Articles tagged with Stars
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
The Hubble Space Telescope has observed the historic variable star V1, which helped confirm the size of the universe and its expansion. The observations, conducted in collaboration with amateur astronomers, provide new insights into the properties of Cepheid variables and their role in measuring distances to galaxies.
Bennett's team found 10 free-floating planets roughly the mass of Jupiter, suggesting planetary systems often become unstable, ejecting planets from their orbits. The discovery confirms that free-floating planets exist and are quite common, estimated to be twice as many as stars.
NC State physicist Dean Lee and colleagues create simulations using effective field theory to calculate low-lying states of carbon-12, confirming the Hoyle state's existence. The research provides a better understanding of 'fine-tuning' in stellar processes that produce essential elements for life.
Detecting raging storms of molecular gas streaming away from galaxies for the first time, Herschel reveals powerful outflows that could halve a galaxy's star-forming capacity within one million years. This discovery offers insights into galactic evolution and negative feedback mechanisms.
Physicists at Rice University have detected the heaviest antimatter particle ever observed, antihelium-4, using a time-of-flight detector designed at the institution. The discovery provides new insights into the conditions of the early universe and the existence of antimatter galaxies.
Researchers detect 18 examples of antihelium-4, a massive antimatter partner of helium, in data from over 1 billion collisions at RHIC. The discovery could provide crucial insights into the early universe's matter-antimatter balance and the search for bulk antimatter elsewhere.
Two unique types of mirrors, Primary and Secondary EDUs, have arrived at NASA's Goddard Space Flight Center. The mirrors will work together to observe distant galaxies and unexplored planets. The Primary mirror is composed of 18 hexagonal segments, while the Secondary mirror directs light from the Primary mirror to Webb's instruments.
Italian researchers created space-like conditions in a vessel to confirm the behavior of astrophysical jets, which travel at high speeds and stretch across vast distances. The study found that these jets behave according to Newtonian Dynamics, confirming successful 3D simulations.
A newly merged black hole can be detected by observing the tidal disruption of surrounding stars, which will provide accurate distances and precise sky coordinates. This could lead to a better understanding of dark energy and Einstein's general theory of relativity.
A new model developed by Sheldon Jacobson predicts the most likely Final Four combinations based on seedings, rather than team performance. The model suggests that choosing a combination of two top-seeded teams, a No. 2 seed, and a No. 3 seed is the best bet for winning the office pool.
Researchers have developed a new strategy to improve microscopy by following the astronomers' guide star technique, allowing for sharper images of biological samples. This method uses adaptive optics and two-photon fluorescence microscopy to correct for light waves hitting cells in different directions.
Researchers have discovered a thick stellar disc in the Andromeda galaxy, composed of older stars with distinct chemical and orbital properties. This finding sheds light on the formation and evolution of spiral galaxies like our own Milky Way.
Physicists propose beaming laser at atmospheric sodium to measure global magnetic field, offering cheaper alternative to satellites. Ground-based measurements can avoid problems caused by satellite movement and electronic instrument effects.
A NASA team led by University of Florida astronomers has discovered six new planets in a distant solar system resembling our own. The planets, orbiting Kepler-11, are rocky or ice-combined and have densities lower than water but higher than Earth.
The Kepler-11 system features five inner planets with masses between 2.3 and 13.5 times that of Earth, orbiting within 50 days, and a sixth planet with an orbital period of 118 days. The planets' densities suggest they may be mostly water or hydrogen-helium gases, defying expectations for small hot planets.
M82's rapid star formation is believed to have been triggered by a close encounter with neighboring galaxy M81. The Chandra image reveals a unique opportunity to study conditions similar to those of the early universe and the consequences of supernovas in starburst galaxies.
The Planck satellite mission has provided unprecedented all-sky coverage of cosmic dust, offering insights into dust evolution in different environments. The data will help researchers understand the complex history of our universe and its present form.
Astronomers have discovered a supermassive black hole in a nearby dwarf galaxy, Henize 2-10, which is thought to be one of the first galaxies to form in the early Universe. The finding suggests that supermassive black holes formed before their surrounding galaxies, challenging current understanding of galaxy evolution.
Astronomers used Hubble Space Telescope to observe eight massive stars in Small Magellanic Cloud, finding five without large neighbors and three in tiny clusters. The study suggests that giant stars can form randomly across the universe, including in isolation.
Astronomers have discovered a new alien world, Qatar-1b, a hot Jupiter located 550 light-years from Earth. The planet orbits extremely close to its star, resulting in scorching temperatures and a unique rotational period.
