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.
A new study published in PLOS Pathogens reveals that malaria parasites growing in different host cells can develop resistance to antimalarial drugs. Researchers found that the metabolic state of red blood cells provides a unique environment for Plasmodium parasites, allowing them to scavenge essential resources and evade drug targeting.
A team of astronomers witnessed a supernova smashing into a nearby star, creating an ultraviolet glow that reveals the size of the companion. The study provides new insights into the origin of type Ia supernovae.
New research from the Palomar Transient Factory team provides evidence supporting the single degenerate channel theory for type Ia supernovae. The strong UV pulse detected in iPTF14atg indicates a collision between material ejected from the supernova and its companion star.
A team of Caltech astronomers detected a Type Ia supernova in nearby galaxy IC831, providing evidence for the single-degenerate model. The data suggest that the white dwarf's powerful gravity pulls material from the companion star, leading to a runaway nuclear reaction.
A study by Durham University found that men wearing red are perceived as more aggressive and dominant than those in blue or grey. The results suggest that the colour red is a warning signal in nature and may influence social perceptions of dominance and aggression.
New England's spring and summer red tides will be similar in extent to those of the past three years, according to the 2015 Gulf of Maine red tide seasonal forecast. The forecast is part of a larger NOAA effort to deliver ecological forecasts that support human health and well-being.
Researchers at Harvard T.H. Chan School of Public Health have identified a critical host factor, CD55, that enables the malaria parasite to invade human red blood cells. The discovery opens up new avenues for developing therapies to treat and prevent malaria.
A new species of extinct pigmy sperm whale has been discovered in Panama, providing fresh evidence on the evolution of these whales and their distinctive spermaceti organ. The finding fills a key geographic gap in the group's ancient distribution and offers insights into the complex history of sound emission and echolocation.
Researchers developed a model of a malaria-infected red blood cell to understand the mechanism behind stiffening and stickiness. The model found that protein nodules called knobs contribute to stiffness, suggesting a promising approach to treat the disease by softening the cells.
Researchers found that a reduced red blood cell clearance rate is associated with increased risk of serious diseases like cancer and cardiovascular disease. This biomarker could improve disease diagnosis and prognosis by identifying early warning signs in healthy individuals.
Astronomers have determined the pre-explosion mass of a white dwarf star that blew up thousands of years ago using archival data from the Japan-led Suzaku X-ray satellite. The study suggests that only a single white dwarf was involved in the explosion, contradicting a well-established alternative scenario.
Dwarf lemurs' ability to put their bodies in standby mode, known as torpor, correlates with increased longevity. Hibernating lemurs live up to ten years longer than non-hibernators, staying healthier and reproducing for a longer period.
A study found that different colored lettuces have varying antioxidant effects, with red leaves acting faster than green ones. Researchers aim to boost these properties through short stresses.
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.
Researchers identify plumbonacrite as intermediate in degradation of red lead, leading to bleaching of the color over time. The discovery sheds new insights into the bleaching process of red lead, revealing a possible reaction pathway involving light and carbon dioxide.
Scientists have identified the fastest-moving unbound star in our galaxy, breaking the galactic speed record with a speed of 1,200 kilometers per second. The star, US708, was once part of a double-star solar system and is now expected to leave the Milky Way.
Researchers have found a set of celestial objects that resemble dwarf satellite galaxies orbiting the Milky Way. These discoveries could provide insights into dark matter and its role in galaxy formation.
A team of astronomers from University of Cambridge identified nine new dwarf satellites orbiting Milky Way, largest number ever discovered. The findings may help unravel mysteries behind dark matter, invisible substance holding galaxies together.
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 new study reviews fossils from the Weng'an biota, revealing evidence of cellular, tissue, and reproductive differentiation in ancient red algae and animal embryos. The findings support the evolutionary transition into complex multicellularity and shed light on the early evolution of eukaryotic multicellularity.
Researchers have found a new species of Osedax bone worms with females containing harems of tiny dwarf males. The largest male is tens of thousands times larger than its relatives and has evolved to consume bones on its own.
Researchers from Spain and India found that pulsars with black holes are ideal for testing general relativity, but two cases reduce their value. The 'holy grail' pair is a normal black hole, which has yet to be discovered.
