A team of astronomers has discovered that up to 60 percent of stars host strong magnetic fields, which can significantly alter the physical processes taking place in the core. The researchers used asteroseismology to detect these hidden fields and found that they are prevalent in intermediate mass stars.
Researchers have developed a new technique to accurately measure the surface gravity of distant stars, allowing for more precise analysis of exoplanet sizes and habitability. This breakthrough will play a crucial role in the study of planets beyond our Solar System.
Researchers identified the orbital partner parasitized by a blue straggler, a star that appears younger and brighter than expected. The study expands our understanding of binary star systems, bringing 25% of all stars into the fold of stellar evolution.
Astronomer Evan Kirby measures high concentration of dark matter in small dwarf galaxy Triangulum II, potentially making it a leading candidate for direct detection. The galaxy's unique characteristics and minimal background noise make it an ideal location to search for gamma-ray signals from colliding dark matter particles.
Researchers used microCT scanning to visualize brooding chambers and juveniles in live-bearing brittle stars. The 3D images provide an in situ view of developing young and the position of bursae inside adults, allowing for comparative morphological analyses.
A team from ASU and UNC aims to resolve uncertainties in the nuclear fusion process that creates elements forged by stars. They will investigate the range of elements produced by a star, including calcium and carbon, to determine their variation in output.
Researchers at Yale and Harvard have found a galaxy with a heartbeat, detecting the effects of pulsating older red stars on its light. The mean pulse of the stars in M87 is about one beat every 270 days.
Researchers have discovered thousands of stellar pulses in the galaxy Messier 87 (M87), providing a new method for calculating a galaxy's age. The pulsations are caused by bright, pulsating stars that were previously unknown to affect distant galaxies' light.
Astronomers have found nine ancient stars near the Milky Way's center, forming before the galaxy existed, with surprising purity and a possible hypernova origin.
Researchers identified ancient stars in the Milky Way's center with extremely low metal content, suggesting they formed in the early universe. These stars contain chemical fingerprints indicating possible hypernova deaths, which could aid understanding of the Universe's evolution over billions of years.
Astronomers have identified a type of gas found in galaxy voids that appears to fuel star formation under certain conditions. Researchers used radio telescopes to measure atomic gas levels in galaxies with gamma-ray bursts, finding large amounts of the gas near these events.
Astronomers use Hubble Space Telescope to uncover blueprints of Milky Way's early construction phase, revealing the history of stars that existed 12 billion years ago. The study suggests the galaxy's bulge formed first and its stellar inhabitants were born quickly, with the rest of the galaxy growing more slowly.
Astronomers suggest that large spiral patterns in circumstellar disks around young stars may indicate the presence of giant unseen planets. Computer simulations support this idea by showing how gas-and-dust disks evolve and how planets can modify disk structures, revealing their mass and position.
Astronomers at the University of Leeds used ALMA telescope to observe a massive star forming in a similar way to low-mass stars. The discovery suggests that massive stars may form in a disk-like structure, just like low-mass stars, and mirrors their formation process.
A team of astronomers has used data from the VVV survey to discover a previously unknown component of our home galaxy, the Milky Way. The new component is a thin disc of young stars across the galactic bulge, which was buried behind thick clouds of dust.
Researchers have developed a new method to probe the internal magnetic fields of red giant stars using asteroseismology. This technique involves analyzing variations in light emitted from a star as due to sound waves from its interior, revealing strong internal magnetic fields in these stars.
Researchers use asteroseismology to track waves through stars and determine internal properties, finding nearly a million times stronger magnetic fields than typical refrigerator magnets. This technique allows probing of previously hidden regions of stars.
Researchers used asteroseismology to probe magnetic fields in the cores of red giants, finding them strongly magnetized. The strong fields disrupt gravity waves, causing energy loss and affecting star evolution.
Researchers using ALMA telescope detected a burst of new stars in seven distant galaxies nine billion years ago. The galaxies' gas content was already depleted despite high rates of star formation, suggesting an increase in efficiency above the main sequence. This study pushes galaxies at z~1.6 well-above the star-forming main sequence.
Researchers tracked gene expression in healthy and sick sea stars, finding strong evidence of an immune response at the genetic level. The study provides new insights into how sea stars fight off the virus, with potential implications for understanding environmental conditions that contribute to disease.
