All Articles Tagged As: stars
 | Super-luminous stellar explosion observed via Caltech's Palomar Observatory, possibly resulting in a quark star ...> Full Article |
 | Basic research may cause astronomers to re-examine the masses and ages of young stars and star formation theories ...> Full Article |
 | For more than 400 years, astronomers have studied the sun from afar. Now NASA has decided to go there. ...> Full Article |
 | X-ray observatory has re-discovered an ignored celestial gem ...> Full Article |
Astronomers have discovered a previously unexpected astronomical phenomenon - a radio jet in a star system where none had been expected - which suggests that all stars and black holes feed in the same way.
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 | Astronomers have used ultrasharp images obtained with the Keck Telescope and Hubble Space Telescope to determine for the first time the masses of the coldest class of "failed stars," a.k.a. brown dwarfs. ...> Full Article |
 | A set of 29 Hubble Space Telescope (HST) images of an exotic type of active galaxy known as a "post-starburst quasar" show that interactions and mergers drive both galaxy evolution and the growth of super-massive black holes at their centers. ...> Full Article |
 | Like a celestial top, the spinning neutron star known as the Crab Pulsar is slowing, a phenomenon that astronomers have yet to fully understand. ...> Full Article |
 | Scientists at NASA reveal a new understanding of the mysterious mechanism responsible for heating the outer part of the solar atmosphere, the corona, to million degree temperatures. ...> Full Article |
 | A supernova that exploded in the 16th century and was visible during daylight for 2 weeks, is now revealing some of its secrets. ...> Full Article |
 | Thirty-seven miles apart, twin stars orbit each other on a high-speed collision course ...> Full Article |
 | Astronomers resolve torus around star in another galaxy ...> Full Article |
 | NASA's Spitzer Space Telescope has found a bizarre ring of material around the magnetic remains of a star that blasted to smithereens. ...> Full Article |
Astronomers have found there is nothing special about the Sun after conducting the most comprehensive comparison of it with other stars - adding weight to the idea that life could be common in the universe.
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 | Red dwarf unleashes the brightest flare ever detected from a normal star outside our solar system ...> Full Article |
 | An ongoing sky survey using the Cornell-managed Arecibo radio telescope in Puerto Rico has turned up a massive, fast-spinning binary pulsar with a mysterious elongated orbit ...> Full Article |
 | Spacecraft to go closer to the sun than any probe has ever gone - and what it finds could revolutionize what we know about our star and the solar wind that influences everything in our solar system. ...> Full Article |
 | Scientists to work on one of the world's most powerful supercomputers, simulating an event that takes less than five seconds. ...> Full Article |
 | The fate of stars that venture too close to massive black holes could be even more violent than previously believed ...> Full Article |
 | Using observations from NASA's Rossi X-ray Timing Explorer (RXTE), an international team of astronomers has discovered a timing mechanism that allows them to predict exactly when a superdense star will unleash incredibly powerful explosions. ...> Full Article |
 | Stunning images, obtained by ESO staff at Paranal, of the green and blue flashes, as well as of the so-called 'Gegenschein', are real cases in point. ...> Full Article |
 | By studying in great detail the 'ringing' of a planet-harbouring star, a team of astronomers using ESO's 3.6-m telescope have shown that it must have drifted away from the metal-rich Hyades cluster ...> Full Article |
 | New insights into solar activity have been revealed thanks to research from a group of Cambridge academics ...> Full Article |
 | An ambitious study of active and inactive galaxies has given new insights into the complex interaction between super-massive black holes at the heart of Active Galactic Nuclei (AGN) and star formation in the surrounding galaxy ...> Full Article |
 | One of the most dynamic events in the interaction between the Sun and the Earth is a 'substorm', an explosive reshaping of the Earth's outer magnetic field. To better understand substorms, scientists in Europe and North America are studying them from space using the Time History of Events and Macroscale Interactions during Substorms (THEMIS) satellites launched by NASA in 2007 and from the ground using a network of all-sky cameras. ...> Full Article |
 | An international team of astronomers has discovered the coldest brown dwarf star ever observed ...> Full Article |
 | Team sees first signs of formation's middle stages ...> Full Article |
 | As a result of intensive collaboration with NASA's Goddard Space Flight Center near Washington, astronomers at Queen's University Belfast have announced an exciting discovery that could pave the way to solving a problem which has been baffling solar physicists for years. ...> Full Article |
 | A medical X-ray technique has been adapted to produce the first detailed map of the structure of the Sun's outermost layer, the corona, created from direct observations. ...> Full Article |
The strongest burst of star formation occurred two billion years after the Big Bang
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 | The Pleiades star cluster will have a beautiful encounter with the slender moon in the western sky after sunset on April 8. Usually the moon's brightness overpowers nearby stars, but not when it's such a thin crescent. Binoculars will reveal the spectacle as the moon passes just below the famous Seven Sisters. ...> Full Article |
Using a new technique, two NASA scientists have identified the lightest known black hole. With a mass only about 3.8 times greater than our Sun and a diameter of only 15 miles, the black hole lies very close to the minimum size predicted for black holes that originate from dying stars.
