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Keyword: cosmic

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  • Cosmic rays fired at Earth – now we know where from

    03/17/2016 9:55:45 AM PDT · by LibWhacker · 33 replies
    Cosmos ^ | 3/17/16 | Bill Condie
    Cosmic rays fired at Earth - now we know where from The violent region at the centre of our galaxy is the prime candidate, after gamma ray analysis, Bill Condie reports. Photo montage of gamma-rays as measured by the HESS array on the night sky over Namibia, with one of the small HESS telescopes in the foreground. Credit: H.E.S.S. Collaboration, Fabio Acero and Henning Gast Astronomers believe they may have identified the source of the stream of cosmic rays that rain down on Earth from outer space. Cosmic rays are extremely high-energy particles such as protons and atomic nuclei....
  • Another Year, Another 20 Billion Kilometers Through The Universe

    12/31/2015 6:56:29 PM PST · by LibWhacker · 52 replies
    Scientific American ^ | 12/30/15 | Caleb A. Scharf
    Another year passes. Another 365 planetary spins completed (14.6 million kilometers of combined distance traveled if you live at the Earth's equator), and another journey of 940 million kilometers around the Sun. Time is marked off for us by a largely predictable, if not tedious, set of cycles. Except, this is by no means all the cosmic traveling we've done in the last 31.5 million seconds. For one thing, the solar system is not at rest with respect to its host galaxy. The Sun and its planetary entourage are moving in an orbital path within the Milky Way. The generally...
  • Cosmic Inflation’s Five Great Predictions

    06/22/2015 1:20:00 PM PDT · by LibWhacker · 15 replies ^ | 6/17/15 | Ethan Siegel
    Cosmic Inflation’s Five Great Predictions A “speculative” theory no more; it’s had four of them confirmed. Image credit: Max Tegmark / Scientific American, by Alfred T. Kamajian. “Scientific ideas should be simple, explanatory, predictive. The inflationary multiverse as currently understood appears to have none of those properties.” -Paul Steinhardt, 2014 When we think about the Big Bang, we typically think about the origin of the Universe: the hot, dense, expanding state where everything came from. By noticing and measuring the fact that the Universe is expanding today — that the galaxies are getting farther apart from one another in all directions — we...
  • Cosmic 'lighthouses' could reveal alien life

    08/21/2013 11:02:40 AM PDT · by LibWhacker · 25 replies
    The Telegraph ^ | 8/21/13 | Nick Collins
    Aliens may be trying to communicate with Earth by flashing blinking lasers towards our planet like a cosmic lighthouse, astronomers believe.Laser scientists at the Vienna University of Technology are searching for faint but repetitive light signals from the distant reaches of space, in the hope of identifying signals sent out by extraterrestrials, according to Astrobiology Magazine. Because of their ability to transmit signals over vast distances, lasers have long been considered a possible means of contact by alien species. But while astronomers have searched tens of thousands of stars for laser signals in the past – without identifying any...
  • Ice core data supports ancient space impact idea (cosmic impact about 12,900 years ago?)

    08/01/2013 3:35:01 PM PDT · by NormsRevenge · 9 replies
    BBC News ^ | 8/1/13 | Simon Redfern
    New data from Greenland ice cores suggest North America may have suffered a large cosmic impact about 12,900 years ago. A layer of platinum is seen in ice of the same age as a known abrupt climate transition, US scientists report. The climate flip has previously been linked to the demise of the North American "Clovis" people. The data seem to back the idea that an impact tipped the climate into a colder phase, a point of current debate. Rapid climate change occurred 12,900 years ago, and it is proposed that this is associated with the extinction of large mammals...
  • Swirls in the Afterglow of the Big Bang Could Set Stage for Major Discovery

    07/28/2013 9:51:58 PM PDT · by LibWhacker · 19 replies ^ | 7/25/13 | Adrian Cho
    Scientists have spotted swirling patterns in the radiation lingering from the big bang, the so-called cosmic microwave background (CMB). The observation itself isn't Earth-shaking, as researchers know that these particular swirls or "B-modes" originated in conventional astrophysics, but the result suggests that scientists are closing in on a much bigger prize: B-modes spawned by gravity waves that rippled through the infant universe. That observation would give them a direct peek into the cosmos' first fraction of a second and possibly shed light on how it all began."I see it as a big step forward," says Charles Bennett, a cosmologist...
  • Did An 8th Century Gamma Ray Burst Irradiate Earth?