Dwarf mongooses show real-time behavioral plasticity in response to threat indicators, altering their behavior based on environmental conditions and social signals. This flexible decision-making allows them to optimize foraging time versus vigilance, ensuring survival in a vulnerable predator-rich environment.
Researchers found 12 diverse sources of nutrients that fuel Florida red tides, including undersea sediments, decaying fish, and atmospheric deposits. The study's findings suggest a complex interplay between natural and human-contributed nutrient sources, highlighting the need for further research to mitigate the impacts of red tide blo...
Researchers found that knocking out a single enzyme is responsible for changing blue penstemon flowers to red. The study reveals a predictable genetic change behind the evolution from blue to red, with reverse changes unlikely.
Astronomers observed unprecedented nova images that show the expanding thermonuclear fireball is more complicated than predicted. The research collaboration measured the nova on 27 nights over two months using CHARA's high-resolution telescopes, revealing an ellipticity of 13% and a rapid expansion rate of over 600 km/s.
New research shows that female rhesus monkeys exhibit a bias toward images of the opposite sex when surrounded by red frames, mirroring human responses. This finding suggests an evolved biological mechanism underlying the 'red effect', which may not be unique to humans.
Astronomers discovered that nearby dwarf spheroidal galaxies lack star-forming gas, while those beyond a certain distance have abundant hydrogen. The Milky Way's gravity affects the composition of its smallest neighbors, shutting down star formation.
Researchers quantify physical changes in red blood cells as they mature, finding that surface area loss is the primary factor, despite initial thought to be vesicle shedding. The study's findings could aid in early detection of clinical conditions with altered maturation patterns.
Researchers mapped red fox ancestry across 1,000 individuals worldwide, revealing the species evolved into a new distinct species in North America after 400,000 years. The study suggests climate change and environmental shifts impacted global distribution.
The NASA Swift satellite detected a series of powerful stellar flares from the nearby red dwarf star DG CVn, with temperatures reaching 360 million degrees Fahrenheit. The flares were triggered by rapid spin and amplifying magnetic fields, making them one of the longest-lasting events ever recorded.
Guillardia theta's unique phycobiliproteins have distinct biosynthesis and assembly processes compared to cyanobacteria and red algae. Researchers gained insight into the complex transport mechanism of these pigments using docking enzyme GtCPES.
Astronomers used Hubble and ground observations to find the M60-UCD1 dwarf galaxy containing a massive black hole. The discovery suggests compact galaxies may be remnants of larger galaxies torn apart during collisions.
Researchers found a tiny galaxy, M60-UCD1, hosting a supermassive black hole with a mass of 21 million suns. The discovery suggests many ultracompact dwarf galaxies may contain huge black holes. The team used Gemini North and Hubble Space Telescope observations to estimate the black hole's mass.
Scientists discovered a new subgroup of cyanobacteria that can absorb and use far-red light for photosynthesis, replacing 17 proteins in three major complexes. This process has a dramatic effect on the organism's physiology and metabolism, producing 40% more oxygen.
Researchers used laser optical tweezers to study interactions between malaria parasites and red blood cells, revealing new insights into the disease process. The study found that attachment is mediated by multiple weak interactions, which could potentially be blocked by a combination of drugs or antibodies.
Researchers at the University of Warwick found that white dwarf stars crashing into neutron stars could be responsible for the loneliest supernovae. The team used observations from the Very Large Telescope and Hubble Space Telescope to rule out other explanations, such as binary systems or massive stars.
Astronomers discovered a star system that could have left behind a 'zombie star' after an unusually weak supernova explosion. The team used Hubble Space Telescope images taken years before the stellar explosion to identify a blue companion star feeding energy to a white dwarf.
The Y dwarf WISE J0304-2705 is an extremely cool object, currently at 200-300°F (100-150°C), which may have spent its youth as hot as a star. Its unusual features suggest it could be an ancient object with a diverse history.
A new study suggests that consuming resistant starch alongside red meat can lower the risk of colorectal cancer. The study found that butyrated resistant starch reduced levels of certain genetic molecules associated with cell proliferation and increased risk of cancer.
