa Station in the Antarctic
Solar activities, such as CME(Coronal Mass Ejection), cause geomagnetic storm that is a temporary disturbance of the Earth’s magnetosphere. Geomagnetic storms can affect GPS positioning, radio communication, and power transmission system. Solar explosions also emit radiation, which can affect satellite…
Dark matter is slowing the spin of the Milky Way’s galactic bar
The spin of the Milky Way’s galactic bar, which is made up of billions of clustered stars, has slowed by about a quarter since its formation, according to a new study by researchers at University College London and the University of Oxford
Astronomers spot a ‘blinking giant’ near the centre of the Galaxy
Astronomers have spotted a giant ‘blinking’ star towards the centre of the Milky Way, more than 25,000 light years away. An international team of astronomers observed the star, VVV-WIT-08, decreasing in brightness by a factor of 30, so that it…
Star’s death will play a mean pinball with rhythmic planets
Four planets locked in a perfect rhythm around a nearby star are destined to be pinballed around their solar system when their sun eventually dies, according to a study led by the University of Warwick that peers into its future
Queqiao: The bridge between Earth and the far side of the moon
Researchers explain the design of the relay communication satellite that enabled us to peek at the hidden face of the moon
Cosmic cartographers map nearby Universe revealing the diversity of star-forming galaxies
Study reveals that the makeup and life cycle of star-forming clouds is dependent on location
An unprecedented survey of the ‘nurseries’ where stars are born
Study of nearby galaxies gives new insights into star formation
Organic molecules reveal clues about dying stars and outskirts of Milky Way
Researchers from the University of Arizona will present findings from radio-astronomical observations of organic molecules at the 238th Meeting of the American Astronomical Society, or AAS, during a press conference titled “Molecules in Strange Places” at the 238th AAS Meeting…
Stream of stars extends thousands of light-years across the Milky Way
It’s hard to see more than a handful of stars from Princeton University, because the lights from New York City, Princeton and Philadelphia prevent our sky from ever getting pitch black, but stargazers who get into more rural areas can…
Holes in the solar atmosphere: Artificial intelligence spots coronal holes to automate space weather
Scientists from the University of Graz (Austria), Skoltech and their colleagues from the US and Germany have developed a new neural network that can reliably detect coronal holes from space-based observations. This application paves the way for more reliable space…
Jets from massive protostars might be very different from lower-mass systems
VLA reveals new details of protostellar jet
Front-row view reveals exceptional cosmic explosion
Observation challenges established theory of gamma-ray bursts in the universe
Which way does the solar wind blow?
Using supercomputers, researchers develop new software for improved space weather prediction
Astronomers discover a massive star cluster, of intermediate age, in the constellation Scutum
An international team of astrophysicists led by the Stellar Astrophysics Group of the University of Alicante (UA), the Instituto de Astrofísica de Canarias (IAC), and the University of Valparaíso (Chile) has discovered a massive cluster of stars of intermediate age…
Study reveals diverse magnetic fields in solar-type star-forming cores
Magnetic fields are ubiquitous throughout our Milky Way Galaxy and play a crucial role in all dynamics of interstellar medium. However, questions like how Solar-type stars form out of magnetized molecular clouds, whether the role of magnetic fields changes at…
Turbulence in interstellar gas clouds reveals multi-fractal structures
In interstellar dust clouds, turbulence must first dissipate before a star can form through gravity. A German-French research team has now discovered that the kinetic energy of the turbulence comes to rest in a space that is very small on…
How space weather affects energy infrastructure
UTA researcher aims to mitigate solar flare effects on electrical grids
Dark energy survey releases most precise look at the universe’s evolution
First three years of survey data uses observations of 226 million galaxies over 1/8 of the sky
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…
36 dwarf galaxies had simultaneous ‘baby boom’ of new stars
Surprising finding challenges current theories on how galaxies grow
Moon mission delays could increase risks from solar storms
First study of timing of extreme space weather events reveals clear pattern
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…
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…
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…
UBCO researcher uses geology to help astronomers find habitable planets
Findings will help better identify Earth-like planets that could sustain life
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
New look at a bright stellar nursery
VLA observations reveal changes over time
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…