Articles tagged with Stars
Astronomers used gravitational lensing and adaptive optics to observe a young star-forming galaxy, finding clear signs of orderly rotation and evidence for a spiral disk with a central nucleus. The study demonstrates the power of future telescopes like the Thirty Meter Telescope.
Astronomers have discovered evidence that high-speed collisions between large elliptical galaxies can prevent new stars from forming. The study found that gravitational interactions can heat up gas, making it difficult for stars to cool and form.
Researchers have directly measured a nascent galaxy's magnetic field, finding it is at least 10 times stronger than the average value in the Milky Way. This unexpected result presents a challenge to the leading theory of magnetic field generation and suggests that magnetic fields may play a key role in the evolution of galaxies.
Astronomers have discovered that the number of newly formed stars is higher than initially calculated, with heavy stars forming in clusters near the center of galaxies. The study found that these clusters are more common in the core regions of galaxies, leading to a different ratio of heavy to light stars.
A $70 million CU-Boulder instrument will be installed on the Hubble Space Telescope in mid-October to study the 'fossil record' of gases in the early universe. The Cosmic Origins Spectrograph will gather information from ultraviolet light, allowing scientists to reconstruct the physical condition and evolution of the early universe.
Astronomers study massive galaxies in clusters to understand their growth. The team observed four galaxy groups and found that three of them have a bright companion galaxy, indicating merging systems.
Researchers used a supercomputer to simulate the halo of dark matter surrounding the Milky Way, finding dense clumps and streams in the inner region. The study may help scientists understand what dark matter is and could detect evidence of its particles through gamma-ray signals.
A team of Caltech astronomers reveals that spiral galaxies have more bars than previously thought, with most forming in smaller, low-mass galaxies. The study suggests that bars play a crucial role in galaxy evolution, fueling new star formation and feeding massive black holes.
A newly developed nano-sized electronic device is sensitive to faint traces of far-infrared light, which can provide insights into the earliest stages of star and galaxy formation. The device is potentially 100 times more sensitive than existing bolometers and can detect as little as a single photon of far infrared light.
Case Western Reserve University astronomers have upgraded their telescope to detect intracluster light, a type of starlight formed during galaxy collisions. The new camera system allows them to measure the color of these stars, which can indicate the age of the Virgo cluster.
Scientists have developed a record-breaking ultrafast laser that can aid in the search for Earthlike planets. The new laser offers high speed, short pulses, and high average power, making it ideal for boosting the sensitivity of astronomical tools.
Researchers investigated B-meson decays to understand the origin of matter's dominance over antimatter in the universe. The study reveals a significant discrepancy between theoretical models and observations, suggesting the presence of a new principle of physics.
The Naval Research Laboratory will design a lunar telescope, the Dark Ages Lunar Interferometer (DALI), to study the last unexplored epoch in the Universe's history. The telescope aims to detect signals from hydrogen atoms in the Dark Ages, which can provide insights into the first stars, galaxies, and modern Universe.
The Large Binocular Telescope on Mount Graham achieved its first binocular light using twin side-by-side 8.4-meter primary mirrors, showcasing the telescope's power and clarity. The images reveal details of the spiral galaxy NGC 2770, including newly formed hot stars and older, cooler stars.
Researchers used astronomy technology to develop a system that provides more precise images of single molecules tagged with nanoprobes, allowing for detailed information about molecular binding and gene sequences. The technology enables high-speed detection and identification of individual molecules at nanometer resolution.
The Atacama Large Millimeter/submillimeter Array (ALMA) will provide astronomers with unprecedented views of the origins of stars, galaxies, and planets. ALMA's high-resolution capabilities will enable scientists to unravel longstanding mysteries in astronomy.
Researchers have discovered a multi-planet system with two large planets similar to Jupiter and Saturn, suggesting that planetary systems like our own may be common in the Milky Way galaxy. This is the first discovery of its kind, using a new gravitational microlensing technique.
Astronomers at Rutgers and Penn State universities discovered galaxies in the distant universe that are ancestors of spiral galaxies like our Milky Way. The newly discovered galaxies are small and have fewer stars, but were fertile breeding grounds for new stars that ionized hydrogen atoms and emitted Lyman alpha light.
Researchers found blue clusters of stars, nicknamed 'blue blobs', in a structure called Arp's Loop between M81 and M82 galaxies. The stars are less than 200 million years old and contain the equivalent of five Orion Nebulae.
An international team of scientists has identified a tiny galaxy, about half the size and one-tenth the weight of the smallest distant galaxies typically observed. The galaxy is 100 times lighter than our own Milky Way and is 100 times closer to us than the nearest known structure, the Virgo cluster.
