Articles tagged with Observational Astronomy
New research predicts the existence of 80-100 additional satellite galaxies surrounding the Milky Way, orbiting at close distances. These 'orphan' galaxies are lost in most simulations but should have survived in the real Universe.
The DART mission's successful asteroid deflection has revealed a complex issue: massive boulders carrying three times the momentum of the spacecraft itself. This unexpected blast complicates future asteroid deflection efforts, as researchers now need to consider the physics of these chaotic and filamentary structures.
The Vera C. Rubin Observatory has unveiled the first images of the sky obtained with its LSST camera, a 3200-megapixel resolution car-sized camera that can photograph 45 times the area of the full moon in just three nights. The high-definition images will provide unprecedented views of the southern sky and reveal faintest and furthest-...
The James Webb Space Telescope has captured the direct image of a previously unknown exoplanet, TWA 7 b, located within a disk of rocky debris and dust. The exoplanet is ten times lighter than previously captured ones and more similar to Earth than gas giants.
A team of astronomers created a galactic masterpiece using the European Southern Observatory’s VLT, revealing previously unseen features in the Sculptor Galaxy. The map comprises thousands of colors, providing insights into the stars, gas, and dust within the galaxy.
The COSMOS-Web field maps nearly 800,000 galaxies spanning 98% of cosmic time, challenging existing notions of the infant universe. Researchers see roughly 10 times more galaxies than expected at incredible distances, sparking new questions about the early universe and its mysteries.
Researchers analyzing the atmosphere of WASP-121b using the James Webb Space Telescope detected water, carbon monoxide and silicon monoxide in both the dayside and nightside hemispheres. This is the first conclusive identification of SiO in any planetary atmosphere.
A team of astronomers from ICRAR discovered a new type of cosmic phenomenon called ASKAP J1832-0911, which emits pulses of radio waves and X-rays for two minutes every 44 minutes. This is the first time such an object has been detected in X-rays.
Researchers use NASA's James Webb Space Telescope to investigate a protoplanetary disk around a young star in the Lobster Nebula. They found sufficient solid material to potentially form at least 10 rocky planets and detected various molecules that contribute to planetary atmospheres.
Researchers have detected 1,678 galaxy groups or proto-clusters with unprecedented insights into the formation and evolution of galaxies. The study provides a unique view of how galaxies have evolved since the universe was under a billion years old.
Researchers discover over 500 dense cores in Milky Way's Central Molecular Zone, which may indicate widespread presence of protoplanetary disks. The findings propose two scenarios: self-absorption of smaller structures within dense cores or growth of dust grains in these systems.
Astronomers used NASA's NICER to map debris from cosmic black holes, revealing the physical environment of repeating X-ray outbursts near monster black holes. The study found that each impact resulted in about a Jupiter's worth of mass reaching expansion velocities around 15% of the speed of light.
A massive family of over 1000 young stars in the Milky Way has been spotted behaving oddly, moving away from each other at a much faster rate than expected. Using Gaia's vast spectroscopic data, scientists developed a new model to explore and identify these young stars.
A team of researchers at Nagoya University has discovered a fast-moving, high-temperature gas flow in the center of the Centaurus cluster of galaxies. This finding may solve the 'cooling flow problem', which explains why galaxy clusters appear to be warm despite emitting X-rays.
The study provides a new look at the galactic region surrounding our solar system, revealing a roughly uniform background Lyman alpha sky brightness. The findings suggest hot interstellar gas bubbles may be regions of enhanced hydrogen gas emissions at a wavelength called Lyman alpha.
Researchers found that super-Earths can exist far from their host star like gas giants do from the sun. The team's results suggest these massive worlds are prevalent across the universe, with at least one super-Earth present for every three stars.
Roman's surveys will investigate dark energy and dark matter governing cosmic evolution, and study the demographics of worlds beyond our solar system. The missions include High-Latitude Wide-Area Survey, High-Latitude Time-Domain Survey, and Galactic Bulge Time-Domain Survey.
Scientists have discovered a planet with a comet-like tail, shedding surface minerals and evaporating away due to its close proximity to its star. The planet is estimated to disintegrate in about 1 million to 2 million years, leaving behind a long and dusty tail.
The NRL's Narrow Field Imager (NFI) has captured its first light images, primarily focused on calibrating the instrument and confirming pointing accuracy. The NFI will enable scientists to study the Sun's corona in unprecedented detail, helping to understand and predict coronal mass ejections.
A distant galaxy's black hole has suddenly activated, producing rare and intense X-ray light bursts. The phenomenon, known as a quasiperiodic eruption, challenges existing models of black hole behavior and offers an unprecedented opportunity for astronomers to study the energetic events powering these cosmic monsters.
