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Latest Wolf-Rayet star Stories

c7c451d7a4f3c0d79f3b1f5082e017681
2009-08-26 07:20:00

Today ESO has released a new image of the Trifid Nebula, showing just why it is a firm favorite of astronomers, amateur and professional alike. This massive star factory is so named for the dark dust bands that trisect its glowing heart, and is a rare combination of three nebula types, revealing the fury of freshly formed stars and presaging more star birth. Smoldering several thousand light-years away in the constellation of Sagittarius (the Archer), the Trifid Nebula presents a compelling...

da07b135da2628c783099df8c58e1c6b1
2009-08-19 08:55:00

New images released today by ESO delve into the heart of a cosmic cloud, called RCW 38, crowded with budding stars and planetary systems. There, young, titanic stars bombard fledgling suns and planets with powerful winds and blazing light, helped in their devastating task by short-lived, massive stars that explode as supernovae. In some cases, this energetic onslaught cooks away the matter that may eventually form new solar systems. Scientists think that our own Solar System emerged from such...

d801ecaa771784c4141ce662c5033b831
2009-06-10 13:24:13

Astronomers have at last uncovered newborn stars at the frenzied center of our Milky Way galaxy. The discovery was made using the infrared vision of NASA's Spitzer Space Telescope. The heart of our spiral galaxy is cluttered with stars, dust and gas, and at its very center, a supermassive black hole. Conditions there are harsh, with fierce stellar winds, powerful shock waves and other factors that make it difficult for stars to form. Astronomers have known that stars can form in this chaotic...

f1472e4f99e6e8bb2503c110bea37c6d
2009-06-01 07:38:13

While humans are still struggling to get rid of unwanted carbon it appears that the heavens are really rather good at it. New research by astrophysicists at the University of Warwick has discovered that a mystery stellar explosion recorded in 2006 may have marked the unusual death of an equally unusually carbon-rich star. The strange object known as SCP 06F6 was first noted in 2006 by supernovae researchers in the US taking images with the Hubble Space Telescope, seeing it appearing out of...

c2b2766eaf48c8f367e2ec53bc7d873c1
2009-03-20 08:05:00

Where do supernovae come from? Astronomers have long believed they were exploding stars, but by analyzing a series of images, researchers from the Dark Cosmology Centre at the Niels Bohr Institute, University of Copenhagen and from Queens University, Belfast have proven that two dying red supergiant stars produced supernovae. The results are published in the prestigious scientific journal, Science. A star is a large ball of hot gas and in its incredibly hot interior hydrogen atoms combine to...

7474bc0055dddda5036d0565bfaa77621
2009-02-24 09:39:37

On long, dark winter nights, the constellation of Orion the Hunter dominates the sky. Within the Hunter's sword, the Orion Nebula swaddles a cluster of newborn stars called the Trapezium. These stars are young but powerful, each one shining with the brilliance of 100,000 Suns. They are also massive, containing 15 to 30 times as much material as the Sun. Where did the Trapezium stars come from? The question is not as simple as it seems. When it comes to the theory of how massive stars form,...

2afde7c250e47e5f541d32507eefe4221
2009-01-16 00:45:00

ITHACA, N.Y. "“ A Cornell-led team of astronomers has observed dust forming around a dying star in a nearby galaxy, giving a glimpse into the early universe and enlivening a debate about the origins of all cosmic dust. The findings are reported in the Jan. 16 issue of the journal Science (Vol. 323, No. 5912). Cornell research associate Greg Sloan led the study, which was based on observations with NASA's Spitzer Space Telescope. The researchers used Spitzer's Infrared Spectrograph,...

a46dee078cf669b2c572ca7eb68aaf901
2009-01-16 09:31:42

SANTA CRUZ, CA -- Theorists have long wondered how massive stars--up to 120 times the mass of the Sun--can form without blowing away the clouds of gas and dust that feed their growth. But the problem turns out to be less mysterious than it once seemed. A study published this week by Science shows how the growth of a massive star can proceed despite outward-flowing radiation pressure that exceeds the gravitational force pulling material inward. The new findings also explain why massive stars...

bba340bb14889eb02046607f5e83fb541
2008-12-08 13:20:00

A new image from NASA's Spitzer Space Telescope shows a turbulent star-forming region, where rivers of gas and stellar winds are eroding thickets of dusty material. The picture provides some of the best examples yet of the ripples of gas, or bow shocks, that can form around stars in choppy cosmic waters. "The stars are like rocks in a rushing river," said Matt Povich of the University of Wisconsin, Madison. "Powerful winds from the most massive stars at the center of the cloud produce a large...

f7e1ff3c2097b576ba6731f261041e901
2008-11-25 08:30:00

Two of our galaxy's most massive stars, until recently shrouded in mystery, have been viewed by the NASA/ESA Hubble Space Telescope, unveiling greater detail than ever before. The image shows a pair of colossal stars, WR 25 and Tr16-244, located within the open cluster Trumpler 16. This cluster is embedded within the Carina Nebula, an immense cauldron of gas and dust that lies approximately 7500 light-years from Earth. The Carina Nebula contains several ultra-hot stars, including these two...


Latest Wolf-Rayet star Reference Libraries

6_d67b2db586c7facec8388b5df78e57912
2004-10-19 04:45:42

Star -- A star is a self-gravitating sphere of plasma in hydrostatic equilibrium that generates energy in its interior through the process of nuclear fusion. Energy from this process radiates into space as electromagnetic radiation and neutrinos. Star formation and evolution As learned by star formation astronomers, stars are born in molecular clouds, regions of higher density of matter, and form by gravitational instability inside those clouds. High mass stars illuminate powerfully...

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Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'