Astronomers have discovered 'embryonic planets' forming in nearby star systems using new Hubble Space Telescope imagery. These small, Pluto-sized bodies are thought to be the first stage of planet formation and may hold the key to understanding how our own planet came to be.
Researchers found a strong correlation between black hole presence and reduced star formation in heavy galaxies. The energy generated by massive black holes may heat up gas, preventing new stars from forming.
A groundbreaking study reveals that the first stars formed at the start of the Universe depend on dark matter's nature. The research suggests that some of these primordial stars can still be found in the Milky Way galaxy today.
Astronomers have witnessed the rare sight of four galaxies crashing into each other, kicking up billions of stars and forming a single, massive galaxy. The merger, observed using NASA's Spitzer Space Telescope and WIYN Telescope, provides unprecedented insight into how the most massive galaxies in the universe form.
A new study using Chandra finds that younger, more distant galaxy clusters contain far more actively growing supermassive black holes than older, nearby ones. This rapid growth allows these black holes to thrive and influence their host galaxies.
The James Webb Space Telescope model is on display in Dublin, Ireland, providing a glimpse into the successor to the Hubble Telescope. The model was built by Northrop Grumman and weighs over 12,000 lbs., featuring a sunshield that 'breathes' thanks to a special material imported from France.
Researchers used supercomputers to simulate galaxy mergers, revealing the formation of a new type of structure - a central disk of gas that can be thousands of light years wide. The simulations predict that the gas in this disk will extract energy from the orbiting black holes, causing them to merge and produce strong gravitational waves.
Researchers have captured an image of Altair, a hydrogen-burning star like our own sun, for the first time. The image was made possible by a novel system to clean up distortions from Earth's atmosphere and a multi-telescope system that combines information from small, distantly spaced telescopes.
The Cassini spacecraft has mapped the structure of Saturn's rings, revealing densely packed particle clumps that are constantly forming and colliding. The findings suggest the mass of the rings may be twice or more previous estimates, with implications for understanding the origin and age of Saturn's ring system.
The University of Colorado at Boulder will collaborate with major partners to design and build a 25-meter far-infrared telescope in the Atacama Desert. The telescope will enable scientists to study early stages of star and galaxy formation, as well as solar system origins.
Researchers used adaptive optics to precisely locate and study the environments of two supermassive black holes at the center of a galaxy merger. The observations revealed young star clusters and rotating disks of stars surrounding each black hole.
Astronomers have measured the age of a star in our Galaxy using ESO's VLT, finding it to be 13.2 billion years old, nearly as old as the Universe itself. This discovery was made possible by a new technique that combines radioactive elements thorium and uranium to accurately determine a star's age.
Researchers found evidence of three distinct star populations born within 200 million years in the massive globular cluster NGC 2808. This discovery challenges the long-held assumption that all stars originated at the same time and place, shedding new light on stellar formation in distant galaxies.
The AEGIS survey reveals a consistent relation between galaxy mass and star and gas orbital speed over billions of years, constraining galaxy formation theories. The findings suggest fundamental properties of galaxies have changed little over the past 8 billion years.
The James Webb Space Telescope will enable fundamental breakthroughs in our understanding of the formation and evolution of galaxies, stars, and planetary systems. The telescope will complement and extend the discoveries of the Hubble Space Telescope with longer wavelength coverage and greatly improved sensitivity.
Researchers used Hubble Space Telescope to reveal a large elliptical galaxy with hundreds of globular clusters at an unprecedented 1 billion light-year distance. The discovery provides insights into the age, origin, and evolution of these clusters.
Astronomer Nathan Smith proposes a new theory for the origin of the 1987 supernova's triple-ring nebula, suggesting that unstable blue supergiant stars, called luminous blue variables, may be responsible. Three nearby stars with similar nebulae have been discovered, contradicting the prevailing merger and red-to-blue transition explana...
Researchers at the University of Illinois at Urbana-Champaign have observed a superbubble forming in the Small Magellanic Cloud, a galactic neighbor of the Milky Way. The study reveals that multiple massive stars are blowing bubbles and overlapping supernova remnants, which may eventually merge into one enormous cavity.
Researchers found that gas giants either form within the first 10 million years of a sun-like star's life or not at all. The study suggests that gas giant planets must form early in a star's history, offering insights into planet formation.
Astronomers have discovered an enormous halo of red giant stars surrounding the Andromeda galaxy, extending beyond its visible disk and indicating that it may be five times larger than previously believed. The discovery is based on observations of over 500,000 light-years of starry space using advanced telescopes.
