Monday, July 13, 2009
This Is Why the Shuttle Launch Is Delayed
From Popsci.com:
It's hard to launch a Space Shuttle when the launch pad keeps getting struck by lighting. NASA cameras caught 11 lightning strikes, including one direct hit to the pad, near the space shuttle Endeavour's launch pad, during a thunderstorm on July 10.
The storm forced the space agency to call for a 24-hour delay to inspect the shuttle for possible damage. One spectacular strike even hit the top of the launch pad's lightning rod, which channeled the electricity harmlessly away from the shuttle through a series of metal wires.
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New Treatment Hope For Sufferers Of Cancer That Has Hit Patrick Swayze
Oncologist Dr Andrew Gaya (L) and patient Robert Ferrant are seen with the new CyberKnife system at Harley Street in London Photo: PA From The Telegraph:
A man suffering from pancreatic cancer – one of most deadly forms of the disease and which has also struck Dirty Dancing star Patrick Swayze – has been given hope of long-term survival after being treated with an advanced form of radiotherapy.
Robert Ferrant, 62, who is one of the first in Britain to undergo the procedure, was given just a few months to live after he was diagnosed with the condition.
Only 13 per cent of people who contract it are alive a year after diagnosis and only three per cent surviving for five years.
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The First Earthling To Journey To Mars - Conan The Bacterium
Victoria crater, an impact crater at Meridiani Planum, near the equator of Mars.Photograph: Anonymous/AP
From The Guardian:
Pictures from a Nasa mission reveal new glimpses of a world as fantastic as any imagined by a science-fiction writer.
Scientists have picked the first crew of Earthlings to fly to another planet. Those chosen for a Mars mission to be launched in October include specimens of thale cress and brewer's yeast, and a microbe known as Conan the Bacterium.
Together with several other microscopic organisms, these representatives of earthly life will be carried in a package that will be flown on a Russian robot spacecraft and are scheduled to be returned to Earth in 2012. The experiment - Living Interplanetary Flight Experiment, or Life - is designed to show if living organisms can survive unprotected in space for long periods and thus support the theory of panspermia, which argues that simple organisms can survive for years as they float through space and that life on Earth could have been wafted here from another world.
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Is Grapefruit Juice Toxic?
From Live Science:This Week's Question: My daughter heard that grapefruit juice can be toxic for some people. Is that true?
The juice, itself, is not toxic, but you should be careful taking medicine with any grapefruit.
Grapefruit juice can raise the level of some medications in the blood. The effect of grapefruit was discovered after using juice to mask the taste of a medicine. So, be sure to ask your doctor or pharmacist if it is safe to have grapefruit with your medications.
Taking medicine can be hazardous to your health. You have to know what you're doing.
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Apollo Special: Mirrors On The Moon
Photo: Measuring the distance of the moon from Earth is one way of testing Einstein's theory of relativity (Image: Dan Long)From New Scientist:
EACH clear night when the moon is high in the sky, a group of astronomers in New Mexico take aim at our celestial neighbour and blast it repeatedly with pulses of light from a powerful laser. They target suitcase-sized reflectors left on the lunar surface by the Apollo 11, 14 and 15 missions, as well as by two Russian landers.
Out of every 300 quadrillion (1015) photons that are sent to the moon, about five find their way back. The rest are lost to our atmosphere, or miss the lunar reflectors altogether.
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Multi-Galaxy Collision Caught in Action
From Wired Science:
Four galaxies are involved in this pile-up 280 million light years from Earth. The bright spiral galaxy at the center of the image is punching through the cluster at almost two million miles per hour.
That speeding galaxy may be what is causing the curved swath of X-rays, shown in blue near the center of the image, which were captured by NASA’s orbiting Chandra X-ray Observatory. The three other yellowish galaxies in the collision are optically visible and were imaged by the Canada-France-Hawaii Telescope on the summit of the dormant Mauna Kea volcano in Hawaii.
