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Latest Blue straggler Stories

European Southern Observatory Astronomers Capture New Image Of 47 Tucanae
2013-01-10 15:33:15

[Watch the Video: A close look at the globular star cluster 47 Tucanae] redOrbit Staff & Wire Reports - Your Universe Online Using their Visible and Infrared Survey Telescope for Astronomy (VISTA), astronomers at the European Southern Observatory (ESO) have managed to capture a new infrared image of 47 Tucanae, the second most massive globular cluster in the galaxy. The picture, which was released by the ESO on Thursday, depicts the cluster “in striking detail,” the...

Star Clusters Can Look Younger Than They Are
2012-12-19 13:46:31

Lee Rannals for redOrbit.com - Your Universe Online Just as your lifestyle can cause you to show your age, the same is true for star clusters, according to a study published in the journal Nature. Astronomers using the Hubble Space Telescope have found that some globular clusters are still young at heart, despite being relics of the early Universe. Globular clusters are spherical collections of stars that are held tightly together by their mutual gravitational attraction....

Globular Star Cluster NGC 6362
2012-10-31 06:19:57

[ Video 1 ] | [ Video 2 ] European Southern Observatory Photo Release This colorful view of the globular star cluster NGC 6362 was captured by the Wide Field Imager attached to the MPG/ESO 2.2-meter telescope at ESO´s La Silla Observatory in Chile. This new picture, along with a new image of the central region from the NASA/ESA Hubble Space Telescope, provide the best view of this little-known cluster ever obtained. Globular clusters are mainly composed of tens of thousands of very...

2011-10-20 04:23:36

Astronomers discover how mysterious stars stay so young Mysterious “blue stragglers” are old stars that appear younger than they should be: they burn hot and blue. Several theories have attempted to explain why they don´t show their age, but, until now, scientists have lacked the crucial observations with which to test each hypothesis. Armed with such observational data, two astronomers from Northwestern University and the University of Wisconsin-Madison report that a...

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2011-05-26 09:56:00

Cheryl Gundy, STSCI NASA's Hubble Space Telescope has found a rare class of oddball stars called blue stragglers in the hub of our Milky Way, the first detected within our galaxy's bulge. Blue stragglers are so named because they seemingly lag behind in the aging process, appearing younger than the population from which they formed. While they have been detected in many distant star clusters, and among nearby stars, they never have been seen inside the core of our galaxy. It is not clear how...

2011-05-25 13:32:00

WASHINGTON, May 25, 2011 /PRNewswire-USNewswire/ -- NASA's Hubble Space Telescope has found a rare class of oddball stars called blue stragglers in the hub of our Milky Way, the first detected within our galaxy's bulge. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Blue stragglers are so named because they seemingly lag behind in the aging process, appearing younger than the population from which they formed. While they have been detected in many distant star clusters, and...

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2009-12-23 14:20:00

Using the NASA/ESA Hubble Space Telescope, astronomers have uncovered two distinct kinds of "rejuvenated" stars in the globular cluster Messier 30. A new study shows that both stellar collisions and a process sometimes called vampirism are behind this cosmic "face lift". The scientists also uncover evidence that both sorts of blue stragglers were produced during a critical dynamical event (known as "core collapse") that occurred in Messier 30 a few billion years ago. Stars in globular...

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2009-12-23 14:15:55

For almost 50 years, astronomers have puzzled over the youthful appearance of stars known as blue stragglers. Blue stragglers are the timeworn Hollywood starlets of the cosmos: They shine brightly, they are older than they appear, and they have, disconcertingly, gained mass at a late stage of life. "These blue, luminous stars should have used up their hydrogen fuel and flamed out long ago," explains Robert Mathieu, a University of Wisconsin-Madison astronomer. "Yet they are still here. By...

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2009-01-14 16:01:46

Researchers have discovered that the mysterious overweight stars known as blue stragglers are the result of "Ëœstellar cannibalism' where plasma is gradually pulled from one star to another to form a massive, unusually hot star that appears younger than it is. The process takes place in binary stars "“ star systems consisting of two stars orbiting around their common centre of mass. This helps to resolve a long standing mystery in stellar evolution. The research, which is part...

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2008-12-04 09:30:00

Like a whirl of shiny flakes sparkling in a snow globe, Hubble catches an instantaneous glimpse of many hundreds of thousands of stars moving about in the globular cluster M13, one of the brightest and best-known globular clusters in the northern sky. This glittering metropolis of stars is easily found in the winter sky in the constellation Hercules and can even be glimpsed with the unaided eye under dark skies. M13 is home to over 100,000 stars and located at a distance of 25,000...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.