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Clash of clusters provides new dark matter clue
August 28, 2008
A powerful collision between galaxy clusters has been captured by the NASA/ESA Hubble Space Telescope and NASA's Chandra X-ray Observatory. This clash of clusters provides striking evidence for dark matter and insight into its properties. New Hubble and Chandra observations of the cluster known as MACSJ0025.4-1222 indicate that a titanic collision has separated dark from ordinary matter. This provides independent confirmation of a similar effect detected previously in a target dubbed the Bullet Cluster, showing that the Bullet Cluster is not an anomalous case.
MACSJ0025 formed after an enormously energetic collision between two large clusters. Using visible-light images from Hubble, astronomers were able to infer the total mass distribution - dark and ordinary matter. Hubble was used to map the dark matter (coloured in blue) using a technique known as gravitational lensing. Chandra data enabled the astronomers to accurately map the ordinary matter, mostly in the form of hot gas, which glows brightly in X-rays (shown in pink). As the two clusters that formed MACSJ0025 (each almost a whopping quadrillion times the mass of our Sun) merged at speeds of millions of kilometres per hour, hot gas in the two clusters collided and slowed down, but the dark matter passed right through this smash-up. The separation between material shown in pink and blue therefore provides observational evidence for dark matter and supports the view that dark matter particles interact with each other only very weakly or not at all, apart from the pull of gravity. The international team of astronomers in this study was led by Maruöa Bradač of the University of California, Santa Barbara, USA, and Steve Allen of the Kavli Institute for Particle Astrophysics and Cosmology at Stanford University and the Stanford Linear Accelerator Center (SLAC), USA. Their results will appear in an upcoming issue of The Astrophysical Journal. http://www.spacetelescope.org/images/screen/heic0818a.jpgHubble Information Centre
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Dark Matter
Starring: Meryl Streep, Aidan Quinn, Ye Liu, Erick Avari Directed By: Shi-Zheng Chen
Studio: Uni Dist Corp. (mca) Release Date: 04/14/2009 Run time: 90 minutes Rating: R
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Dark Matter Blue Raspberry 2.6 lbs
by MHP
DARK MATTER takes a quantum leap forward into a new dimension of post-workout muscle growth called the ANABOLIC AXIS. The Anabolic Axis is the time and point at which insulin levels simultaneously peak with amino acids, creatine and glycogen transport into muscle tissue during the critical 1 hour period immediately after your workout. Dark Matter is the first and only supplement to employ a new technology called Precision Nutrient Infusion, which allows for this synergistic anabolic reaction to occur at the Anabolic Axis. In order to achieve this major breakthrough, MHP scientists bio-engineered new compounds and a revolutionary High Velocity Nano-Physics Technology. These new developments have rendered all post-workout creatines, whey protein/high carbohydrate combos and all other...
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Dark Side of the Universe: Dark Matter, Dark Energy, and the Fate of the Cosmos
by Iain Nicolson (Author)
Once we thought the universe was filled with shining stars, dust, planets, and galaxies. We now know that more than 98 percent of all matter in the universe is dark. It emits absolutely nothing yet bends space and time; keeps stars speeding around galaxies; and determines the fate of the universe. But dark matter is only part of the story. Scientists have recently discovered that the expansion of the universe is speeding up, driven by a mysterious commodity called dark energy. Depending on what dark matter and energy happen to be, our seemingly quiet universe could end its days in a Big Rip, tearing itself apart, or a Big Crunch, collapsing down to a universe the size of nothing, ready to be reincarnated in a Big Bang once again. For the general reader and armchair...
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Dark Matter: A Century of Speculative Fiction from the African Diaspora
by Sheree R. Thomas (Editor)
Like The Norton Anthology of Black Literature, this title introduces black SF, fantasy, and speculative fiction writers to the generations of readers who have not had the opportunity to explore the extraordinary scope and diversity among African-American writers in one volume. With approximately 40 short stories by Steven Barnes, Octavia E. Butler, Samuel R. Delany, Tananarive Due, and many more, this collection is a powerful treasury that will appeal to the culturally diverse audience of science fiction readers.
