A new method has been developed by HKU astronomers to estimate more accurate distances between planetary nebulae and the Earth. The technique uses three sets of data, including object size, brightness, and dimming, to create a robust distance scale that can provide distances accurate to 20 percent.
A team of astronomers discovered the most detailed record ever of a Fast Radio Burst (FRB), indicating that it originated in a highly magnetized region of space. The research suggests a link to recent supernovae or active star-forming nebulae, significantly narrowing down the source's environment and type of event.
Researchers have imaged tube-like structures in the Earth's magnetosphere, which are 500 to 700 kilometers above the surface. The structures were detected by mapping variations in radio source positions and exploiting the MWA's rapid snapshot capabilities.
A team of astronomers has discovered the most massive pair of white dwarf stars yet found, which will merge in the future to form a runaway thermonuclear explosion leading to a Type Ia supernova. This discovery provides new insights into astronomical distances and dark energy, shedding light on the expansion of the Universe.
A team of researchers has created a high-resolution map of the Ophiuchus molecular cloud, identifying 75 dense cores and finding that their masses follow a log-normal distribution. This suggests that turbulence plays a significant role in shaping the evolution of the cloud.
The High Energy Stereoscopic System (H.E.S.S.) has detected three powerful gamma-ray sources in the Large Magellanic Cloud, including a pulsar wind nebula and a supernova remnant. These discoveries provide new insights into the formation of cosmic structures and the evolution of galaxies.
A recent study led by University of Miami scientist Massimiliano Galeazzi has identified the 'local hot bubble' as the dominant source of the diffuse X-ray background in space. The team measured the soft X-ray emission at low energy, confirming that it comes from a hot bubble of gas within our galaxy.
In 1917 Einstein applied general relativity to a static universe, introducing the cosmological constant to address gravitational collapse. He resisted expanding universe views despite contemporary suggestions from astrophysicists Alexander Friedman and Georges Lemaître.
Researchers found that strongly interacting binary stars are necessary for powerful, bipolar jets of gas and dust to form in planetary nebulae. The jets are produced by accretion processes that provide fuel for the outflows.
Researchers used data from the Sloan Digital Sky Survey to discover measurable shifts in giant gas clouds around galaxies in a span of just five years. The findings suggest that these clouds are much smaller than previously thought, with implications for how galaxies form and evolve over time.
Researchers discovered argon hydride ions in the Crab Nebula, a supernova remnant, using ESA's Herschel Space Observatory. The findings support theories on how argon forms in nature and provide evidence for the formation of noble gas molecules in space.
Astronomers are closer to understanding the formation of planetary nebulas after discovering a star in the southern sky with a strong magnetic field. The 'blooming' star is creating a jet of charged particles that glow with radio waves, and researchers believe the magnetic field may play a key role in shaping its symmetrical jets.
A team of astronomers found that butterfly-shaped planetary nebulae are mysteriously aligned in the sky, with their long axes aligned along the plane of our galaxy. This surprising result hints at a more mysterious factor influencing the formation of these objects, possibly due to strong magnetic fields as the bulge formed.
NASA's Hubble Space Telescope has been providing amazing images of the universe since April 1990, while the next-generation James Webb Space Telescope will reveal mysteries of the universe in much greater detail. The new free e-Books offer interactive resources and insights into both telescopes' science and technology.
A team of astronomers, led by Joel Kastner from RIT, has conducted the most comprehensive X-ray survey to date for planetary nebulae using Chandra's exceptional 'X-ray vision'. The study reveals new insights into the violent processes of stellar death and wind collisions in X-rays.
A study using the VLT found that 75% of O-type stars are in binary systems, with a higher proportion of interacting pairs than previously thought. This discovery has profound implications for galaxy evolution, as these heavyweights play a key role in shaping galaxies through violent phenomena such as stellar mergers and gamma-ray bursts.
Astronomers using Hubble Space Telescope images have created time-lapse movies revealing dynamic behavior of stellar jets. The studies show clouds of dust and gas within the jets move at different speeds, challenging existing understanding of star birth processes.
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.
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.
A new high-resolution panorama of the Milky Way has been created by physicist Axel Mellinger, showcasing stars 1000 times fainter than human eyes can see. The image, taken over 22 months and covering 26,000 miles, accounts for distortions and varying background light to produce a seamless fit.
A two-hour observation using Multi-Conjugate Adaptive Optics (MCAO) system revealed changes in Jupiter's smog-like haze over the past three years, likely due to a planet-wide upheaval. The images show a major alteration in the brightness of the equatorial haze, indicating an increase in haze or its movement to higher altitudes.
Researchers are using planetary nebulae as probes to uncover patterns of chemical enrichment in spiral galaxies. By analyzing the chemical elements in these shells of gas, scientists can gain insights into how galaxies were formed and developed.
