Researchers found that strong magnetic fields can increase the mass limit of white dwarfs, potentially allowing them to grow beyond the Chandrasekhar limit. This effect can also explain observed higher radii of some white dwarfs, and may have implications for Type Ia supernovae.
Astronomers have discovered a second-generation planet candidate orbiting a white dwarf, formed from the remains of a dead star. The planet is believed to have formed from the expelled material of the white dwarf's star, creating a unique chemical signature.
Astronomers have discovered a star slowly consuming a brown dwarf, 300 light years away, in a system that challenges the traditional view of stellar cannibalism. The slow stellar cannibalism could carry on for hundreds of thousands, or even billions of years, offering an alternative to the star swallowing its companion.
Researchers identified 3,775 proteins in red blood cells and mapped thousands of physical interactions, revealing a dynamic network that adapts quickly to low-oxygen conditions. The study provides new insight into how red blood cells respond to high-altitude exposure and strenuous exercise, as well as pathological hypoxia.
Researchers developed a graph-based pan-genome for cultivated peanut and used it to breed a higher-yielding dwarf peanut line. The resulting line, LuAi-1, is roughly half the height of the parent variety but yielded around 20% more in field trials.
Researchers at Lund University have identified a mechanism by which heme, released from damaged red blood cells, activates an inflammatory response. The kallikrein-kinin system pathway was found to be involved, leading to increased permeability and fluid leakage in surrounding tissues.
Researchers propose a new theory explaining why humans perceive colors as combinations of red, yellow, green, and blue. They suggest that our brain simplifies the natural world's color palette to encode the range of colors, capturing the idea of opponency in color vision.
A team of astronomers has discovered an extremely bright and red spot in the early universe, which they believe is a mashup of a black hole and a star. The object, dubbed a 'black hole star,' would help solve the mystery of other mysterious 'little red dots' found in deep-space images.
Researchers identified and cloned a new semi-dwarfing gene, Sdd1, which modulates plant height and spike architecture through a distinct hormonal balancing mechanism. The study found that Sdd1 integrates multiple hormone signals in a complex manner, offering breeders a fresh genetic resource to fine-tune wheat architecture.
The discovery of an exomoon in the CD-35 2722 system, orbiting a brown dwarf rather than a planet, challenges our understanding of planetary objects. The exosatellite is estimated to be at least as massive as Jupiter and orbits a highly massive companion, blurring the lines between stars, planets, and moons.
Astronomers discovered high-speed 'bullets' of oxygen-rich gas shooting out of the only known helium nova in Milky Way, confirming binary system responsible for rare stellar explosion. The discovery provides unprecedented opportunity to study one of universe's rarest types of stellar explosions.
A new theory proposes that Little Red Dots are early forms of globular clusters. These mysterious objects, detected by JWST in 2022, shine with distinctive red and ultraviolet light. The study suggests a connection between their formation and the creation of supermassive stars at the centers of globular clusters.
Researchers at Osaka Metropolitan University successfully generated red blood cell-like cells from canine induced pluripotent stem cells (iPSCs), marking a significant step towards artificial cell production for blood bank reserves. The study used CRISPR-Cas9 genome editing to target glycophorin A, allowing the team to visualize and tr...
Researchers directly observed four white dwarf stars orbiting double star systems in our cosmic backyard. The new results revealed that each system had a red dwarf companion, which was hiding the white dwarf's light. This discovery allows researchers to update the local white dwarf census within 20 parsecs of Earth.
A new study reveals that brief warm temperatures disrupt the internal bacterial ecosystem of dwarf spiders, leading to a sudden comeback of male offspring. The research found that thermal stress triggers a transgenerational shift in microbial dynamics, with a rival bacterium blocking the feminizing bacteria and allowing males to thrive.
A team of astronomers used the James Webb Space Telescope to study the exoplanet WD 1856 b and its unusual orbit around a white dwarf. The research found that the planet is significantly warmer than expected, with a temperature of about 400 Kelvins, indicating it must have been heated in the past.
Dwarf mongooses alter their behavior in areas where fights with rivals are most likely, even without another group present. The study shows that the biggest changes occur when the anticipated threat is greatest, allowing them to tailor their pre-emptive behavior accordingly.
The Cozumel dwarf fox, a critically endangered species, has been rediscovered after two decades. The fox was rescued and released into the Laguna Colombia State Reserve, highlighting the need for urgent conservation measures to preserve its habitats.
Astronomers at UNC-Chapel Hill played a key role in identifying the source of mysterious long-period radio transients. The discovery of ASKAP J1745–5051, a binary star system containing a white dwarf and red dwarf companion, provides strong evidence for the origin of these unusual bursts of radio waves.
A team of astronomers has identified a rare stellar system that provides a unique natural laboratory to study extreme physics. The system, called ASKAP J1745−5051, consists of a white dwarf and a red dwarf star, producing powerful bursts of radio waves and X-rays.