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![Dark Matter [ NON-USA FORMAT, PAL, Reg.4 Import - Australia ]](http://ecx.images-amazon.com/images/I/51udQYUXSUL._SL160_.jpg)
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Dark Matter [ NON-USA FORMAT, PAL, Reg.4 Import - Australia ]
Directed By: Shi-Zheng Chen Also With: Aidan Quinn (Primary Contributor), Blair Brown (Primary Contributor), Dan Christensen (Primary Contributor), Erick Avari (Primary Contributor), Jeshua De Horta (Primary Contributor), Joe Grifasi (Primary Contributor), Meryl Streep (Primary Contributor), Rob Campbell (Primary Contributor), Sina Amedson (Primary Contributor), Ye Liu (Primary Contributor), CategoryArthouse (Commentary), CategoryUSA (Commentary), Festival Sundance Film Festival (Commentary)
Australia released, PAL/Region 4 DVD:it WILL NOT play on standard US DVD player. You need multi-region PAL/NTSC DVD player to view it in USA/Canada: LANGUAGES: English ( Dolby Digital 2.0 ),ANAMORPHIC WIDESCREEN (1.78:1), SPECIAL FEATURES: Anamorphic Widescreen, Interactive Menu, Photo Gallery, Scene Access,SYNOPSIS: The title of "Dark Matter," a melodrama set in academia, is both a scientific concept and a blunt metaphor. Technically, it refers to a form of matter that makes up most of the universe but can't be directly observed. Applied to human affairs, it evokes the unconscious mind and the hidden, destructive forces within relationships. Specifically, the story, inspired by a tragic incident involving a Chinese student at the University of Iowa in 1991, addresses East-West cultural...
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Dark Matter 2.64lb- fruit punch
by MHP
DARK MATTER takes a quantum leap forward into a new dimension of post-workout muscle growth called the ANABOLIC AXIS. The Anabolic Axis is the time and point at which insulin levels simultaneously peak with amino acids, creatine and glycogen transport into muscle tissue during the critical 1 hour period immediately after your workout. Dark Matter is the first and only supplement to employ a new technology called Precision Nutrient Infusion, which allows for this synergistic anabolic reaction to occur at the Anabolic Axis. In order to achieve this major breakthrough, MHP scientists bio-engineered new compounds and a revolutionary High Velocity Nano-Physics Technology. These new developments have rendered all post-workout creatines, whey protein/high carbohydrate combos and all other...
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Dark Matters: Unifying Matter, Dark Matter, Dark Energy, and the Universal Grid
by Dr. Percy Seymour (Author)
One of the most important unsolved problems of current physics, astronomy, and cosmology is the nature of dark matter and dark energy. These two invisible components of the universe seem to control the behavior of galaxies, clusters of galaxies, and the accelerating expansion of the universe, but we do not know what they are. Dark Matters offers a unified explanation for dark matter and dark energy, and, in doing so, formulates a new theory of ordinary matter. Central to this new theory is the concept of electric lines of force, encased in something called insulating space, which means we are generally not aware of them, just as we are not aware of the currents passing through insulated cables. The essential feature of Dark Matters that sets it apart from similar...
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The Visible Universe: A Visual Journey Through Space and Back in Time. NASA - Hubble Space Telescope
Starring: Super Nova Directed By: David DeMarcos Also With: David DeMarcos (Producer)
NTSC North American FormatUpdated 2009 - Includes: * Some of the most recent 2008/09 HST observations * New Title Menu * Re-encoded with the latest encoders allowing for excellent color and clarity J.B.S Haldane The Universe is not only stranger than we imagine; it is stranger than we can imagine.
The Visible Universe presents a visual journey through space and back in time using the greatest optical instruments ever created in the history of man. The Hubble Space Telescope, SOHO, Trace, Spitzer, and other instruments have afforded us an insight to the farthest reaches of the Cosmos. Carl Sagan The Universe forces those who live in it to understand it. The producer hopes that this progressive music video will entertain and inspire our children to further...
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Dark Matter
by IQ
Dark Matter is the new studio album from England’s legendary IQ. With a career that spans nearly 25 years, IQ remains one of the biggest names in the world of Progressive Rock. Dark Matter marks a new beginning for IQ as this album will be their first US domestic release in nearly 20 years and it is their first for Inside Out Music America. As would be expected from the title, this is a dark, brooding album, bristling with attitude and aggression reminiscent of the band’s early days but Dark Matter also contains moments of great melodic beauty. It is pure progressive rock in all its glory with soaring guitar melodies backed up with the classic sounds of Mellotrons, Moog and Hammond organ and offset by Peter Nicholls’ ever impenetrable lyrics. The classic IQ line-up of Nicholls,...
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Dark Matter
by Brane Science Fiction
Dark matter, the invisible substance that constitutes the bulk of all matter in the universe, remains one of science's greatest mysteries. But what if it actually is nothing more than ordinary matter purposely hidden from our view? What if we are only allowed to see a small fraction of the stars in our galaxy, because the vast majority of star systems are teeming with aliens who wish to remain unseen? Marc Zemin, a brilliant student of astrophysics, is the first human to ever stumble upon this startling secret, when his experiments with wormhole travel cause aliens to land on Earth and whisk him away into space. To his astonishment, the aliens want his help in fighting a colossal galactic war that is rapidly spiraling out of control. But as he struggles to survive from battle to battle...
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