Elliptical galaxies are found to contain five to ten times as many red dwarfs as thought, with implications for galaxy formation and evolution. The discovery could lead to a reevaluation of dark matter in these galaxies.
Astronomers Andrey Kravtsov and Nick Gnedin's simulations reveal why galaxies were less efficient at making stars in the early universe. The team's model explains the connection between dust, gas, and star formation, shedding light on the evolution of spiral galaxies.
Astronomers from Bonn and St. Andrews discover that the discrepancy between calculated and observed star numbers may be due to an overestimation of stellar crowding, a phenomenon where young stars are born in groups, leading to more massive stars being overlooked.
New work by astrophysicist David Kipping reveals that astronomers can calculate a star's mass using its orbiting planet and moon. By measuring the size of the planet and moon relative to the star and their orbital periods, scientists can use Kepler's Laws of Motion to determine the density of the star.
A team of astronomers has discovered that young galaxies can grow by sucking in cool streams of hydrogen and helium gas, forming new stars. This process, known as accretion, provides a gentler alternative to galaxy mergers, which are thought to be the primary mechanism for galaxy growth.
Distant galaxies in the early Universe are creating 1,000 new stars per year, exceeding our galaxy's star formation rate. These galaxies contain enormous amounts of raw material for new stars, suggesting a higher gas content than previously thought.
A team of astronomers has confirmed the presence of an extreme ultra-luminous X-ray source in a nearby galaxy, which may indicate the presence of an intermediate mass black hole. The object, HLX-1, is located ~300 million light years from Earth and emits radiation 100 times brighter than most other objects in its class.
A team of astronomers from the University of Florida has discovered two Saturn-sized planets and a possible third planet with an Earth-like size orbiting a distant star. The discovery was made using a new method of confirming planets called transit timing variation, which allows for more efficient confirmation of planetary systems.
Astronomers at Texas A&M University have discovered that a significant fraction of ancient galaxies in the CLG J02182-05102 cluster are still actively forming stars. The team found that star-forming galaxies are more common in this cluster than in nearby galaxy clusters.
A team of astronomers from the University of Arizona developed a technique called laser adaptive optics, allowing for sharper images and faster data collection. This technology will enable scientists to study ancient galaxies and star clusters more efficiently.
Rochester Institute of Technology scientist Don Figer is developing a new detector technology that can directly image and characterize exoplanets, potentially finding smaller, rocky planets like Earth. This technology could reduce detection time by one-third and overcome current limitations.
Astronomers propose a new method for detecting extraterrestrial life by analyzing signals from advanced civilizations. The Benford beacons concept suggests that alien signals would not be continuously broadcast but rather pulsed and narrowly directed, potentially making them more detectable.
Researchers at Durham University use huge computer simulations to recreate the beginnings of the Milky Way, finding that many ancient stars originated from smaller galaxies torn apart by galaxy collisions. The simulations provide a blueprint for galaxy formation and reveal clues to the early history of the Milky Way.
A team of scientists led by Jay Pasachoff observed the shiniest object in the solar system, 2002 TX300, a fragment of Haumea, using a network of telescopes. The measurements reveal its icy surface and size, confirming it as a small, reflective body with an age estimated to be around a billion years.
Newberg's team will use LAMOST data to plot the position, speed, and composition of over 7 million stars, shedding light on dark matter distribution and galaxy formation
Researchers have developed a new method for describing proton and neutron binding in nuclei, enabling more accurate predictions of astrophysical reactions. This breakthrough may improve our understanding of star life cycles.
Astronomers have observed a galaxy 10 billion light-years away, finding four discrete star-forming regions making new stars 250 times faster than the Milky Way. The study reveals exquisite detail of these regions, which are 100 times brighter than nearby galaxies.
A massive galaxy in the early Universe created stars like our sun at a rate equivalent to 250 suns per year, researchers say. The team observed four star-forming regions within the galaxy, each over 100 times brighter than similar regions in the Milky Way.
Researchers have solved a 20-year-old astrophysical puzzle using gas dynamical simulations. Filamentary structures formed during the collapse of infalling gas absorb massive stars' radiation, shielding surrounding nebulae from heating.
Researchers at Durham University have discovered a massive explosion that halted star birth in an early galaxy. The blasts scattered gas needed for new stars, regulating the galaxy's growth.
Scientists have discovered a relic star from the early universe, which has a remarkably similar chemical composition to the Milky Way's oldest stars. The discovery supports the theory that our galaxy underwent a 'cannibal' phase by swallowing smaller galaxies and other galactic building blocks.