Astronomers have found strong evidence that young red dwarf stars can swallow their own nearby planets. The study, published in Monthly Notices of the Astronomical Society, suggests that six different red dwarfs had engulfed Earth-like rocky planets, providing a fresh burst of lithium to their atmospheres.
A new study uses unprecedented simulations to reveal how ultra-faint dwarf galaxies reflect the conditions of the early Universe. These tiny satellite galaxies can provide clues about the properties of dark matter and help test early-Universe physics with upcoming observations.
Ultra-faint dwarf galaxies, tiny satellite galaxies of the Milky Way, can reflect conditions of the early universe, shedding light on galaxy formation and dark matter. Simulations suggest these small galaxies are sensitive to early radiation environment and can probe the universe's earliest climate.
New research has found that immature red blood cells can import heme from surrounding cells, overcoming long-standing assumptions about heme and red blood cells. This discovery could lead to new therapeutic approaches for inherited genetic blood disorders such as β-thalassemia.
An international team maps the climate of rocky exoplanets like TRAPPIST-1b and c for the first time, ruling out dense atmospheres due to extreme temperatures. The study uses James Webb Space Telescope observations to determine surface temperatures on both day and night sides.
Researchers at Osaka Metropolitan University discovered that dragonfly visual protein detects red light similarly to mammals. This finding has potential applications in medical fields relying on red light-sensing, such as optogenetics.
Research finds that building gypsum powder reduces soil strength when exposed to water, but augments it at low concentrations of sodium sulfate. The study also reveals the impact of dry-wet cycles on soil pores, structure, and resistance.
Astronomers have solved a 50-year-old mystery surrounding the star gamma-Cas, revealing that its unusual high-energy X-rays are linked to the orbital motion of an invisible white dwarf companion. This breakthrough was made possible by unique high-resolution observations from the European Space Agency's XRISM mission.
Astronomers from the University of Liège have solved a 50-year-old stellar mystery by attributing the X-rays emitted by Gamma Cas to a magnetic white dwarf orbiting the star. The study used high-energy astrophysics instrumentation and revealed that the X-rays are associated with the compact companion, not the massive Be star itself.
Astronomers have discovered a rare second-generation star, PicII-503, in the ultra-faint dwarf galaxy Pictor II, which preserves the chemical imprint of the first stars in the Universe. The star has an extreme overabundance of carbon and the lowest iron abundance ever measured outside of the Milky Way.
Researchers discovered a freshwater alga that captures far-red light for photosynthesis by rearranging ordinary chlorophyll. This unique strategy allows the alga to thrive in shaded forests and murky waters, making it resilient in tough environments. The findings have practical implications for sustainable bioenergy production and may ...
The American Heart Association urges everyone to take action to support women's heart health in four ways: know your numbers, join Research Goes Red, and celebrate survivors. The organization aims to raise awareness of cardiovascular disease in women, which is the leading cause of death in women, claiming 1 in 3 lives.
A study found that ultra-endurance running damages red blood cells, reducing their ability to carry oxygen and nutrients. The damage accelerates the aging and breakdown of these cells, with longer races leading to greater damage.
A high-energy cosmic event detected by the China-led Einstein Probe space telescope may mark the moment when an intermediate-mass black hole tears apart and consumes a white dwarf star, according to astrophysicists from The University of Hong Kong. The team provided crucial theoretical judgement that led to the focus on this model.
A new study proposes a two-component self-interacting dark matter model that naturally reproduces observational results for dwarf galaxies and strong gravitational lensing. The model predicts mass segregation, where heavier particles sink towards galaxy centers and lighter particles diffuse outward.
Researchers believe a gigantic ring system surrounding a brown dwarf or super-Jupiter could have blocked the star's light, causing an extremely rare fading star phenomenon. The dimming lasted nearly 200 days, making it one of the longest ever observed.
Researchers from the University of Copenhagen have explained the mysterious 'red dots' seen in James Webb Space Telescope images as young black holes. The discovery provides insight into how the universe's first black holes were born and sheds light on their early development.
A six-year study found dwarf birch trees in blanket bogs survived with higher rates of growth and survival at lower deer densities. The study suggests that lowering deer densities can help restore lost mountain woodlands in the Scottish Highlands.
A new study from Karolinska Institutet reveals that long-term type 2 diabetes can cause red blood cells to become directly harmful to blood vessels. The researchers found that microRNA-210 plays a crucial role in this process, and its levels in red blood cells may serve as a biomarker for early detection of cardiovascular complications.
Astronomers have created a naturally occurring space weather station around complex periodic variable M dwarf stars to study the environment of planets. This discovery sheds new light on how stars affect their planets' makeup and might provide clues about the habitability of distant worlds.