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 | Astronomers have spied a faraway star system that is so unusual, it was one of a kind -- until its discovery helped them pinpoint a second one that was much closer to home. ...> Full Article |
 | Judi Provencal is star-struck, but not so much by the glitz and glam of Hollywood. ...> Full Article |
 | scientists are designing a satellite-based observatory that they say could for the first time provide a sensitive survey of the entire sky to search for planets outside the solar system that appear to cross in front of bright stars. The system could rapidly discover hundreds of planets similar to the Earth. ...> Full Article |
Extraordinary event could have been witnessed with the naked eye
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 | Predicting the behavior of a sunspot cycle is fairly reliable once the cycle is well underway (about 3 years after the minimum in sunspot number occurs. Prior to that time the predictions are less reliable but nonetheless equally as important. Planning for satellite orbits and space missions often require knowledge of solar activity levels years in advance. ...> Full Article |
Study provides clues about the formation of Earth-like planets
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 | New Studies May Vindicate 300-Year-Old Astronomical 'Mistake' ...> Full Article |
 | Mapping the interior of interstellar clouds in great detail ...> Full Article |
 | Astrophysicists are having a heated debate over the wave structure of the Sun's Corona - a debate which may one day influence solar weather forecasting and the theory behind fusion reactors. ...> Full Article |
 | Probing a glowing bubble of gas and dust encircling a dying star, NASA's Hubble Space Telescope reveals a wealth of previously unseen structures. ...> Full Article |
 | An international team of astrophysicists has, for the first time, discovered a star other than the Sun flipping its north and south magnetic poles. ...> Full Article |
 | ESA's Integral has made the first unambiguous discovery of high-energy X-rays coming from a rare massive star at our cosmic doorstep, Eta Carinae. It is one of the most violent places in the galaxy, producing vast winds of electrically-charged particles colliding at speeds of thousands of kilometres per second. ...> Full Article |
New calculations by astronomers predict that the Earth will be swallowed up by the Sun in about 7.6 billion years unless the Earth's orbit can be altered.
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 | Astronomers have discovered that rocky, terrestrial planets might orbit many, if not most, of the nearby sun-like stars in the disk of our galaxy. These new results suggest that worlds with potential for life are more common that we thought. ...> Full Article |
 | Using data from NASA's Chandra X-ray Observatory, scientists have reported the possible detection of a binary star system that was later destroyed in a supernova explosion. The new method they used provides great future promise for finding the detailed origin of these important cosmic events. ...> Full Article |
 | Astronomers calibrate the distance scale of the Universe ...> Full Article |
 | Newborn stars peek out from beneath their natal blanket of dust in this dynamic image of the Rho Ophiuchi star-forming region from NASA's Spitzer Space Telescope. ...> Full Article |
 | A team of astronomers has discovered a neutron star emitting an extended stream of powerful X rays, marking the first time such an extended X-ray jet has been detected originating from any class of object other than black holes. "This discovery shows that the unusual properties of black holes, such as the lack of an actual surface,- may not be required to form powerful X-ray jets, as was previously thought," said Niel Brandt, professor of astronomy and astrophysics, and one of the scientists on the team that made the discovery with NASA's Chandra X-ray Observatory. ...> Full Article |
 | First results from a new NASA-funded scientific instrument at the W. M. Keck Observatory in Hawaii are helping scientists overturn long-standing assumptions about powerful explosions called novae and have produced the first unified model for a nearby nova called RS Ophiuchi. ...> Full Article |
 | VLT decodes the innermost surroundings of a star in the maturing ...> Full Article |
 | A strange and violent fate awaits a white dwarf star that wanders too close to a moderately massive black hole. According to a new study, the black hole's gravitational pull on the white dwarf would cause tidal forces sufficient to disrupt the stellar remnant and reignite nuclear burning in it, giving rise to a supernova explosion with an unusual appearance. Observations of such supernovae could confirm the existence of intermediate-mass black holes, currently the subject of much debate among astronomers. ...> Full Article |
First results from a new NASA-funded scientific instrument at the W. M. Keck Observatory in Hawaii are helping scientists overturn long-standing assumptions about powerful explosions called novae and have produced the first unified model for a nearby nova called RS Ophiuchi.
