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Upside-down underwater telescope to study visitors from space
March 17, 2003Scientists from the Universities of Sheffield and Leeds will soon be able to study some of the most elusive particles known to man, thanks to a giant telescope under the sea that looks down towards the centre of the Earth rather than up into the sky.
Together with fellow scientists from across Europe they are building a telescope 2400m (one and a half miles) under the Mediterranean Sea to detect neutrinos. These tiny elementary particles hardly exist at all, having no charge and almost no mass. Neutrinos zoom through the earth at almost the speed of light, travelling here from some of the most extreme regions of the cosmos. Understanding them will give us a new view of the Universe and may allow scientists to confirm the existence of dark matter. Dark matter is believed to make up some of the 90 per cent of the missing mass of the Universe that has never been detected.
The project, costing 20 million Euros, is the result of collaboration between 150 physicists and astronomers from sixteen European organisations.
The telescope will consist of ten 480m long strings fixed to the seabed, each with a weight at one end and a buoy at the other. Each string will have around 30 light detection photo-multipliers distributed along the entire length. The strings are connected, via a junction box on the seabed, to a 40km fibre optic cable, which relays information back to a base station on the south coast of France. Today the Nautille submarine has connected the first string to the cable using a robotic arm.
Dr Lee Thompson of the Physics and Astronomy Department at University of Sheffield is the UK project leader for Antares. He explains how the telescope works, "The photo-multipliers detect the light given off on the rare occasions when neutrinos interact with material (such as rock in the seabed or even seawater) and become muons. Muons are particles that are similar to electrons but heavier. When travelling through the water the muons give off a blue light, which the telescope will detect and record.
"Neutrinos have no charge so they always travel in a straight line. By following the path of the muons we will be able to determine where the neutrinos came from and discover the source of their creation.
"The reason that we need to build the telescope under the sea is that the water prevents muons from cosmic rays in the atmosphere from contaminating our study. By looking down the Earth also acts as a filter, as muons that haven?t been created from a neutrino will be absorbed before they can get into the study area."
Sheffield, University of
The telescope will consist of ten 480m long strings fixed to the seabed, each with a weight at one end and a buoy at the other. Each string will have around 30 light detection photo-multipliers distributed along the entire length. The strings are connected, via a junction box on the seabed, to a 40km fibre optic cable, which relays information back to a base station on the south coast of France. Today the Nautille submarine has connected the first string to the cable using a robotic arm.
Dr Lee Thompson of the Physics and Astronomy Department at University of Sheffield is the UK project leader for Antares. He explains how the telescope works, "The photo-multipliers detect the light given off on the rare occasions when neutrinos interact with material (such as rock in the seabed or even seawater) and become muons. Muons are particles that are similar to electrons but heavier. When travelling through the water the muons give off a blue light, which the telescope will detect and record.
"Neutrinos have no charge so they always travel in a straight line. By following the path of the muons we will be able to determine where the neutrinos came from and discover the source of their creation.
"The reason that we need to build the telescope under the sea is that the water prevents muons from cosmic rays in the atmosphere from contaminating our study. By looking down the Earth also acts as a filter, as muons that haven?t been created from a neutrino will be absorbed before they can get into the study area."
Sheffield, University of
Dark Matter Current Events and Dark Matter News RSSESA spacecraft may help unravel cosmic mystery
When Europe's comet chaser Rosetta swings by Earth tomorrow for a critical gravity assist, tracking data will be collected to precisely measure the satellite's change in orbital energy. The results could help unravel a cosmic mystery that has stumped scientists for two decades.
Precise picture of early Universe supports 'dark matter' theory
A detailed picture of the seeds of structures in the universe has been unveiled by an international team co-led by a Cardiff University scientist.
Iowa State researchers contribute to discovery of gamma rays from starburst galaxy
Iowa State University astrophysicists contributed to the recent discovery that a galaxy quickly creating new stars is also a source of high energy gamma rays.
Science at the Petascale: Roadrunner Results Unveiled
The world's fastest supercomputer, Roadrunner, at Los Alamos National Laboratory has completed its initial "shakedown" phase doing accelerated petascale computer modeling and simulations of a variety of unclassified, fundamental science projects.
A solution to Darwin's 'mystery of the mysteries' emerges from the dark matter of the genome
Biological species are often defined on the basis of reproductive isolation. Ever since Darwin pointed out his difficulty in explaining why crosses between two species often yield sterile or inviable progeny (for instance, mules emerging from a cross between a horse and a donkey), biologists have struggled with this question.
Scientists use world's fastest supercomputer to model origins of the unseen universe
Understanding dark energy is the number one issue in explaining the universe, according to Salman Habib, of the Laboratory's Nuclear and Particle Physics, Astrophysics and Cosmology group.
Jumping genes, gene loss and genome dark matter
In research published today by Nature, an international team describes the finest map of changes to the structure of human genomes and a resource they have developed for researchers worldwide to look at the role of these changes in human disease.
Prototype developed to detect dark matter
A team of researchers from the University of Zaragoza (UNIZAR) and the Institut d'Astrophysique Spatiale (IAS, in France) has developed a "scintillating bolometer", a device that the scientists will use in efforts to detect the dark matter of the Universe, and which has been tested at the Canfranc Underground Laboratory in Huesca, Spain.
James Webb Space Telescope Begins to Take Shape at Goddard
NASA's James Webb Space Telescope is starting to come together. A major component of the telescope, the Integrated Science Instrument Module structure, recently arrived at NASA Goddard Space Flight Center in Greenbelt, Md. for testing in the Spacecraft Systems Development and Integration Facility.
Queen's physicist unlocking the mysteries of neighbouring galaxies
An international team of astronomers, including Queen's University physicist Larry Widrow, have uncovered evidence of a nearby cosmic encounter.
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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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MHP, DARK MATTER FRUIT PUNCH 2.64 LB 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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Maximum Human Performance Dark Matter 1200g Blue Ras, Boxes by Maximum Human Performance 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 Matter by S. W. Ahmed (Author) 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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