Research suggests that massive stars in the Small Magellanic Cloud are being pulled apart by the Large Magellanic Cloud. The discovery reveals a new pattern in stellar motion, which could transform our understanding of galaxy evolution and interactions.
A new study proposes a third category of galaxies: red star-forming. These galaxies produce low-mass stars and may have played a significant role in the universe's history. The findings could change our understanding of galaxy evolution, star formation, and the life cycle of galaxies.
Researchers estimate that detecting no signs of life on 40-80 exoplanets would allow for an upper limit on the prevalence of life in the universe. However, uncertainties and biases in individual observations must be carefully considered to ensure reliable results.
International team improves asteroid impact threat estimates from 3% to below 0.001%, with a new risk of 4% chance of impacting the Moon instead, threatening human space infrastructure.
A new study by UNSW Sydney researchers has discovered the sound frequencies of a cluster of stars 2700 light years away, allowing scientists to map the history of the Milky Way and other galaxies. The discovery uses oscillation frequencies to determine a star's age and mass, providing insights into galaxy formation and evolution.
Researchers developed an AI model that classifies variable stars from light curves with high accuracy, outperforming traditional approaches. The StarWhisper LightCurve series achieves near 90% accuracy with minimal manual intervention, paving the way for parallel data analysis and multi-modal AI applications in astronomy.
The NRL-developed Narrow Field Imager is a compact coronagraph that will image the transition of the Sun's atmosphere to the solar wind, gaining insights into space plasma environments. The PUNCH mission aims to improve prediction and mitigation of space weather events like coronal mass ejections.
Researchers propose a revolutionary link between time and dark energy, suggesting that the mysterious force driving the universe's expansion may be used to measure time. The study could pave the way for groundbreaking new fundamental theories and breakthroughs in our understanding of the universe.
The Magellan Adaptive Optics Xtreme (MagAO-X) instrument observed two young planets orbiting PDS 70, revealing compact rings of dust and startling changes in brightness. The team believes these features are telltale signs of the planet's turbulent youth.
Astronomers from Niigata University and The University of Tokyo discovered two enigmatic interstellar objects rich in interstellar ices containing water and organic molecules. The ALMA telescope revealed compact distributions of molecular emission lines, indicating kinematically independent objects at different distances. These unusual...
A new collaboration between ASU, MSU, and LLNL aims to answer the question of how planets form by analyzing the atmospheres of seven young exoplanets. The team will use the James Webb Space Telescope and powerful computers to create atmospheric models that can reveal insights into planetary formation and evolution.
New ESO observations have reduced the likelihood of a 2024 YR4 asteroid impact on Earth in 2032 to nearly zero. The asteroid's orbit was closely monitored with multiple telescopes, and precise measurements were made using ESO's VLT, allowing astronomers to constrain its orbit and rule out an impact.
Researchers from Politecnico di Milano and Georgia Tech analyzed NASA's DART mission to asteroid Dimorphos, revealing a viable mechanism for ejecta evolution and understanding the impact of an asteroid's shape on deflection. The studies suggest that sending multiple smaller impactors can increase the asteroid push while reducing costs.
Scientists discovered a rare binary system consisting of a massive Be star and a compact white dwarf, with the Einstein Probe catching the X-ray signal from its initial flare-up to its fading away. The analysis revealed clues about the elements present in the exploding material, including nitrogen, oxygen, and neon.
Astronomers have mapped the 3D structure of an exoplanet's atmosphere for the first time, revealing a unique climate with powerful winds carrying chemical elements like iron and titanium. The discovery opens the door for detailed studies of alien worlds' weather patterns.
The ESO's VISTA telescope captures the colourful extravaganza of RCW 38, a young star cluster located 5500 light-years away. The image reveals vibrant pink hues from gas clouds and multi-coloured dots representing young stars.
NASA has successfully integrated its deployable aperture cover sunshade with the outer barrel assembly of the Roman Observatory, enhancing the telescope's ability to detect faint light from across the universe. The integration marks a significant milestone in the mission's assembly and testing phase.
The Euclid space telescope has discovered a stunning Einstein ring in the galaxy NGC 6505, showcasing rare gravitational lensing effects. This remarkable finding demonstrates the power of Euclid's high-resolution instruments and provides new insights into the expansion of the Universe.
The Hubble Space Telescope has captured a cosmic bullseye, revealing eight visible rings and confirming a ninth using data from the W. M. Keck Observatory in Hawaii. The galaxy's unique ring structure was formed by a blue dwarf galaxy colliding with its center, creating a new generation of stars.