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A young star is speeding away from the Milky Way so fast that astronomers have been puzzled by where it came from; based on its young age it has traveled too far to have come from our galaxy. Now by analyzing its velocity, light intensity, and for the first time its tell-tale elemental composition, Carnegie astronomers Alceste Bonanos and Mercedes LĂłpez-Morales, and collaborators Ian Hunter and Robert Ryans from Queen's University Belfast have determined that it came from our neighboring galaxy, the Large Magellanic Cloud (LMC). The result suggests that it was ejected from that galaxy by a yet-to-be-observed massive black hole. The research will be published in an upcoming issue of the Astrophysical Journal Letters.
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 | The Ulysses spacecraft today is making a rare flyby of the sun's north pole. Unlike any other spacecraft, Ulysses is able to sample winds at the sun's poles, which are difficult to study from Earth. ...> Full Article |
 | Astronomers have produced a scientific gold mine of detailed, high-quality images of nearby galaxies that is yielding important new insights into many aspects of galaxies, including their complex structures, how they form stars, the motions of gas in the galaxies, the relationship of "normal" matter to unseen "dark matter," and many others. ...> Full Article |
 | University of Arizona astronomers Glenn Schneider, Michael Meyer and J. Serena Kim are among scientists who combined images from the UA-led infrared camera on NASA's Hubble Space Telescope with images from NASA's Spitzer Space Telescope into a spectacular image of a star's dust disk dubbed "The Moth." ...> Full Article |
 | The appearance of a very special solar spot on the sun surface a few days ago, signalled to scientists around the world that a new solar cycle had begun. This solar spot also produced two solar blasts. ...> Full Article |
 | Hundreds of millions - or even billions - of years after planets would have initially formed around two unusual stars, a second wave of planetesimal and planet formation appears to be taking place, UCLA astronomers and colleagues believe. ...> Full Article |
 | The infrared sky is expanding significantly for the world astronomical community with the first world release of data (DR1) from the UKIRT Infrared Deep Sky Survey (UKIDSS). ...> Full Article |
 | The shape of the mysterious cloud of antimatter in the central regions of the Milky Way has been revealed by ESA's orbiting gamma-ray observatory Integral. The unexpectedly lopsided shape is a new clue to the origin of the antimatter. ...> Full Article |
It turns out that our math teachers were right: being able to solve problems without a calculator does come in handy in the "real" world. Two theoretical physicists at Rensselaer Polytechnic Institute have used what they call "pen-and-paper math" to describe the motion of interstellar shock waves - violent events associated with the birth of stars and planets.