    01/21/2013 7:50:06 AM PST · by blam · 51 replies
    Science Daily ^ | 1-21-2013 | Science Daily
    Did An 8th Century Gamma Ray Burst Irradiate Earth?Science DailyJanuary 21,2013 A nearby short duration gamma-ray burst may be the cause of an intense blast of high-energy radiation that hit the Earth in the 8th century, according to new research led by astronomers Valeri Hambaryan and Ralph NeuhÓ“user. The two scientists, based at the Astrophysics Institute of the University of Jena in Germany, publish their results in the journal Monthly Notices of the Royal Astronomical Society. In 2012 scientist Fusa Miyake announced the detection of high levels of the isotope Carbon-14 and Beryllium-10 in tree rings formed in 775 CE,...
  • The Cosmic Story of Carbon-14

    06/05/2012 12:48:06 AM PDT · by LibWhacker · 17 replies
    Starts with a Bang ^ | 6/4/12 | Ethan Siegel
    “Life exists in the universe only because the carbon atom possesses certain exceptional properties.” -James Jeans Here on Earth, every living thing is based around four fundamental, elemental building blocks of life: hydrogen, oxygen, nitrogen and, perhaps most importantly, carbon.Image Credit: Robert Johnson / University of Pennsylvania. From diamonds to nanotubes to DNA, carbon is indispensable for constructing practically all of the most intricate structures we know of. Most of the carbon in our world comes from long-dead stars, in the form of Carbon-12: carbon atoms containing six neutrons in their nucleus. About 1.1% of all carbon is Carbon-13, with one...
  • No evidence of time before Big Bang

    12/12/2010 8:51:25 AM PST · by LibWhacker · 46 replies · 1+ views
    Nature ^ | 12/10/10 | Edwin Cartlidge
    Latest research deflates the idea that the Universe cycles for eternity.Our view of the early Universe may be full of mysterious circles — and even triangles — but that doesn't mean we're seeing evidence of events that took place before the Big Bang. So says a trio of papers taking aim at a recent claim that concentric rings of uniform temperature within the cosmic microwave background — the radiation left over from the Big Bang — might, in fact, be the signatures of black holes colliding in a previous cosmic 'aeon' that existed before our Universe.
  • Have we found the universe that existed before the Big Bang?

    11/20/2010 10:05:12 PM PST · by LibWhacker · 136 replies · 1+ views
    io9 ^ | 11/19/10
    Have we found the universe that existed before the Big Bang? The current cosmological consensus is that the universe began 13.7 billion years ago with the Big Bang. But a legendary physicist says he's found the first evidence of an eternal, cyclic cosmos. The Big Bang model holds that everything that now comprises the universe was once concentrated in a single point of near-infinite density. Before this singularity exploded and the universe began, there was absolutely nothing - indeed, it's not clear whether one can even use the term "before" in reference to a pre-Big-Bang cosmos, as time itself may...
  • Cosmic 'Ghost': "Evidence of a supermassive black hole equal in power to a billion supernovas."

    09/04/2010 6:12:52 PM PDT · by LibWhacker · 54 replies
    Mg20727753.800-1_300 NASA's Chandra X-ray Observatory located a cosmic "ghost" that scientists think is evidence of a huge eruption produced by a supermassive black hole equal in power to a billion supernovas. The source, HDF 130, is over 10 billion light years away and existed at a time 3 billion years after the Big Bang, when galaxies and black holes were forming at a high rate. The X-ray ghost, so-called because a diffuse X-ray source has remained after other radiation from the outburst has died away, is in the Chandra Deep Field-North, one of the deepest X-ray images ever taken. "We'd...
  • New cosmic mystery: Herschel telescope spots giant hole in space

    05/11/2010 7:05:39 PM PDT · by NormsRevenge · 35 replies · 1,203+ views
    A vast hole in space has been unexpectedly discovered in a part of the universe thought to be packed with a cloud of dense gas and dust – the latest in a string of cosmic finds by the European Herschel infrared space telescope. The surprising hole in space has provided astronomers with a new glimpse at the end of the star-forming process. ... Stars are born in dense clouds of dust and gas, and while jets of gas have been spotted coming from young stars, the process of how a star uses this gas to disperse surrounding debris and emerge...
  • Origin of key cosmic explosions unraveled

    02/18/2010 2:50:35 PM PST · by NormsRevenge · 10 replies · 427+ views
    AFP on Yahoo ^ | 2/18/10 | AFP
    CHICAGO (AFP) – Astronomers who have long used supernovas as cosmic mile markers to help measure the expansion of the universe now have an answer to the nagging question of what sparks the massive stellar explosions. "These are such critical objects in understanding the universe," lead author Marat Gilfanov of the Max Planck Institute for Astrophysics in Germany said Wednesday in describing his team's study. "It was a major embarrassment that we did not know how they worked. Now we are beginning to understand what lights the fuse of these explosions." Most scientists say Type 1a supernovae are formed when...

