Stars News

Ancient Milky Way Stars Contain Clues About The Early Universe

November 12, 2015

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Ancient Milky Way Stars Contain Fingerprints from the Very Early Universe

An international team of astronomers has discovered some of the oldest stars in the Milky Way. These stars could contain vital clues about the early Universe, including an indication of how the first stars died. These stars, which have been at the very center of the Milky Way for billions of years, contain extremely low […]

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Astronomers Reveal How Stars Reach Masses of More Than a Hundred Times Our Sun

November 3, 2015

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Astronomers Reveal How Stars Grow into Heavyweights

A team of astronomers has discovered a stable structure around one of the most massive, newly forming stars in our galaxy, revealing how some stars manage to reach masses of more than a hundred times that of our Sun. Stars count lightweights and heavyweights among their number. All are born in clouds of gas and […]

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Synchrotron Emission Will Allow Astronomers to Find Stars That No One Has Seen Before

September 22, 2015

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New Technique Will Allow Astronomers to Find Stars That No One Has Seen Before

Astronomers believe that radio waves coming from supersonic stars will help them find stars that no one has seen before. The center of our Milky Way galaxy is a mysterious place. Not only is it thousands of light-years away, it’s also cloaked in so much dust that most stars within are rendered invisible. Harvard researchers […]

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Two Massive Stars with Magnetic Fields Discovered in Binary System Epsilon Lupi

September 13, 2015

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Astronomers Discover Two Massive Stars with Magnetic Fields in a Binary System

In a newly published study, astronomers reveal that the two giant stars in binary system Epsilon Lupi have magnetic fields. A Canadian PhD student has discovered a unique object – two massive stars with magnetic fields in a binary system. Matt Shultz of Queen’s University, Ontario, Canada found the system – Epsilon Lupi – and […]

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Astronomers Reach an Important Milestone in the Study of Cluster Mergers

September 8, 2015

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Image of the Sausage Merging Cluster CIZA J2242.8+5310

Astronomers reach an important milestone in the study of cluster mergers, showing that member galaxies are still gas rich and thus can form stars and stimulate the nuclear engine for a long time. Most galaxies are members of a cluster, a grouping of several to thousands of galaxies. Our Milky Way, for example, is a […]

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White Dwarf PG1149+057 Displays ‘Irregular Heartbeats’

August 30, 2015

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White Dwarf PG1149+057 Displays Arrhythmic Massive Outbursts

Using Kepler data, a team of astronomers has observed a white dwarf star displaying massive arrhythmic outbursts, which broke the star’s regular pulse and significantly heated up its surface for many hours. Some dying stars suffer from ‘irregular heartbeats’, research led by astronomers at the University of Warwick has discovered. The research confirms rapid brightening […]

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Hubble Reveals the Secrets of the Quintuplet Cluster

July 13, 2015

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Hubble Views the Quintuplet Cluster

This newly released Hubble image shows the Quintuplet Cluster, which is located 100 light-years from the center of our galaxy. Although this cluster of stars gained its name due to its five brightest stars, it is home to hundreds more. The huge number of massive young stars in the cluster is clearly captured in this […]

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Astronomers Solve Mystery of Unusually Hot Blue Stars

June 23, 2015

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Artist's impression of a protostellar disc disrupted by a collision.

New research by an international team of astronomers solves the mystery of hot blue stars, which despite their smaller size are especially luminous. Astronomers have solved a mystery over small, unusually hot blue stars, 10 times hotter than our Sun, that are found in the middle of dense star clusters. The international team found the […]

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Hubble Uncovers New Clues about a Hefty, Rapidly Aging Star

May 22, 2015

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Hubble Observations of NaSt1

Using the Hubble Space Telescope, a team of astronomers has uncovered surprising new clues about a hefty, rapidly aging star whose behavior has never been seen before in our Milky Way galaxy. Nicknamed it “Nasty 1,” a play on its catalog name of NaSt1, the star may represent a brief transitory stage in the evolution […]

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Astronomers Detect Magnetic Fields on Solar-Type Stars

December 12, 2014

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Astronomers Study the Magnetic Fields Stars

A team of astronomers that has just completed the most extensive polarization survey of stars to date, detecting magnetic fields on sixty-seven stars with twenty-one of them being classified as solar-type. That is about four times as many solar-type stars as had been previously classified. The Sun rotates slowly, about once every 24 days at […]

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Astronomers Explore the First Three Billion Years of Stars

October 3, 2014

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The First Three Billion Years of Stars

Using the Hubble Space Telescope and the Spitzer Space Telescope, a team of astronomers studied the first few billion years of the universe to determine the distribution of stellar masses and the star formation rates in galaxies at epochs as early as about 800 million years after the big bang. In the last decade, the […]

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Astronomers Use Gyrochronology to Reveal the Ages of 22 Sun-Like Stars

July 10, 2014

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New Technique Measures the Age of a Star

Using a new technique for measuring the age of a star using its spin, astronomers reveal the gyrochronological ages of 22 Sun-like stars. Cambridge, Massachusetts – Defining what makes a star “Sun-like” is as difficult as defining what makes a planet “Earth-like.” A solar twin should have a temperature, mass, and spectral type similar to […]

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Hubble Views Stars’ Clockwork Motion in Nearby Galaxy

February 19, 2014

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Hubble Views Stars Clockwork Motion

A team of astronomers used the Hubble Space Telescope measure the average motion of hundreds of individual stars over a seven-year period, revealing for the first time the rotation rate of a galaxy based on the clock-like movement of its stars. Using the sharp-eyed NASA Hubble Space Telescope, astronomers have for the first time precisely […]

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Astronomers Discover New Class of “Hypervelocity Stars”

January 10, 2014

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Astronomers Discover a New Class of Stars

A newly published study details the discovery of a new class of “hypervelocity stars” – stars that are moving at speeds of more than a million miles per hour relative to the Milky Way and that are fast enough to escape gravitational grasp of the Milky Way. An international team of astronomers has discovered a […]

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Computer Simulations Show How Stars at the Center of the Milky Way Move

November 30, 2013

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Study Reveals How Stars Move at the Center of the Galaxy

In a newly published study, researchers from the University of Rochester use computer simulations to show how the stars at the center of the Milky Way move in a peanut-shell shaped orbits. Two months ago astronomers created a new 3D map of stars at the center of our Galaxy (the Milky Way), showing more clearly […]

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New Survey Maps Where Stars Are Born

October 14, 2013

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New Survey Maps Where Stars Are Born

Astronomers have completed the largest-ever survey of dense gas clouds in the Milky Way, cataloging and mapping more than 6,000 gas clouds and allowing astronomers to better understand the earliest phases of star formation. A team of astronomers led by Yancy Shirley at the University of Arizona’s Steward Observatory has completed the largest-ever survey of […]

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A Jet of Energetic Particles Reveals How Stars Begin Their Final Transformation

September 17, 2013

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Magnetic Jet Reveals How Stars BeginTheir Final Transformation

A newly discovered jet of high-energy particles emanating from a dying star has helped scientists better understand how stars begin their final transformation. An international team of astronomers have for the first time found a jet of high-energy particles emanating from a dying star. The discovery, by a collaboration of scientists from Sweden, Germany and […]

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Hubble Views a Giant, Smoldering Star

September 16, 2013

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New Hubble Image of Star HD 184738

This newly released Hubble image shows the star HD 184738. This new image, snapped by NASA/ESA Hubble Space Telescope, shows the star HD 184738, also known as Campbell’s hydrogen star. It is a Wolf-Rayet star — an evolutionary stage for stars with a mass of over 20 times that of our Sun, when they are […]

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