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 | A new 11-year cycle of heightened solar activity, bringing with it increased risks for power grids, critical military, civilian and airline communications, GPS signals and even cell phones and ATM transactions, showed signs it was on its way late Thursday when the cycle's first sunspot appeared in the sun's Northern Hemisphere, NOAA scientists said. ...> Full Article |
 | The first definitive evidence of cosmic dust, important in building planets like our Earth and ultimately ourselves, has been found in the remains of a massive star explosion 11,000 light years away in our own Galaxy. ...> Full Article |
 | Astronomers have found the first indications of highly complex organic molecules in the disk of red dust surrounding a distant star. The eight-million-year-old star, known as HR 4796A, is inferred to be in the late stages of planet formation, suggesting that the basic building blocks of life may be common in planetary systems. ...> Full Article |
 | An international team of physicists, including University of Oregon scientists, has concluded that last February's intense burst of gamma rays possibly coming from the Andromeda Galaxy lacked a gravitational wave. That absence, they say, rules out an initial interpretation that the burst came from merging neutron stars or black holes within Andromeda. ...> Full Article |
 | New observations from Suzaku, a joint Japanese Aerospace Exploration Agency (JAXA) and NASA X-ray observatory, have challenged scientists' conventional understanding of white dwarfs. Observers had believed white dwarfs were inert stellar corpses that slowly cool and fade away, but the new data tell a completely different story. ...> Full Article |
 | An international team of astronomers, led by Professor Svetlana Berdyugina of ETH Zurich's Institute of Astronomy, has for the first time ever been able to detect and monitor the visible light that is scattered in the atmosphere of an exoplanet. ...> Full Article |
 | Astronomers have found the best evidence yet of matter spiraling outward from a young, still-forming star in fountain-like jets. Due to the spiral motion, the jets help the star to grow by drawing angular momentum from the surrounding accretion disk. ...> Full Article |
 | A team of astronomers at Penn State and Caltech has discovered a cosmic explosion that seems to have come from the middle of nowhere -- thousands of light-years from the nearest galaxy-sized collection of stars, gas and dust. This "shot in the dark" is surprising because the type of explosion, a long-duration gamma-ray burst (GRB), is thought to be powered by the death of a massive star. ...> Full Article |
 | Astronomers have at last found definitive evidence that the universe's first dust – the celestial stuff that seeded future generations of stars and planets – was forged in the explosions of massive stars. ...> Full Article |
 | Using observations from ESO's VLT, astronomers were able for the first time to reconstruct the site of a flare on a solar-like star located 150 light years away. The study of this young star, nicknamed 'Speedy Mic' because of its fast rotation, will help scientists better understand the youth of our Sun. ...> Full Article |
| A team of astronomers has discovered a cosmic explosion that seems to have come from the middle of nowhere—thousands of light-years from the nearest galaxy-sized collection of stars, gas, and dust. ...> Full Article |
 | A furious rate of star formation discovered in a distant galaxy shows that galaxies in the early universe developed either much faster or in a different way from what astronomers have thought. ...> Full Article |
Astronomers simulate the formation and disintegration of star cluster
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The first stars to form in the early universe may have been "dark stars" fueled by an altogether different engine than the stars visible in the night sky now, according to a team of physicists that includes professor Katherine Freese of the University of Michigan.
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 | The Sun is minimally active right now, but this quiet state of affairs won't last for long. Over the next few years, the number of solar flares and eruptions known as coronal mass ejections will increase until reaching solar maximum in 2011 or 2012. Such eruptions can impact Earth, disrupting satellites, communications, and even power grids. Some predict the next solar cycle will be the most intense in 50 years. As a result, scientists are striving to understand the mechanism behind solar eruptions in hopes of eventually being able to predict them in a space "weather forecast." ...> Full Article |
 | A dwarf star with a surprisingly magnetic personality and a huge hot spot covering half its surface area is showing astronomers that life as a cool dwarf is not necessarily as simple and quiet as they once assumed. ...> Full Article |
 | Planetary scientists at UCL have identified the point at which a star causes the atmosphere of an orbiting gas giant to become critically unstable, as reported in this week's Nature (December 6). Depending upon their proximity to a host star, giant Jupiter-like planets have atmospheres which are either stable and thin, or unstable and rapidly expanding. This new research enables us to work out whether planets in other systems are stable or unstable by using a three dimensional model to characterise their upper atmospheres. ...> Full Article |