    09/20/2009 4:29:11 AM PDT · by Cvengr · 4 replies · 340+ views
    Bible Study Notes | 1989 | R. B. Thieme, Jr.
    C. Gate #3: Self-Righteousness Arrogance. 1. Introduction. a. Self-righteousness means to be righteous in one's own esteem; in fact, to be Pharisaical. Our Lord condemned self-righteousness in His great dissertation of Matt 23, which begins: "Woe unto you, scribes, Pharisees, hypocrites." b. Self-righteousness is generally associated with arrogance. It is the arrogant reliance on one's own assumed, inconsistent, and hypocritical righteousness. c. Self-righteousness is the arrogant conviction that one's own righteousness is superior to that of all others. It is the conclusion that one's own righteousness is so great that intolerance of all others becomes the modus operandi of blind...

    09/20/2009 3:35:25 AM PDT · by Cvengr · 5 replies · 694+ views
    Bible Study Notes | 1989 | R. B. Thieme, Jr.
    A. Gate #1: Motivational Arrogance. 1. Definition and Description. a. All arrogance starts with thinking, moves into motivation, and from there moves into decisions and actions. b. By definition, motivational arrogance is a complex of mental attitude sins, all of which are related to arrogance or have their foundation in the basic concept of the sin of pride. c. Pride is defined as inordinate self-esteem, unreasonable conceit, preoccupation with self, insolence, rejection of authority, vanity, self-justification, an inflated concept of self, and the exaggeration of one's own self-importance. d. The complex of sins in motivational arrogance includes pride, jealousy, bitterness,...
  • Journeying Through the Quantum Froth

    08/09/2009 12:08:19 PM PDT · by LibWhacker · 34 replies · 1,151+ views
    FQXi ^ | 8/9/09 | Marc Kaufman & Zeeya Merali
    Are cosmic rays revealing the quantum nature of spacetime? Could theories of (not) everything help solve the puzzle of quantum gravity? The architect of doubly special relativity thinks so.In his youth, there were two things that regularly competed for Giovanni Amelino-Camelia’s attention: his favorite soccer team, Napoli, and "anything that came close to being scientific." And since Napoli was struggling in the Italian soccer league in the summer of 1978, Amelino-Camelia found himself watching a series of programs on special relativity instead of soccer. "That was really the point of no return for me," he remembers. "Although I was 13-years...
  • Sun leaves Earth wide open to cosmic rays

    06/28/2009 4:33:41 PM PDT · by LibWhacker · 13 replies · 812+ views
    Phenomenica ^ | 6/28/09
    Washington, June 28: The sun, a star at the centre of the solar system, is known to provide ideal conditions for life to thrive on Earth. But, astronomers have claimed that it also leaves the planet wide open to harmful cosmic rays. A joint team from University of Arizona and University of Texas in the US has found that the sun periodically leaves Earth open to assaults from interstellar nasties in a way that most stars do not. The sun protects humans from cosmic rays and dust from beyond the solar system by enveloping in the heliosphere -- a bubble...
  • Is a Nearby Object in Space Beaming Cosmic Rays at Earth?

    05/04/2009 1:58:51 PM PDT · by LibWhacker · 16 replies · 962+ views
    Universe Today | NASA ^ | 5/4/09 | Nancy Atkinson
    Data from several different space and ground based observatories imply the presence of a nearby object that is beaming cosmic rays our way. Scientists with the Fermi Space Telescope say an unknown pulsar may be close by, sending electrons and positrons towards Earth. Or another more exotic explanation is that the particles could come from the annihilation of dark matter. But whatever it is, the source is relatively close, surely in our galaxy. “If these particles were emitted far away, they’d have lost a lot of their energy by the time they reached us,” said Luca Baldini, a Fermi collaborator....
  • New Mystery from Cosmic Dawn: The Blob

    04/22/2009 4:33:54 PM PDT · by LibWhacker · 7 replies · 612+ views
    Universe Today ^ | April 22nd, 2009 | Anne Minard
    This image of the Himiko object is a composite and in false color. The bar at the lower right represents 10,000 light years. Credit: M. Ouchi et al. This mysterious, giant object existed at a time when the universe was only about 800 million years old. It stretches for 55 thousand light years, a record for that early point in time. Its length is comparable to the radius of the Milky Way’s disk. Besides being a great candidate for a future “Where in the Universe Challenge,” what is it? In general, objects such as this one are dubbed extended...
  • Hubble Photographs Cosmic Fountain

