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2ac38890147a793a26024b5f1a1c95cf1
2009-08-31 12:05:00

 As scientists attempt to learn more about how galaxies evolve, an open question has been whether collisions with our dwarf galactic neighbors will one day tear apart the disk of the Milky Way.That grisly fate is unlikely, a new study now suggests.While astronomers know that such collisions have probably occurred in the past, the new computer simulations show that instead of destroying a galaxy, these collisions "puff up" a galactic disk, particularly around the edges, and produce...

2009-04-30 16:02:58

A U.S. astronomer says he discovered a galaxy in which gas is distributed over a much larger area than researchers expected to find. Macalester College Professor John Cannon said the giant disk dwarf galaxy he discovered has the largest size difference between stars and gas of any known galaxy. That finding, he said, is important for furthering the understanding of how galaxies form and how they remain stable over time. Cannon said data from the Kitt Peak National Observatory in Arizona and...

2008-11-24 16:17:40

Violent intergalactic collision created the bright pinwheels and broad star sweeps typical in disk galaxies such as the Milky Way, U.S. researchers found. The multiinstitutional team's simulated galaxy formation suggests disk galaxies likely began as flat, centralized star clusters, the University of Pittsburgh, one of the institutions, said in a news release. Smaller galaxies ripped through these disks billions of years ago, casting disk stars outward into the galaxies' current shapes, their...

634d305904da15b9557ddb17593b92941
2008-11-21 14:25:00

Findings published in "The Astrophysical Journal" challenge existing theory about the formation of such galaxies as the Milky Way The bright pinwheels and broad star sweeps iconic of disk galaxies such as the Milky Way might all be the shrapnel from massive, violent collisions with other galaxies and galaxy-size chunks of dark matter, according to a multi-institutional project involving the University of Pittsburgh. Published in the Nov. 20 edition of "The Astrophysical Journal," the findings...

7637195beef1ff0efdc0d6f1c9872b891
2008-10-10 11:00:00

Astronomers have used ESO's Very Large Telescope Interferometer to conduct the first high resolution survey that combines spectroscopy and interferometry on intermediate-mass infant stars. They obtained a very precise view of the processes acting in the discs that feed stars as they form. These mechanisms include material infalling onto the star as well as gas being ejected, probably as a wind from the disc. Infant stars form from a disc of gas and dust that surrounds the new star and, later,...

b33ed249cf6994c4b9c1f965f88fb9e81
2006-03-17 08:20:00

LOS ANGELES -- It's official: When the first HD-DVD players, from Toshiba, begin arriving in stores this month, there won't be any software for at least another three weeks. Warner Home Video said Thursday that it has pushed back the release dates of its initial slate of high-definition DVD titles to April 18 from March 28. The studio also has scaled back its launch to just three titles: "Million Dollar Baby," "The Phantom of the Opera" and "The Last Samurai." Stephen Nickerson, the studio's...

6e2dd805f8ac7f3d5e93d460cd3af66f1
2005-12-14 08:30:00

ESA -- Astronomers using ESA's XMM-Newton observatory have found very hot gaseous haloes around a multitude of spiral galaxies similar to our Milky Way galaxy. These 'ghost-like' veils have been suspected for decades but remained elusive until now. Galaxy 'haloes' are often seen in so-called 'starburst' galaxies, the locations of concentrated star formation, but the discovery of high-temperature haloes around non-starburst spiral galaxies opens the door to new types of measurements once...


Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.