 | Spectacular images and data from the Hinode mission have shed new light on the Sun's magnetic field and the origins of solar wind, which can disrupt power grids, satellites and communications on Earth. ...> Full Article |
 | Tom Nichols, a mechanical engineer at Lockheed Martin in Palo Alto, works on the HMI. ...> Full Article |
 | University of British Columbia astronomer Harvey Richer and UBC graduate student Saul Davis have discovered that white dwarf stars are born with a natal kick, explaining why these smoldering embers of Sun-like stars are found on the edge rather than at the centre of globular star clusters. ...> Full Article |
 | Dark Matter in Newborn Universe Doused Earliest Stars ...> Full Article |
 | Astronomers have discovered white dwarf stars with pure carbon atmospheres. These stars possibly evolved in a sequence astronomers didn't know before. ...> Full Article |
 | A supernova observed last year was so bright--about 100 times as luminous as a typical supernova--that it challenged the theoretical understanding of what causes supernovae. But Stan Woosley, professor of astronomy and astrophysics at the University of California, Santa Cruz, had an idea that he thought could account for it--an extremely massive star that undergoes repeated explosions. When Woosley and two colleages worked out the detailed calculations for their model, the results matched the observations of the supernova known as SN 2006gy, the brightest ever recorded. ...> Full Article |
 | Rocky terrestrial planets, perhaps like Earth, Mars or Venus, appear to be forming or to have recently formed around a star in the Pleiades ("seven sisters") star cluster, the result of "monster collisions" of planets or planetary embryos. ...> Full Article |
 | A NASA satellite designed, built and controlled by the University of Colorado at Boulder is expected to help scientists resolve wide-ranging predictions about the coming solar cycle peak in 2012 and its influence on Earth's warming climate, according to the chief scientist on the project. ...> Full Article |
A new astronomical study adds an unexpected twist to the complications: stars well-endowed with gold and other heavy elements have fewer stellar companions. Researchers believe their discovery could help track down Earth-like planets outside of our solar system.
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 | A team of American astronomers announced the discovery of a record-breaking fifth planet around the nearby star 55 Cancri, making it the only star aside from the sun known to have five planets. ...> Full Article |
 | As reservoirs of valuable information go, nothing beats the sun. This sphere of heat and energy holds 99.9 percent of the solar system, saved in all original proportions after planets and meteorites formed. Analyzing the mix of hydrogen, oxygen and noble gases found in the sun can answer one of the biggest questions of the universe: How did our solar system evolve? ...> Full Article |
 | All five of the planets visible with the unaided eye will be on display during November nights, but the special attraction will be Mars. The red planet is approaching Earth in its orbit, and it won't appear as large again for another nine years. ...> Full Article |
 | Stars always evolve in the universe in large groups, known as clusters. Astronomers distinguish these formations by their age and size. The question of how star clusters are created from interstellar gas clouds and why they then develop in different ways has now been answered by researchers at the Argelander Institute for Astronomy at the University of Bonn with the aid of computer simulations. The scientists have solved -- at least at a theoretical level -- one of the oldest astronomical puzzles, namely the question of whether star clusters differ in their internal structure. ...> Full Article |
 | Exploding stars that light the way for research on dark energy aren't as powerful or bright, on average, as they once were. ...> Full Article |
Stars in dwarf spheroidal galaxies behave in a way that suggests the galaxies are utterly dominated by dark matter, astronomers have found.
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 | A spectacular new image shows how complex a star's afterlife can be. ...> Full Article |
 | In a landmark test flight a team of research partners this month successfully launched a solar telescope to an altitude of 120,000 feet, borne by a balloon larger than a Boeing 747 jumbo jet. The test clears the way for long-duration polar balloon flights beginning in 2009 that will capture unprecedented details of the Sun's surface. ...> Full Article |
 | Astronomers have located an exceptionally massive black hole in orbit around a huge companion star. This result has intriguing implications for the evolution and ultimate fate of massive stars. ...> Full Article |
Scientists have helped to design and create a pioneering instrument that will provide clues that could help to understand the origins of the elements in the Universe.
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 | Recent observations from NASA and Japanese X-ray observatories have helped clarify one of the long-standing mysteries in astronomy -- the origin of cosmic rays. ...> Full Article |
 | Astronomers are pointing to three nearby stars they say may hold "embryonic planets"—a missing link in planet-formation theories. ...> Full Article |
 | Venus, Saturn and Regulus will dance a pas de trois low in the eastern sky an hour before sunrise during October, with the crescent moon joining them on Oct 7. ...> Full Article |
An international team of astronomers is one step closer to answering the question, "Will the world end with a bang or a whimper?"