    04/21/2009 9:21:30 AM PDT · by NormsRevenge · 21 replies · 1,422+ views ^ | 4/21/09
    To commemorate almost two decades of photographing the wonders of the universe, the Hubble Space Telescope captured an image of a peculiar group of interacting galaxies that contains a "cosmic fountain" of stars, gas and dust that stretches about 100,000 light years. Over the past 19 years, Hubble has taken many images of galactic collisions and close encounters. The new image of a trio of galaxies, called Arp 194, looks as if of the galaxies has sprung a leak. The bright blue streamer seen in the image is really a stretched spiral arm full of newborn blue stars. This stellar...
  • Astronauts threatened by cosmic rays as sun becomes less active

    01/08/2009 10:47:00 PM PST · by NutCrackerBoy · 25 replies · 962+ views
    UK Daily Mail Online ^ | 10:19 AM on 08th January 2009 | Daily Mail Reporter
    Astronauts returning to the moon could be threatened by cosmic rays as a result of the sun becoming less active, scientists have said. The sun's ability to shield the solar system from harmful radiation could falter in the early 2020s, research from the Swiss Federal Institute of Aquatic Science and Technology claimed.At about the same time, the American space agency Nasa plans to send astronauts back to the moon.
  • Star Watch - Archaeologists Discover A "Cosmic Clock"

    05/25/2008 8:29:53 PM PDT · by blam · 23 replies · 202+ views
    Tenerife News ^ | 5-24-2008
    Star watch - Archaeologists discover a “cosmic clock” Overcrowded in their lower reaches they might be, but the Canary Islands still possess some solitary mountain wilder-nesses, places little visited thanks to their rugged inaccessibility, and which have hardly changed since they were frequented by the pre-colonial aboriginal islanders. And traces of their presence are still turning up, often in the form of petroglyphs, enigmatic scratched marks on rocks and boulders which held some special significance about which we can only guess today. The latest find is, say archaeologists, one of the most exciting. They are calling it a cosmic clock,...
  • Piece of Missing Cosmic Matter Found

    05/12/2008 7:05:51 PM PDT · by NormsRevenge · 71 replies · 155+ views on Yahoo ^ | 5/12/08 | Andrea Thompson
    Astronomers have found a piece of the universe's puzzle that's been missing for awhile: a type of extremely hot, dense matter that is all but invisible to us. Engaging in something like cosmic accounting, astronomers have tried to balance the scant amount of matter that has been directly observed with the vast amount that remains unobserved directly. The latter constitutes about 90 percent of the universe's matter. Galaxies, the stars within them, the planet we live on and the chairs we sit on are made up of normal matter — the protons, electrons and neutrons that are collectively called baryons....
  • Cosmic ray mystery solved?

    11/12/2007 1:12:47 PM PST · by LibWhacker · 30 replies · 105+ views
    Universe's most energetic particles point to huge black holesThe most energetic particles in the universe – ultrahigh-energy cosmic rays – likely come from supermassive black holes in the hearts of nearby active galaxies, says a study by scientists from nearly 90 research institutions worldwide, including the University of Utah. “We discovered the sources of the highest energy particles in the universe,” says Miguel Mostafa, an assistant professor of physics at the University of Utah and one of 370 scientists and engineers belonging to a 17-nation collaboration that operates the $54 million Pierre Auger Observatory in Argentina. “The sources are the...
  • Black Holes Launch Powerful Cosmic Winds

    11/05/2007 7:04:25 PM PST · by NormsRevenge · 5 replies · 96+ views on Yahoo ^ | 11/05/07 | Charles Q. Choi
    Black holes often are thought of as just endless pits in space and time that destroy everything they pull toward them. But new findings confirm the reverse is true, too: Black holes can drive extraordinarily powerful winds that push out and force star formation and shape the fate of a galaxy. Supermassive black holes are suspected to lurk in the hearts of many—if not all—large galaxies. These holes drag gas inward, which accrues in rapidly spinning, glowing disks. Astronomers have long thought that such "accretion disks" give off mighty winds that shape the host galaxies, profoundly influencing how they grow....
  • Astronomers puzzled by cosmic black hole (patches in the universe where nobody's home)