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Top 10 Scientific Music Videos
From Wierd Science:
Music can make the driest scientific concepts entertaining, or even hilarious. Catchy tunes about DNA blend genetics with jokes. Ballads about the heart and pi bring dull facts to life. Here are some of our favorite videos that show how hard science rocks.
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Human History Written in Stone and Blood
Figure 1. Hunter-gatherer people living in southern Africa in the Middle Stone Age left behind artifacts in natural rock shelters and caves. At top is Sibudu Cave, located about 40 kilometers north of Durban. Below that is Ntloana Tsoana, a rock shelter located on the south bank of the Phuthiatsana River in the Lesotho highlands. At bottom, right of center in the photo, is Blombos Cave, located about 300 kilometers east of Cape Town. That’s where archaeologists found artifacts representing innovative behavior previously thought to have emerged in Europe much later. Improved dating of such artifacts helped the authors evaluate what contemporary factors might have contributed to the origins of modern human behavior. Top photograph courtesy of Lyn Wadley. Middle photograph courtesy of Richard Roberts. Bottom photograph courtesy of Chris Henshilwood.From American Scientist:
Two bursts of human innovation in southern Africa during the Middle Stone Age may be linked to population growth and early migration off the continent
In the past decade it has become clear that symbolic expression associated with modern human behavior began in Africa, not Europe. And it occurred tens of thousands of years earlier than was once thought. Answering why is difficult. A first step was more reliable dating of when culturally and technologically advanced people lived during the Middle Stone Age in the south of Africa. Zenobia Jacobs and Richard G. Roberts accomplished that dating, which prompted them to reject climate change as a primary cause for the advancements. Instead, drawing on genetic research, they embrace population growth as a likely, key influence.
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Sunday, July 12, 2009
Super-Slow-Motion Pictures Show Soap Bubble Bursting In Stunning Detail
After being poked the surface of the breaks up, from one side to another, turning its surface into a multitude of droplets which appear to hang in the air.From The Daily Mail:
To the human eye the bursting of a bubble is a simple affair. One prod of a finger and - pop! - it's vanished in a split second.
But as these breathtaking pictures show, the process is spectacular - if only we could see it.
These images were taken with a slow-motion camera to show every stage of the soap bubble's disappearance.
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Herschel Shows Breadth Of Vision
Herschel-SPIRE's view of M74 (R) compared with that of Nasa's Spitzer space telescope. The larger mirror on Herschel (3.5m vs 0.85m) pays dividends, and will allow the European telescope to build on Spitzer's discoveries.From The BBC:
Europe's Herschel space observatory is set to become one of the most powerful tools ever to study the Universe.
The "first light" data from its three instruments demonstrates a remarkable capability even though their set-up is still not complete.
Galaxy images released on Friday by the European Space Agency show detail previously unseen in the objects.
The pictures - and the thousands that will follow - should give new insights on star formation and galaxy evolution.
"We have some excellent images; they're not calibrated, but they look spectacular," said Dr Göran Pilbratt, Esa's Herschel project scientist.
"They tell you we are working; it's just fantastic," he told BBC News.
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Machines That Heal
Arms of Steel John B. Carnett From Popsci.com:
In the movies, entrusting human life to robot helpers and sophisticated machines inevitably ends in fire, destruction and death.
But in reality, the automatons are actually saving lives. Take the devices here: the hulking robot arms that rehabilitate stroke victims, the laser beam that calms Parkinson’s tremors, and the android that can fix you toast when you’re sick. Even the scary-looking, mind-reading skullcap will one day let paralyzed people turn on the lights just by thinking about it. No fire, no destruction, no death—just eye-popping technology and better medical care.
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Getting More Out Of Crude
Image: Holey catalyst: Rive Technology is designing a zeolite catalyst with pores larger than those found in conventional zeolites, which are widely used in petroleum and petrochemical production. The larger pores allow the catalysts to handle a wide range of compounds. Credit: Rive Technology From Technology Review:
An improved catalyst could help oil refineries get more gasoline out of a barrel of crude petroleum.