Researchers propose a new technique to detect stars at galactic center by looking for radio waves from supersonic stars. Stars with high speeds can create shock waves, producing radio emission that can be detected.
Astronomers discovered large discs of dust around two young red dwarf stars near our solar system, hinting at potential new planetary systems forming. The discovery challenges current theories on planet formation and suggests a longer lifespan for such discs.
A PhD candidate at Queen's University has made a groundbreaking discovery of the first massive binary star with magnetic fields. The research provides new insights into the origin of magnetism in massive stars and may help explain why only 10% of these stars have strong magnetic fields.
Astronomers have found a similar percentage of newborn stars with specific masses in young clusters of the Andromeda galaxy compared to our own. This study, utilizing Hubble images and citizen scientist contributions, helps interpret distant galaxy light and understand star formation history.
Astronomers have developed a new technique to measure distances between stars with far greater precision than existing methods. By analyzing the spectra of identical 'stellar twins', researchers can determine the distance between two stars without relying on models, which are often inaccurate.
Seaweeds appear to protect coral from invasive sea stars by reducing predation and providing a physical barrier. This complex relationship highlights the intricate dynamics of ecosystems and has implications for coral reef conservation.
A new study suggests that rogue supernovas that explode in deep space were likely kicked out of their galaxies at high speeds and then ejected into space by the gravitational pull of a binary black hole. The study, published in Monthly Notices of the Royal Astronomical Society, used data from NASA's Hubble Space Telescope to trace 13 h...
Scientists use archived data from NASA's Hubble Space Telescope to study 13 unusual exploding stars, known as supernovae. These young stars were ejected from their galaxies at high speeds, and astronomers believe that supermassive black holes in merging galaxies played a key role in their ejection.
Researchers at the University of York have revealed a new understanding of nucleosynthesis in stars, providing insight into massive star evolution and the origins of the Solar System. By studying radioactive aluminium production, scientists can now better understand gamma radiation maps of the galaxy and simulate star behavior.
Researchers have detected lithium in material ejected by a nova, resolving a long-standing puzzle about its abundance in young stars. The finding sheds light on the chemical evolution of the Milky Way and could inform models of the Big Bang.
A team of astronomers led by Gregg Hallinan has discovered that brown dwarfs, which are cool and dim objects, host powerful auroras near their magnetic poles. The findings suggest that these so-called failed stars behave more like giant planets with highly active magnetic fields.
Astronomers have discovered a powerful aurora on a brown dwarf, 10,000 times more powerful than any seen before. The discovery reveals a major difference in magnetic activity between low-mass stars and planets.
Researchers discovered that brown dwarf stars, which are difficult to detect and classify, host powerful auroras similar to Earth's display. The study used radio and optical telescopes to observe a brown dwarf 20 light years away, providing evidence that these stars act like supersized planets.
A University of Texas at Arlington study reveals that sea stars have an immune response characterized by various types of immunities, including the first melanin gene ever recorded in a sea star. The team also found changes in genes related to collagen and nervous system function, which may contribute to the disease's effects.
Astronomers discovered jets of material ejected by still-forming young brown dwarfs, confirming they form through a scaled-down version of star formation. The presence of these jets was detected by the VLA and confirmed with Spitzer and Herschel space telescopes.
Researchers at Michigan State University have developed a new 3-D model of a giant star's last moments, which could help explain how these stars explode. The model addresses previous limitations, including the shape of the star and the lack of fuel source, paving the way for a deeper understanding of supernova mechanisms.
A study of over 20,000 merging galaxies found that when two galaxies collide, the larger one can stop the smaller one from forming new stars. However, when two galaxies of similar mass collide, they both increase their stellar birth rate.
A new study has precisely measured the ages of 33 Kepler stars with solar-like oscillations, revealing that even stars older than 11 billion years have Earth-like planets. The research uses asteroseismology to analyze tiny variations in starlight and provides a large sample for studying galactic archeology.
Astronomers have solved a mystery over blue hook stars, which form when a star's outer layers are destroyed by rapid rotation. The international team found that these stars consume hydrogen fuel more slowly due to their high spin rates.
A team of astronomers using the European Southern Observatory's Very Large Telescope discovered the brightest galaxy yet found in the early universe. The galaxy, CR7, contains massive blue stars - the first generation of stars that forged the heavy elements necessary for life.