    08/23/2007 7:36:01 PM PDT · by NormsRevenge · 63 replies · 1,453+ views
    AP on Yahoo ^ | 8/23/07 | Seth Borenstein - ap
    WASHINGTON - Astronomers have stumbled upon a tremendous hole in the universe. That's got them scratching their heads about what's just not there. The cosmic blank spot has no stray stars, no galaxies, no sucking black holes, not even mysterious dark matter. It is 1 billion light years across of nothing. That's an expanse of nearly 6 billion trillion miles of emptiness, a University of Minnesota team announced Thursday. Astronomers have known for many years that there are patches in the universe where nobody's home. In fact, one such place is practically a neighbor, a mere 2 million light years...
  • Cosmic Bullets Pierce Space Cloud (Orion Nebula)

    03/24/2007 7:52:29 PM PDT · by NormsRevenge · 24 replies · 2,780+ views on Yahoo ^ | 3/22/07 | Ker Than
    Astronomers just got their most detailed look yet at supersonic 'bullets' of gas piercing through dense clouds of hydrogen gas in the Orion Nebula. Each bullet [image] is about ten times the size of Pluto's orbit around the Sun and travels through the clouds at up to 250 miles (400 kilometers) per second-or about a thousand times faster than the speed of sound. The bulk of both the bullets and the surrounding gas cloud [image] consists of molecular hydrogen. The tip of each bullet is packed with iron atoms that are heated by friction and glow bright blue in the...
  • Cosmic Rays Blamed For Global Warming

    02/10/2007 6:38:21 PM PST · by blam · 133 replies · 3,780+ views
    The Telegraph (UK) ^ | 2-11-2007 | Richard Gray
    Cosmic rays blamed for global warming By Richard Gray, Science Correspondent, Sunday Telegraph Last Updated: 1:08am GMT 11/02/2007 Man-made climate change may be happening at a far slower rate than has been claimed, according to controversial new research. Scientists say that cosmic rays from outer space play a far greater role in changing the Earth's climate than global warming experts previously thought. In a book, to be published this week, they claim that fluctuations in the number of cosmic rays hitting the atmosphere directly alter the amount of cloud covering the planet. High levels of cloud cover blankets the Earth...
  • Death of a star: Supernova oddity prompts cosmic rethink (SN 2002fk)

    01/06/2007 11:43:11 PM PST · by NormsRevenge · 7 replies · 298+ views
    AFP on Yahoo ^ | 1/5/07 | AFP
    PARIS (AFP) - Astronomers in Europe and the United States have detected the remnants of two exploding stars that could lead to a rethink about supernovae, the European Space Agency said. The team examined X-ray data from the embers of two supernovae, DEM L238 and DEM L249, which were stars that had exploded in a nearby galaxy. Most supernovae occur when a very massive star runs out of fuel, its core collapses and then explodes, leaving behind a neutron star or a black hole. But there is also a rarer supernova, called Type 1a, which starts with a binary system...
  • Cosmic Rays May solve Global Warming Problem

    10/03/2006 8:57:31 PM PDT · by blam · 22 replies · 742+ views
    The Telegraph (UK) ^ | 10-4-2006 | Roger Highfield
    Cosmic rays may solve global warming problem By Roger Highfield, Science Editor (Filed: 04/10/2006) Cosmic events could help soften the impact of global warming by triggering cloud formations, suggests research published yesterday. A team of Danish scientists concluded in the Proceedings of the Royal Society that making clouds is plausible, using the Sun's magnetic field. The Sun has been at its strongest for more than 60 years and a period of high solar activity could be approaching its end. "This would produce a cooling effect that could counter part of the global warming predicted for the next century," said Dr...
  • Hubble Spots 500 Galaxies in Early Universe [w/ cool pic of Hubble Deep Field]

    09/22/2006 4:47:28 PM PDT · by Excuse_My_Bellicosity · 35 replies · 2,646+ views ^ | 21 September 2006 | Sara Goudarzi
    Recent images from the depths of cosmos show more than 500 galaxies in the early universe, scientists reported today. The galaxies—viewed with the Hubble Space Telescope—existed less than a billion years after the Big Bang, the purported birth of our universe, and flourished when the cosmos was less than 7 percent of its current age. They are smaller than most of today's giant galaxies and sport a blue shade, a signature of blazing star births. The blue light, which took almost 13 billion years to arrive on Earth, was shifted to a red color because the expansion of space stretches...
  • Stardust mission returned 'cosmic treasure,' scientist says