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 | Astronomers have succeeded in tracing the magnetic web that binds newly forming stars to their surrounding gas and dust. ...> Full Article |
 | A team of astronomers has discovered a number of stars forming in a section of our universe that is not normally conducive to the birth of stars. ...> Full Article |
 | Astronomers have pinpointed the origin of powerful bursts from nature's most magnetic objects. ...> Full Article |
 | The colorful, intricate shapes in these NASA Hubble Space Telescope images reveal how the glowing gas ejected by dying Sun-like stars evolves dramatically over time. ...> Full Article |
 | Astronomers played a key role in discovering one of the most bizarre objects in space: a star "skeleton" of very low mass that is orbiting and being slowly consumed by a pulsar, or remains of a second massive star, that is itself spinning faster than a kitchen blender. ...> Full Article |
 | The universe's earliest stars may hold clues to the nature of dark matter, the mysterious stuff that makes up most of the universe's matter but doesn't interact with light, cosmologists report in the 14 September issue of the journal Science. ...> Full Article |
 | Cluster data has helped provide scientists with a new view of magnetospheric processes, challenging existing theories about magnetic substorms that cause aurorae and perturbations in GPS signals. ...> Full Article |
 | A large team of astronomers, including scientists from the University of Delaware and Mt. Cuba Observatory, has announced that at least one planet in the universe has survived the violent events that accompany the late stages of a star's life cycle. ...> Full Article |
 | Astronomers have observed neon in disks of dust and gas swirling around sunlike stars for the first time. ...> Full Article |
 | A team of astronomers led by Cambridge University have taken pictures of the stars that are sharper than anything produced by the Hubble telescope, at 50 thousandths of the cost. ...> Full Article |
 | New, detailed observations of a supernova show evidence that a white dwarf star "fed" off a red giant to gain the critical mass needed for explosion. ...> Full Article |
 | As the summer sun recedes, it makes way for the autumn stars sweeping in. Many belong to water constellations like Pisces, Capricornus, and Aquarius, which are now chasing the Milky Way westward. Late evenings are graced by a furiously brightening Mars, and approaching morning sees Venus soar to a lofty throne, there to preside until the break of day. ...> Full Article |
 | Using European and Japanese/NASA X-ray satellites, astronomers have seen Einstein's predicted distortion of space-time around three neutron stars, and in doing so they have pioneered a groundbreaking technique for determining the properties of these ultradense objects. ...> Full Article |
 | NASA's Galaxy Evolution Explorer has spotted an amazingly long comet-like tail behind a star streaking through space at supersonic speeds. "I was shocked when I first saw this completely unexpected, humongous tail trailing behind a well-known star," said Caltech's Christopher Martin. ...> Full Article |
 | Using NASA's Swift satellite, McGill University and Penn State astronomers have identified an object that is likely one of the closest neutron stars to Earth -- and possibly the closest. ...> Full Article |
 | The chemical fingerprint of a burned-out star indicates that Earth-like planets may not be rare in the universe and could give clues to what our solar system will look like when our sun dies and becomes a white dwarf star some five billion years from now. ...> Full Article |
 | Using ESO's Very Large Telescope Interferometer, astronomers from France and Brazil have detected a huge cloud of dust around a star. This observation is further evidence for the theory that such stellar puffs are the cause of the repeated extreme dimming of the star. ...> Full Article |
 | A planet orbiting a giant red star has been discovered by an astronomy team led by Penn State's Alex Wolszczan, who in 1992 discovered the first planets ever found outside this solar system. The new discovery is helping astronomers to understand what will happen to the planets in this solar system when the sun becomes a red-giant star, expanding so much that its surface will reach as far as Earth's orbit. ...> Full Article |
 | A team of European and American astronomers has announced the discovery of the best evidence yet for the nature of the star systems that explode as type Ia supernovae. The team obtained a unique set of observations with the European Southern Observatory's Very Large Telescope and the Keck I 10-meter telescope in Hawaii. ...> Full Article |
 | University of Arizona astronomers who are probing the oxygen-rich environment around a supergiant star with one of the world's most sensitive radio telescopes have discovered a score of molecules that include compounds needed for life. ...> Full Article |
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