A team of astronomers has discovered a massive star cluster in the NGC 5253 dwarf galaxy, containing over 7,000 massive O-type stars. The cluster, dubbed Cloud D, is incredibly efficient at forming stars and creating dust, with a gas cloud rate that is ten times greater than in our own Milky Way.
Astronomers confirm three supernovae existed in the dark emptiness of intergalactic space, far from their home galaxies. This discovery provides crucial insight into the formation and evolution of galaxy clusters.
A Queen's University PhD student is conducting the first systematic population study of magnetosphere-host stars, finding that plasma density within all such magnetospheres is far lower than predicted. This suggests that plasma might be escaping gradually, maintaining magnetospheres in an essentially steady state.
A study published in Nature found that galaxies are being strangled to death due to a lack of raw materials needed to form new stars. The team analyzed metal levels in over 26,000 galaxies and found that dead galaxies have higher metal content than alive ones.
Astronomers observed 22 massive elliptical galaxies using the VLT and Hubble Space Telescope, revealing that star formation in their centers stopped around three billion years ago. The newly discovered inside-out nature of this shutdown may be due to a galaxy's central supermassive black hole or lack of fresh gas.
Researchers found two ancient stars in Sculptor dwarf galaxy with unusual chemical content, suggesting a single supernova explosion may have seeded the gas cloud. This discovery provides an unprecedented view of the earliest history of another galaxy.
A team of researchers, including Dr. John Pasley, discovered that plasma flowing around stars could create a series of pressure pulses generating sound waves. The frequency was too high for any mammal to hear, making it impossible for humans to detect.
Researchers used the Titius-Bode law to calculate planetary positions and found billions of stars with 1-3 planets in their habitable zone. This suggests that a significant number of these planets could have liquid water and support life.
An international team of astronomers has discovered a hot, dusty cloud of molecular gases in a dwarf galaxy near our own, where over 1 million young stars are forming. The star cluster is buried within a supernebula and contains massive 'O' stars that are a million times brighter than the sun.
A new survey of Carina Nebula helps astronomers understand the processes that may have contributed to the formation of our sun. The region contains dozens of examples of forming stars at various stages of development, providing insights into how solar-type stars evolve.
A team of astronomers has found that galactic 'rain' may be the key to understanding why some galaxies are more productive at creating stars than others. The researchers analyzed X-rays from over 200 galaxy clusters using NASA's Chandra X-ray Observatory and discovered that massive black holes can slow down gas that helps form stars.
Researchers at MIT and Michigan State University have developed a theory explaining how galaxy clusters regulate star formation. The study found that hot intracluster gas cools rapidly, condenses, and collapses to form new stars, but also triggers conduction and precipitation-driven feedback, which prevent excessive star birth.
International team of astronomers observes multiple-star system forming in Perseus constellation, revealing how stars are separated during early stages of formation. The discovery advances understanding of conditions governing the type of star systems to develop.
Scientists have observed a multiple-star system in its early stages of formation, with three dense condensations that will collapse into stars in just 40,000 years. The system is expected to form a stable triple-star system, with the fourth star potentially leaving the system soon.
A team of astronomers has discovered the most massive pair of white dwarf stars yet found, which will merge in the future to form a runaway thermonuclear explosion leading to a Type Ia supernova. This discovery provides new insights into astronomical distances and dark energy, shedding light on the expansion of the Universe.
Astronomers validate earlier prediction of dark-matter dominated dwarf galaxy's location by discovering young Cepheid variables in the Norma constellation. The discovery sheds light on the nature of dark matter and confirms Newton's theory of gravity.
A study of Andromeda's stellar disk reveals a more disordered population than the Milky Way's, suggesting recent mergers with smaller galaxies. The researchers found that younger stars have relatively ordered rotational motion, while older stars display much more disordered motion.
Researchers tracked the motion of a binary pulsar to measure the space-time warp caused by its two highly compact stars. The study provided new information on the effects of extreme gravity on neutron stars and binary systems.
Researchers have developed a method to calculate the ages of individual stars by measuring their spin periods and masses. The technique, known as gyrochronology, uses mathematical relationships between mass, rotation rate, and age to determine stellar ages with precision.
The Hubble Space Telescope has captured the sharpest large composite image of the Andromeda galaxy, revealing over 100 million stars in a 61,000-light-year-long stretch. This panoramic view provides unprecedented insights into the galaxy's structure and evolution.