    01/19/2006 1:45:23 PM PST · by NormsRevenge · 24 replies · 744+ views
    ap on Bakersfield Californian ^ | 1/19/06 | Pam Easton - ap
    SPACE CENTER, Houston (AP) - A honeycomb cluster of cells on NASA's Stardust spacecraft captured thousands of samples of interstellar and comet dust that scientists said Thursday could give them the first definitive evidence about how the solar system formed. "Its cargo was an ancient, cosmic treasure from the very edge of the solar system - a treasure that formed when the solar system formed 4.5 billion years ago," said Donald Brownlee, a University of Washington scientist who worked on the Stardust mission managed by the Jet Propulsion Laboratory in Pasadena, Calif. Some of the samples collected during the seven-year,...
  • Astronomers detect most distant cosmic explosion (~13 billion years old)

    09/12/2005 9:57:03 PM PDT · by NormsRevenge · 13 replies · 716+ views
    Reuters on yahoo ^ | 9/12/05 | Reuters - Washington
    WASHINGTON (Reuters) - Astronomers said on Monday they have detected a cosmic explosion at the very edge of the visible universe, a 13-billion-year-old blast that could help them learn more about the earliest stars. The brilliant blast -- known as a gamma ray burst -- was probably caused by the death of a massive star soon after the Big Bang, but was glimpsed on September 4 by NASA's new Swift satellite and later by ground-based telescopes. The explosion occurred soon after the first stars and galaxies formed, perhaps 500 million to 1 billion years after the Big Bang explosion that...
  • Cosmic rays may prevent long-haul space travel

    08/01/2005 1:19:26 PM PDT · by LibWhacker · 155 replies · 2,530+ views
    New Scientist ^ | 8/1/05 | Rob Edwards
    The radiation encountered on a journey to Mars and back could well kill space travellers, experts have warned. Astronauts would be bombarded by so much cosmic radiation that one in 10 of them could die from cancer. The crew of any mission to Mars would also suffer increased risks of eye cataracts, loss of fertility and genetic defects in their children, according to a study by the US Federal Aviation Administration (FAA). Cosmic rays, which come from outer space and solar flares, are now regarded as a potential limiting factor for space travel. "I do not see how the problem...
  • Near Perfect "Einstein Ring" Discovered

    04/30/2005 7:48:29 AM PDT · by Excuse_My_Bellicosity · 17 replies · 1,301+ views
    Universe Today ^ | Apr 29, 2005 | Jeff Barbour
    Summary - (Apr 29, 2005) Gravitational lensing happens when the gravity of a relatively close galaxy acts as a telescope lens to focus the light from a more distant galaxy. It allows astronomers to see distant objects they could never have a hope of observing with current instruments, essentially looking back to moments after the Big Bang (cosmically speaking). The galaxies are never perfectly lined up, though, and the "natural telescope" is a bit blurry. But now astronomer Remi Cabanac has found one of the most complete lenses ever discovered: a near perfect Einstein Ring, magnifying a distant galaxy with...
  • Simulations Reveal Surprising News About Black Holes

    03/28/2005 7:17:40 AM PST · by Excuse_My_Bellicosity · 22 replies · 1,165+ views
    For more than 30 years, astrophysicists have believed that black holes can swallow nearby matter and release a tremendous amount of energy as a result. Until recently, however, the mechanisms that bring matter close to black holes have been poorly understood, leaving researchers puzzled about many of the details of the process. Now, however, computer simulations of black holes developed by researchers, including two at The Johns Hopkins University, are answering some of those questions and challenging many commonly held assumptions about the nature of this enigmatic phenomenon. "Only recently have members of the research team -- John Hawley and...
  • Cosmic Rays To Solve Ancient Mexican (Pyramid) Mystery

    02/21/2005 12:26:52 PM PST · by blam · 12 replies · 907+ views
    Scotsman ^ | 2-21-2005 | John von Radowitz
    Cosmic Rays to Solve Ancient Mexican Mystery By John von Radowitz, PA Science Correspondent Sub-atomic particles created by cosmic rays from space are to be used to probe a giant Mexican pyramid and solve one of the world’s greatest archaeological mysteries. Investigators are to install detectors beneath the Pyramid of the Sun that look for muons – charged particles generated when cosmic rays hit the atmosphere which continuously shower the Earth. They hope the rate at which muons pass through the pyramid will reveal any hidden burial chambers inside. The step pyramid, about 30 miles north-east of Mexico city, is...
  • Scientists Spy Cosmic Waves Around Black Hole