Novae are sudden, short-lived brightenings of stars caused by thermonuclear explosions on white dwarf surfaces. NASA's Fermi Gamma-ray Space Telescope has detected gamma-rays from these events, showing they release up to 100,000 times the annual energy output of the sun.
Researchers found a red blood cell folate concentration range of 1,000 to 1,300 nmol/L may prevent neural tube defects. This biomarker could inform folic acid fortification programs and monitor their success.
Astronomers discover that small galaxies orbit in orderly disc-shaped orbits, contradicting computer models. The phenomenon is observed in about 50% of galaxies, sparking a reevaluation of dark matter's nature and the laws of physics.
A study published in Personality and Social Psychology Bulletin found that women perceive a woman in red as more sexually receptive. In experiments, participants rated the woman in red as more attractive for sex and showed increased derogation towards her fidelity but not financial resources compared to white or green.
Astronomers at Yale University have discovered seven previously unseen dwarf galaxies using a novel telescope that can detect low-surface-brightness objects. The finding suggests the possibility of a new class of galaxies in space, with potential implications for dark matter and galaxy evolution.
Research by Penn State scientists has debunked the existence of two controversial planets around dwarf star Gliese 581, which were believed to be prime targets in the search for extraterrestrial life. The study confirms that signals from the stars' magnetic activity, not the planets themselves, caused the initial findings.
A study published in PLOS ONE analyzed Neolithic deer hair from the Tyrolean Iceman's clothing to shed light on red deer lineage. The results indicate that Alpine Copper Age red deer falls within the western European lineage, contrasting with current populations in the Italian Alps which belong to the eastern lineage.
Austrian researchers found that fresh, young red blood cells can counterbalance the negative effects of jetlag on the cardiovascular system. Blood donations may help reduce the risk of heart disease in shift workers by stimulating the generation of new, healthy erythrocytes.
Whitehead Institute scientists have genetically modified red blood cells to carry valuable payloads, including drugs, vaccines, and imaging agents. The approach uses sortagging, a protein-labeling technique that establishes strong chemical bonds between surface proteins and therapeutic substances.
New observations from NASA's Hubble Space Telescope reveal small galaxies are responsible for forming a significant number of the universe's stars. This finding supports a decade-long investigation into the relationship between a galaxy's mass and its star-forming activity, providing new insights into the early universe's history.
A study published by the American Heart Association found that eating moderate amounts of processed red meat increases the risk of incidence and death from heart failure in men. The study, which included over 37,000 men aged 45-79, found that those who consumed the most processed red meat had a 28% higher risk of heart failure compared...
A new study questions the accepted model of galaxy formation, suggesting that dwarf galaxies may have formed from another galaxy through a tidal interaction. The research criticizes three recent papers that found satellite galaxies to support the standard model, instead finding 'serious issues' with their methods.
Recent study finds satellite dwarf galaxies in the Milky Way and Andromeda do not behave as predicted by the standard model of galaxy formation. The galaxies are instead found in huge disks, moving in the same direction, like planets in our solar system. This mismatch raises concerns about the accuracy of the standard model of cosmology.
A team of astronomers led by Ivana Damjanov has found a treasure trove of compact, densely packed 'red nugget' galaxies in online archives. These galaxies are abundant in the middle-aged universe, providing new constraints on theoretical models of galaxy formation and evolution.
A US-based study of 88,803 premenopausal women found a significant association between high red meat intake and increased breast cancer risk. Replacing red meat with a combination of legumes, poultry, nuts, and fish was linked to a lower risk of breast cancer.
Male dwarf spiders use mating plugs made of a liquid material that hardens over time to block access to the female's sperm storage organ. Small plugs are less effective than large ones, but both size and age play important roles in their efficacy.
Scientists detect the first Thorne-Żytkow object, a bizarre type of hybrid star formed from red supergiant and neutron stars. The discovery provides evidence for a new model of stellar interiors and offers insights into heavy element production in the universe.
New research reveals how red tide's chemicals disable competitor algae without killing them, affecting nutrient cycling and primary production in the ocean. Red tide's chemical cues alter large-scale ecosystem processes.
A new study reveals that red dwarf planets may be stripped of their atmospheres due to harsh space weather, making life potentially even rarer. The extreme environment also triggers spectacular aurorae, but would lead to constant darkness and hurricane-force winds.