The Hubble Space Telescope has captured a panoramic view of the Andromeda Galaxy, unveiling hundreds of millions of stars and providing new clues to its evolutionary history. The galaxy's unique structural features, such as coherent streams of stars, suggest a more active recent star formation and interaction history than the Milky Way.
A team of astronomers has obtained detailed images of a small galaxy and its surroundings, revealing features typically associated with larger galaxies. The study found that the mechanisms fueling galaxy growth may be more universal than previously thought, suggesting that even dwarf galaxies can build stellar halos through accretion.
TEGO's three-dimensional tetrahedral structure improves stability and reliability through redundancy and stable center of mass. The configuration also enables the detection of six polarization modes simultaneously, expanding our understanding of gravitational waves.
NASA has successfully integrated its Nancy Grace Roman Space Telescope's payload into the Roman spacecraft, paving the way for transformative cosmic observations. The telescope will undergo extensive testing to ensure proper function and performance in space.
Researchers observed a galaxy nearly 6.5 billion light-years away, revealing a large number of individual stars made visible through gravitational lensing. The discovery provides new insights into the universe's greatest mysteries, including dark matter and stellar populations.
Astronomers at MIT used a novel technique to determine the precise location of a fast radio burst, finding it likely originated from the magnetosphere around a rotating neutron star. The study provides conclusive evidence that fast radio bursts can emerge from this highly magnetic environment.
Researchers identified a group of unusual objects emitting long-duration outbursts of X-rays, which may be caused by binary star systems with white dwarfs and subgiant stars. The discovery of millinovae could provide insights into the astrophysics of Type Ia supernovae.
The Event Horizon Telescope has taken detailed measurements of a galaxy's supermassive black hole and its powerful jets. The research reveals strong magnetic fields close to the event horizon and estimates their strength, consistent with previous estimates.
Astronomers have discovered the first binary star orbiting close to Sagittarius A*, a supermassive black hole at the centre of our galaxy. This finding provides new insights into how stars survive in extreme environments and could pave the way for detecting planets near black holes.
A team of scientists captured an astonishing image of a gamma-ray flare emanating from the supermassive black hole at the center of galaxy M87. The flare was tens of millions of times larger than the event horizon and lasted about three days, providing crucial insights into particle acceleration near black holes.
A new study reveals that sun-like stars experience superflares approximately once per century, releasing massive amounts of energy in short periods. This finding suggests that the Sun's long-term behavior may be more frequent than previously thought, with implications for forecasting dangerous space weather.
Scientists have discovered birth sites of gigantic elliptical galaxies, suggesting large gas flows and galaxy collisions created these ancient systems. The research, published in Nature, may finally unravel the enigma of how these giant galaxies formed.
Astronomers have discovered a fourth planet in the unusual Kepler-51 system, which consists of three ultra-low density 'super-puff' planets. The new planet, Kepler-51e, has a mass similar to the other three and follows a circular orbit of approximately 264 days.
The final data release from NASA's NEOWISE mission encompasses over 26 million images and nearly 200 billion sources detected by the telescope. The new images showcase the full-sky coverage of the survey, revealing previously unseen regions of cosmic dust where stars are born.
The telescope will focus cosmic light and send it to Roman's instruments, revealing billions of objects in space. The assembly underwent rigorous tests simulating launch conditions, temperature control, and gas handling.
A computer modeling study found that glacial isostatic adjustment caused downward movements in the eastern US, while upward movements occurred in eastern Canada, contributing to relative sea-level rise. The research will help generate maps for aquifer management and inform decisions on sea-level rise impacts.
The Dark Wolf Nebula, located 5300 light-years from Earth, is a cold cloud of cosmic dust that obscures the light of stars and other objects. The image, captured by the VLT Survey Telescope, showcases the nebula's ghost-like presence against a bright background, highlighting its unique features.
Researchers at Chalmers University of Technology have developed a system that uses a silent amplifier and record-sensitive receiver to pave the way for faster and improved space communication. The system opens up new communication opportunities in space, allowing for error-free data transmission over long distances.
A University of Washington-led study suggests that rocky planets orbiting M-dwarf stars can maintain stable atmospheres over time, enhancing the chances of supporting life. The James Webb Space Telescope has observed hotter planets without significant atmospheres, but temperate planets in the 'Goldilocks zone' may have stable atmospheres.
The Great Red Spot on Jupiter is not as stable as initially thought, with observations from NASA's Hubble Space Telescope showing it jiggles like a bowl of gelatin. The GRS's size oscillates as it accelerates and decelerates, pushing against windy jet streams.
Astronomers have reduced concerns about a potentially hazardous asteroid swarm near Earth after discovering fewer large space rocks than previously thought. The study found only a handful of asteroids, likely less than 14, that fit the large size class, suggesting a smaller parent object and reducing the risk of extinction-level events.