    01/10/2005 7:32:40 PM PST · by NormsRevenge · 33 replies · 1,327+ views
    Reuters on Yahoo ^ | 1/10/05 | Deborah Zaborenko - Reuters
    SAN DIEGO (Reuters) - Black holes may actually drag the fabric of space and time around them as they spin, creating waves for cosmic material to surf on, astronomers said on Monday. This is new evidence that some black holes spin, even as they pull in everything around them, including light. Additional research shows that black holes can twirl material at tremendous speed, as fast as 20,000 miles per second. "Gas whipping around the black hole has no choice but to ride that wave," Jon Miller of the Harvard-Smithsonian Center for Astrophysics said. "Albert Einstein predicted this over 80 years...
  • 'No Cosmic Ray Climate Effects' (Global Warming)

    01/27/2004 3:16:24 PM PST · by blam · 32 replies · 2,646+ views
    BBC ^ | 1-27-2004 | Alex Kirby
    'No cosmic ray climate effects' By Alex Kirby BBC News Online environment correspondent Clouds' role in climate change remains contested The principal cause of recent climate change is not cosmic rays but human activities, a group of scientists says. They say an article last year linking cosmic rays and changes in temperature was "scientifically ill-founded". They say the authors' methods were open to doubt and their conclusions wrong, surprising experts with their claims. In Eos, the journal of the American Geophysical Union, the 11 Earth and space scientists insist that greenhouse gases remain the chief climate suspect. In the climate...
  • Cosmic Mysteries of Mithras | Mithraism | Ancient Religion

    10/31/2003 6:19:29 PM PST · by ckilmer · 10 replies · 528+ views
    Biblical Archaeology Review vol. 20, #5 ^ | September/October 1994 | David Ulansey
    MITHRAISM The Cosmic Mysteries of Mithras by David Ulansey Author of THE ORIGINS OF THE MITHRAIC MYSTERIES (Oxford University Press, 1991) The following essay is adapted from my article,"Solving the Mithraic Mysteries" Biblical Archaeology Review (vol. 20, #5 [September/October 1994] pp. 40-53) This article is a summary of my book on Mithraism, THE ORIGINS OF THE MITHRAIC MYSTERIES(Oxford University Press, revised paperback, 1991) [To order this book (for $13.95), click here.]   The Encyclopedia Britannica has given this page its "Web's Best Sites" award. The Cosmic Mysteries of Mithras (Note: complete documentation for the following essay can be found...
  • Astronomy Picture of the Day 2-14-03

    02/13/2003 9:18:01 PM PST · by petuniasevan · 7 replies · 391+ views
    NASA ^ | 2-14-03 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 February 14 The Heart in NGC 346 Credit: Y.Nazé (Université de Ličge) et al., CXC, NASA Explanation: Yes, it's Valentine's Day (!) and looking toward star cluster NGC 346 in our neighboring galaxy the Small Magellanic Cloud, astronomers have noted this heart-shaped cloud of hot, x-ray emitting gas in the cluster's central region. The false-color Chandra Observatory x-ray image also shows a strong x-ray source just above...
  • Astronomy Picture of the Day 2-09-03

    02/09/2003 5:17:53 AM PST · by petuniasevan · 7 replies · 370+ views
    NASA ^ | 2-09-03 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 February 9 COBE Dipole: Speeding Through the Universe Credit: DMR, COBE, NASA, Four-Year Sky Map Explanation: Our Earth is not at rest. The Earth moves around the Sun. The Sun orbits the center of the Milky Way Galaxy. The Milky Way Galaxy orbits in the Local Group of Galaxies. The Local Group falls toward the Virgo Cluster of Galaxies. But these speeds are less than the speed...
  • Earth Likely Spared From One Form Of Cosmic Doom

    01/22/2003 6:37:35 AM PST · by blam · 10 replies · 233+ views
    Scienc Daily ^ | 1-22-2003 | Goddard Space Flight Center
    Source: NASA Goddard Space Flight Center Date: 2003-01-22 Earth Likely Spared From One Form Of Cosmic Doom We have one less thing to worry about. While the cosmic debris from a nearby massive star explosion, called a supernova, could destroy the Earth's protective ozone layer and cause mass extinction, such an explosion would have to be much closer than previously thought, new calculations show. Scientists at NASA and Kansas University have determined that the supernova would need to be within 26 light years from Earth to significantly damage the ozone layer and allow cancer-causing ultraviolet radiation to saturate the Earth's...
  • Astronomy Picture of the Day 1-09-03