A study led by Queen's University astronomer Terry Bridges reveals that up to a quarter of the Milky Way's star clusters are foreign, originating from other galaxies. The research suggests six additional dwarf galaxies may exist within the galaxy beyond the two previously confirmed.
The University of California, Berkeley team's paper published in Science won the 2009 Newcomb Cleveland Prize for outstanding contributions to the field. The award recognizes the first visible-light picture of an extrasolar planet and its potential to change our view of how planets originate.
Astronomers have found that typical galaxies still hold sufficient quantities of gas and dust for star formation, but their efficiency has slowed down over cosmic time. This means that present-day galaxies form fewer stars due to a decrease in gas and dust supplies rather than a change in their ability to make stars.
Dr Andrew Benson and Dr Nick Devereux's research reveals the evolutionary history of the universe, explaining galaxy shapes and numbers. Their 'Lambda Cold Dark Matter' model suggests that dark matter haloes drive galaxy evolution, with elliptical galaxies resulting from multiple mergers.
Astronomers found that only 10 percent of stars host planetary systems similar to our own, with several gas giant planets in the outer part of the system. The discovery was made using gravitational microlensing and is based on 10 years' worth of data from the MicroFUN survey.
Astronomers have unveiled an extraordinary cosmic relic, Terzan 5, which formed in at least two different epochs, providing insights into the origin of the galactic bulge. The discovery suggests that Terzan 5 might be the surviving remnant of a disrupted dwarf galaxy contributing to the Milky Way's formation.
Scientists at Durham University discovered rapid star formation in 'stellar nurseries' of infant galaxies, creating new stars at a rate 100 times faster than expected. This finding provides insight into the birth of our own galaxy and how it formed its first stars.
Researchers will study turbulent transport and organization in fusion and astrophysical plasmas to design better, smaller and cheaper fusion systems. Understanding the link between flow self-organization and large-scale flow dissipation may also improve ITER's fusion power production.
Astronomers, including Queen's University physicist Larry Widrow, have discovered a nearby cosmic encounter between the Andromeda and Triangulum galaxies, which collided about two to three billion years ago. The collision caused millions of stars to be ripped from the Triangulum disk, forming a faint stream visible in the PAndAS data.
A team of international researchers has challenged the long-held idea that the ratio of massive stars to lighter ones in star-forming regions remains consistent. They found that this ratio, known as the initial mass function, varies significantly between different galaxies, with some forming more low-mass stars than expected.
Recent simulations by astrophysicists reveal that the first black holes in the universe grew slowly and were deprived of gas, contradicting popular theories. The simulations suggest that these early black holes may have played a more complex role in the formation of supermassive black holes observed today.
Astronomers have discovered a mechanism for the formation of dwarf spheroidal galaxies, which are thought to be composed mostly of dark matter. The 'cosmic dance' of gravitational interactions between galaxies may trigger the removal of stars from smaller dwarf galaxies, transforming them into the observed dwarfs.
Researchers found that turbulence created by material ejected from supermassive black holes' disks prevents cooling gas from forming stars. The discovery explains a long-standing mystery in galaxy cluster physics.
Researchers created a detailed computer simulation of early star formation, revealing the existence of twin stars. The simulations showed that these stars provide seeds for next-generation star formation, helping scientists understand how galaxies formed.
The study found that intense heat from early stars and black holes evaporated gas from small clumps of dark matter, rendering them barren. This natural explanation for galaxy formation supports the view that cold dark matter is the best candidate for the mysterious material believed to make up most of the universe.
A Kansas State University professor is studying new theories about the origin and future of life in the universe. He suggests that artificial black holes could play a part in the evolution of life and potentially spread it throughout the galaxy.
Most 'dark' gamma-ray bursts are found to be similar to normal bursts with an afterglow, but with nearly all visible light obscured by patchy dust. This suggests that gamma-ray bursts may help track star formation and death in distant galaxies.
Researchers at Harvard-Smithsonian Center for Astrophysics have created an 'astro-comb' to help detect lighter planets around distant stars. The technique sharpens spectroscopy, enabling more accurate pinpointing of planet locations and opening possibilities for detecting more Earth-like planets.
The CU-Boulder instrument, part of NASA's Hubble Servicing mission, will probe the universe's evolution from its perch on the Hubble Space Telescope. Scientists aim to reconstruct the physical conditions and evolution of the early universe by gathering information from ultraviolet light.