A team of astronomers discovered that many large galaxies in the early universe had a low stellar birth rate, suggesting a cosmic 'birth control' mechanism that prevented excessive star formation. The study found that these galaxies formed stars when the universe was just 20% of its current age.
Researchers have found direct proof of dark matter's existence in a study using state-of-the-art telescopes. The team observed two merging galaxy clusters, revealing massive amounts of non-luminous matter that don't interact with normal matter.
Scientists have discovered large, rotating disc galaxies that formed on a rapid time scale, just 3 billion years after the Big Bang. These findings reveal unprecedented details about the anatomy of these distant proto-disc galaxies, including their gas motions and star formation rates.
A University of Colorado study suggests using a gigantic, daisy-shaped space shield to block out light from parent stars and allow telescopes to image distant Earth-like planets. The concept enables astronomers to identify planetary features and detect biomarkers like methane and oxygen.
A team of astronomers produced the clearest map to-date of star-forming clouds in the Milky Way, enabling deeper insights into the origin of stars. The new illustration reveals similar lumpy structures in molecular clouds, suggesting that all clouds form stars in roughly the same proportion.
Scientists study stardust in labs to understand element formation and stellar evolution. The analysis of isotopic compositions provides clues about nuclear and chemical processes in stars.
Researchers have discovered young, massive stars in ultra-luminous infrared galaxies, surrounded by delicate crystalline silicates called Forsterite. This finding provides new insights into the formation and evolution of these violent cosmic environments.
Astronomers detect a vast hot halo extending over 60,000 light years around the massive spiral galaxy NGC 5746. This discovery resolves a long-standing issue in galaxy formation theory, suggesting that large spiral galaxies should be immersed in halos of hot gas left over from the galaxy formation process.
Researchers at the University of Illinois created composite images of optical, radio, infrared, ultraviolet and X-ray wavelengths to understand massive stars' impact on their galactic surroundings. The study reveals that massive stars energize and enrich the interstellar medium with strong ultraviolet radiation and fast stellar winds.
Two new studies using Hubble Ultra Deep Field data show a link between galaxy assembly and supermassive black hole growth. Tadpole galaxies, with bright knots and tails caused by mergers, suggest that black holes are enshrouded in dust, making them invisible during the merging process.
Researchers searched for dwarf galaxies in nearby galaxy cloud using Two Micron All Sky Survey and Very Large Telescope. However, no stars were detected, suggesting alternative explanations for the missing galaxies.
A new study analyzing data from the Extended Groth Strip Survey found that galaxy weights play a crucial role in determining star formation rates. Researchers discovered that heavy galaxies form stars early and rapidly, while smaller galaxies form their stars over longer timescales.
Astronomers have found a massive star cluster in the Milky Way, consisting of 14 supergiants with a total mass of at least 20,000 solar masses. This discovery may challenge existing massive star formation models and provides valuable insights into the evolution of these stars.
A team of astronomers used a rare stellar occultation to determine Charon's radius with great accuracy, finding it to be 603.6 km. They also set an upper limit on the existence and pressure of Charon's atmosphere, suggesting it is likely icy with little or no nitrogen.
A study using hundreds of images from two deep sky surveys found that more than half of the largest galaxies in the nearby universe have collided and merged with another galaxy. The mergers occur quickly, leaving faint features difficult to detect, but confirm predictions for large-scale structure formation. Ongoing study will reveal i...
Astronomers find massive stars forming close to super-massive black holes, challenging previous theories about their role in galaxy evolution. Researchers used Chandra X-ray Observatory data to study the Sagittarius A* (Sgr A*) star cluster near the Milky Way's central black hole.
The $400,000 award will fund a starshade-shaped 'New Worlds Observer' that blocks parent star light and captures planet images. Scientists can map planetary systems, detect biomarkers and study features like oceans and continents.
A new technique uses a machine vision algorithm to identify individual whale sharks based on their spot patterns, allowing for better conservation efforts. The ECOCEAN Whale Shark Photo-identification Library has been established to store and analyze whale shark photographs.
A recent study published in Nature refutes previous claims of missing dark matter in elliptical galaxies, suggesting that massive dark-matter halos are present around these galaxies as well. The research uses simulations of galaxy mergers to explain the observations made by earlier studies.
Astronomers detect unusual quasar with no visible host galaxy, sparking debate about its origin. The object's properties suggest a rare collision between galaxies, potentially illuminating the formation of massive black holes and their role in shaping the universe.