Researchers at the University of Rochester found that planets or low-mass stars orbiting dying stars create breathtaking objects in the sky. The study explores how these companions shape planetary nebulae through spiral waves and magnetic fields, producing striking shapes like the Dumbbell Nebula.
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.
The Suzaku X-ray observatory has provided new insights into cosmic powerhouses, identifying pulsar wind nebulae as the source of high-energy gamma rays. The observations also suggest that these objects are accelerating mostly protons, leading to a better understanding of the origin of cosmic rays.
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 have solved the mystery of Quintuplet stars by identifying them as young massive binary stars producing large amounts of dust. The study captures the stars just before disintegrating in supernovae explosions, revealing a unique pinwheel nebulae around each star.
The discovery of a double helix nebula near the Milky Way's black hole center suggests an extremely strong and highly ordered magnetic field. This twisting wave is thought to be caused by the interaction between the galaxy's magnetic field lines and a disk of gas orbiting the black hole.
Researchers discovered young super nebulae around giant star clusters, containing up to a million young stars, and emitting radiant power billions of times that of the sun. The discovery raises questions about why Milky Way no longer forms similar clusters after 10 billion years.
Two astronomers have used NASA's Chandra X-ray Observatory to discover a shell of superheated gas around a dying star in the Milky Way galaxy. The study reveals how material ejected at two million miles per hour can heat previously ejected gas to emit X-rays, providing new insight into the persistence of such gas around dying stars.
A total of eight new VHE gamma-ray sources have been found in the Milky Way's disc, doubling known sources at these energies. The discovery includes two 'dark accelerators' without obvious counterparts in other wavelength bands, sparking excitement among astronomers.
Astronomers have discovered a quadra-polar nebula with two disks formed at different times, challenging the companion-star-only model. The study, led by C. Robert O'Dell, used sharp new images from the Hubble Space Telescope to reconstruct the 3D structure of the Helix Nebula.
Astronomers confirm that the Virgo Cluster of galaxies is a highly non-uniform structure consisting of several subunits. The cluster's formation history can be studied using planetary nebulae stars, which trace the masses within the region. These findings provide new insights into the dynamic evolution of galaxy clusters.
Researchers using European Southern Observatory's Very Large Telescope discovered a unique type Ia supernova that exploded within a flat, dense disk of dust and gas. The findings suggest that this and other precursors resemble protoplanetary nebulae, which may indicate wide differences among their progenitors.
Researchers from Cardiff University suggest that a large comet impact could throw material containing micro-organisms out of the planet's atmosphere, infecting hundreds of millions of nascent planetary systems. This viable bacterial outflow would survive heat and radiation, ultimately spreading Earth-life across the galaxy.
The National Science Foundation has announced the winners of its first-ever International Science and Engineering Visualization Challenge. Two hundred ninety-seven entries were qualified for judging, with the top prize awarded to Brandon Pletsch's 'Auditory Transduction Animation' and Dee Breger's colorized photograph 'Mongolian Frost ...
Astronomers using the Chandra X-ray Observatory discovered a complex shape of the Cat's Eye Nebula, which is driven by hot gas. The team also found an unexpected X-ray source at the central star, sparking questions about its formation.
Researchers unveil a new model suggesting magnetic dynamo forces shape planetary nebulae by twisting radiating material into distinctive shapes. The discovery sheds light on the cosmic 'paintbrush' responsible for creating stunning nebulae, with implications extending beyond our solar system.
Scientists have found a mid-mass black hole in the M82 galaxy, which packs the mass of at least 500 suns into a region about the size of the Moon. The discovery opens a new field of research and suggests that such black holes may exist in our own galaxy.
When a star swallows a planet, it can experience profound effects on its evolution, including changes in spin rate and emission of infrared radiation. The simulations show that large planets can survive for thousands of years before being vaporized by the heat, leaving behind tell-tale signs such as high lithium abundance.
Dr. Karen Kwitter's research focuses on the chemical composition of planetary nebulae, which can reveal information about the life cycle of stars and the evolution of our galaxy. By analyzing light spectra from these clouds, she aims to refine models of galactic chemical evolution.
Astronomers have discovered large numbers of previously unknown stars in the Virgo Cluster using dying green stars as tools. The findings suggest that at least 22% of Virgo's light is coming from these hidden stars, and could affect estimates of universe mass.
Astronomers have discovered a large number of slow X-ray pulsars in supernova remnants, which are believed to be neutron stars with huge magnetic fields. These so-called magnetars rotate much slower than expected and are invisible to radio probes.
The MSX satellite has obtained two unique images of the Small Magellanic Cloud, a small companion galaxy to the Milky Way. The images reveal new details about the galaxy's structure and evolution, including hot stars, cool giant stars, and nebulae.