    01/09/2003 3:48:17 AM PST · by petuniasevan · 9 replies · 336+ views
    NASA ^ | 1-09-03 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 January 8 Abell 1689 Warps Space Credit: N. Benitez (JHU), T. Broadhurst (Hebrew Univ.), H. Ford (JHU), M. Clampin(STScI), G. Hartig (STScI), G. Illingworth (UCO/Lick), ACS Science Team, ESA, NASA Explanation: Two billion light-years away, galaxy cluster Abell 1689 is one of the most massive objects in the Universe. In this view from the Hubble Space Telescope's Advanced Camera for Surveys, Abell 1689 is seen to warp...
  • Astronomy Picture of the Day 12-19-02

    12/19/2002 5:08:57 AM PST · by petuniasevan · 5 replies · 279+ views
    NASA ^ | 12-19-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 December 19 RAPTOR Images GRB 021211Credit: P. Wozniak, W.T. Vestrand, et al., RAPTOR Project, LANL Explanation: On December 11 astronomers found one of the brightest and most distant explosions in the Universe - a gamma-ray burst - hiding in the glare of a relatively nearby star. The earliest image of the burst's visible light was caught by an earthbound RAPTOR (RAPid Telescopes for Optical Response). The two...
  • Cosmic Rays 'Linked To Clouds' (Global Warming)

    10/19/2002 8:22:28 AM PDT · by blam · 8 replies · 346+ views
    BBC ^ | 10-19-2002 | Alex Kirby
    Saturday, 19 October, 2002, 12:36 GMT 13:36 UKCosmic rays 'linked to clouds' The influence of clouds on climate change is poorly understood By Alex Kirby BBC News Online environment correspondent German scientists have found a significant piece of evidence linking cosmic rays to climate change. They have detected charged particle clusters in the lower atmosphere that were probably caused by the space radiation. They say the clusters can lead to the condensed nuclei which form into dense clouds. Clouds play a major, but as yet not fully understood, role in the dynamics of the climate, with some types acting to...
  • Chandra Discovers "Rivers Of Gravity" That Define Cosmic Landscape

    08/02/2002 4:41:48 PM PDT · by vannrox · 60 replies · 970+ views
    ScienceDaily Magazine ^ | Thursday, August 01, 2002 | Editorial Staff
    Reprinted from ScienceDaily Magazine ...Source:             NASA/Marshall Space Flight Center Date Posted:    Thursday, August 01, 2002Web Address: Chandra Discovers "Rivers Of Gravity" That Define Cosmic Landscape NASA's Chandra X-ray Observatory has discovered part of an intergalactic web of hot gas and dark matter that contains most of the material in the universe. The hot gas, which appears to lie like a fog in channels carved by rivers of gravity, has been hidden from view since the time galaxies formed. "The Chandra observations, together with ultraviolet observations, are a major advance in our understanding of how the universe evolved over the last 10 billion...
  • Astronomy Picture of the Day 5-29-02

    05/28/2002 9:21:26 PM PDT · by petuniasevan · 14 replies · 269+ views
    NASA ^ | 5-29-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 May 29 Cosmic Ripples Implicate Dark Universe Credit: Very Small Array Collaboration Explanation: What may appear fuzzy to some makes things crystal clear to others. The cosmic microwave background radiation emanating from the universe could only have the above fuzzy pattern if it contained clear amounts of dark matter and dark energy. The conclusion, based on a detailed analysis of the temperature and spacing of the bumps,...
  • Earth Punctured By Tiny Cosmic Missles

    05/11/2002 6:11:38 PM PDT · by blam · 84 replies · 2,109+ views
    The Telegraph ^ | 5-12-2002 | Robert Matthews
    Earth punctured by tiny cosmic missiles By Robert Matthews, Science Correspondent (Filed: 12/05/2002) FORGET dangers from giant meteors: Earth is facing another threat from outer space. Scientists have come to the conclusion that two mysterious explosions in the 1990s were caused by bizarre cosmic missiles. The two objects were picked up by earthquake detectors as they tore through Earth at up to 900,000 mph. According to scientists, the most plausible explanation is that they were "strangelets", clumps of matter that have so far defied detection but whose existence was posited 20 years ago. Formed in the Big Bang and inside...
  • Astronomy Picture of the Day 3-28-02

    03/28/2002 3:28:43 PM PST · by petuniasevan · 11 replies · 328+ views
    NASA ^ | 3-28-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 March 28 Centaurus Galaxy Cluster in X-RaysCredit: J. Sanders, A. Fabian, (IoA Cambridge), NASA Explanation: The Centaurus Cluster is a swarm of hundreds of galaxies a mere 170 million light-years away. Like other immense galaxy clusters, the Centaurus Cluster is filled with gas at temperatures of 10 million degrees or more, making the cluster a luminous source of cosmic x-rays. While individual galaxies are not seen here,...