The Subaru Telescope's OASIS program has discovered a massive planet and a brown dwarf orbiting distant stars. These discoveries enable the upcoming Roman Space Telescope to test critical technologies for imaging Earth-like planets.
Researchers used NASA's IXPE telescope to study the innermost region of an intermediate polar, revealing a surprisingly high degree of X-ray polarization and an unexpected direction of polarization. The team found that X-rays were emitted from a column of white-hot material pulled in by the white dwarf's strong magnetic field.
A brown dwarf companion, J1446B, has been found orbiting a nearby M dwarf star, LSPM J1446+4633. The discovery uses a synergy of ground- and space-based observatories, including Subaru's IRD instrument and the Gaia mission, to determine the dynamical mass and orbital parameters of the brown dwarf with unprecedented accuracy.
Astronomers detected phosphine in the atmosphere of a cool, ancient brown dwarf named Wolf 1130C using the James Webb Space Telescope. The discovery challenges previous theories and suggests that phosphorus chemistry might be more complex than initially thought.
Astronomers have detected phosphine (PH3) in the atmosphere of low-temperature brown dwarf Wolf 1130C using James Webb Space Telescope. The abundance is comparable to that of Jupiter and Saturn, with a value of 0.100 parts per million.
The Red Sea experienced a massive disruption 6.2 million years ago, completely changing its marine life and transforming into a barren salt desert. The catastrophic flood from the Indian Ocean rapidly refilled the basin, restoring normal marine conditions within less than 100,000 years.
A University of Helsinki study found that consuming more legumes and less red and processed meat can significantly reduce total and LDL cholesterol levels in men, leading to weight loss. The study also showed improved dietary iron intake and no negative impact on vitamin B12 or iodine levels.
Astronomers detected water ice and nitrogen in fragments torn apart from a Kuiper Belt analog, revealing the presence of volatile-rich material. The discovery sheds light on planet formation and the delivery of water to rocky planets.
Astronomers have discovered a frozen, water-rich planetary fragment being consumed by a white dwarf star outside our Solar System. The object is thought to be an icy planetesimal, possibly similar to Halley's Comet or Pluto, and has a high nitrogen abundance, making it a rare finding in the field.
A recent study by Leibniz Institute for Food Systems Biology at the Technical University of Munich shows that extremely dwarf wheat has a less favorable gluten composition than semi-dwarf or tall wild-type wheat. This can lead to poorer baking properties. Environmental conditions also play a significant role in shaping gluten composition.
Astronomers discovered a greedy white dwarf star consuming its closest celestial companion at an unprecedented rate. The study found that the super-dense white dwarf is burning brightly due to the mass transfer between the two stars, potentially leading to a massive explosion visible from Earth.
Astronomers used Gemini South and James Webb Space Telescope to detect silane in ancient brown dwarf's atmosphere, revealing how primordial formation impacts planet atmospheres. The discovery confirms understanding of gas giant cloud formation and offers insight into the composition of distant worlds.
A new study by Bournemouth University confirms that red squirrel populations across Europe are resilient to the effects of climate change, but highlights the need for conservation efforts to protect their habitat. The study found that temperature changes and low rainfall do not directly affect the survivability of red squirrels.
Dwarf Channel Island foxes (Urocyon littoralis) have larger brains than their mainland gray fox counterparts, contradicting the notion of island-specific evolutionary pressures leading to reduced brain size. This finding suggests little evidence of domestication in these isolated California islands.
Astronomers have identified an extremely rare hierarchical quadruple star system consisting of a pair of cold brown dwarfs orbiting two young red dwarf stars. The discovery provides a unique cosmic laboratory for studying these mysterious objects, which are too big to be considered planets but also lack the mass to be full-fledged stars.
A team of astrophysicists from the University of Bonn and Iran has reclassified Ursa Major III as a compact star cluster containing a black hole core. Simulations suggest that the object's high mass-to-light ratio can be explained by the presence of dark stars rather than dark matter.
Researchers studied similar spiral galaxies and found they 'dance' with closely located dwarf satellites, potentially revealing the formation and evolution of our galaxy's satellite system. The study aims to refine models of galaxy evolution and cosmic structure, offering new insights into our understanding of the universe.
Researchers have discovered a rare white dwarf remnant with a carbon signature, suggesting it formed from the merger of two stars. The high-mass white dwarf, WD 0525+526, has a thin atmosphere that allows carbon to reach its surface, providing insights into the early stages of stellar evolution.
A new study by Dartmouth astronomers has mapped 355 candidate satellite galaxies around dwarf galaxies, tripling the number previously surveyed. The researchers aim to understand how external conditions influence satellite formation and uncover insights into dark matter's nature.
A team from the Hebrew University of Jerusalem has developed a low-cost, non-invasive method to estimate total leaf area in dwarf tomato plants. The study applies structure-from-motion techniques and machine learning to predict plant growth with remarkable accuracy, making precision agriculture more accessible.