In an effort to make gasoline production cleaner and more efficient, Rive Technology of Cambridge, MA, is developing a catalyst that can help turn a greater percentage of crude petroleum into gasoline and other usable products. The company, which is testing the catalyst in its pilot plant in South Brunswick, NJ, believes that the technology will be able to process lower-grade fossil fuels and reduce the amount of energy that goes into the refining process.
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New Kind Of Astronomical Object Around Black Hole: Living Fossil Records 'Supermassive' Kick
This artist's conception shows a rogue black hole that has been kicked out from the center of two merging galaxies. The black hole is surrounded by a cluster of stars that were ripped from the galaxies. New calculations by David Merritt, from Rochester Institute of Technology, Jeremy Schnittman, from Johns Hopkins University, and Stefanie Komossa, from the Max-Planck-Institut for Extraterrestrial Physics in Germany suggest that hundreds of massive black holes, left over from the epoch of galaxy formation, are waiting to be detected in the nearby universe. (Credit: Space Telescope Science Institute)From Science Daily:
ScienceDaily (July 10, 2009) — The tight cluster of stars surrounding a supermassive black hole after it has been violently kicked out of a galaxy represents a new kind of astronomical object and a fossil record of the kick.
A paper published in the July 10 issue of The Astrophysical Journal discusses the theoretical properties of “hypercompact stellar systems” and suggests that hundreds of these faint star clusters might be detected at optical wavelengths in our immediate cosmic environment. Some of these objects may already have been picked up in astronomical surveys, reports David Merritt, from Rochester Institute of Technology, Jeremy Schnittman, from Johns Hopkins University, and Stefanie Komossa, from the Max-Planck-Institut for Extraterrestrial Physics in Germany.
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Swearing Makes Pain More Tolerable
From Live Science:That muttered curse word that reflexively comes out when you stub your toe could actually make it easier to bear the throbbing pain, a new study suggests.
Swearing is a common response to pain, but no previous research has connected the uttering of an expletive to the actual physical experience of pain.
"Swearing has been around for centuries and is an almost universal human linguistic phenomenon," said Richard Stephens of Keele University in England and one of the authors of the new study. "It taps into emotional brain centers and appears to arise in the right brain, whereas most language production occurs in the left cerebral hemisphere of the brain."
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The Moon Walkers: Twelve Men Who Have Visited Another World
Neil Armstrong in the Eagle after his historic moonwalk. Photograph: NasaFrom The Guardian:
What did it take to become a member of the most exclusive club in human history?
The 12 members of the most exclusive club in human history had many things in common.
All came from a highly technical background and all but one studied aeronautical or astronautical engineering. Growing up, many had been Boy Scouts and even more were active members of their University fraternities. They all went on to study for further degrees – many at military test pilot schools – and almost all of them saw active service in cold war skies, often flying nuclear weapons behind enemy lines.
These high-risk professions often claimed the lives of those to the left and right of them and frequently it was only luck that kept them alive long enough to apply to Nasa.
We might expect such parallel lives in men picked through a selection process devised to seek out "the right stuff". But despite the similarities in their CVs, no two men were from the same mould, as became evident in the years after Apollo.
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Why New Chrome OS Won't Turn Google Into a Monopoly: Analysis
From Popular Mechanics:
As Google announces its intention to create a full Web-based operating system, senior technology editor Glenn Derene has a flashback to the late '90s—when the Justice Department brought an antitrust action against Microsoft. Could Google's new browser-as-operating system kill competition?
In 1998, the U.S. Department of Justice (DOJ) brought an antitrust action against Microsoft for a variety of anti-competitive practices in the software industry—chief among them the bundling of the company's Internet Explorer browser into its dominant Windows operating system. The trial revealed plenty of bare-knuckled tactics and market manipulation on behalf of Microsoft, and stained the company's brand for years (perhaps forever, frankly) as a corporate bully. But the central argument from Microsoft was that, with the ascent of the Internet, the browser had become an integral part of the OS, and that competing stand-alone browsers such as Netscape and Opera were moribund products from a transition era. Microsoft contended that it needed to evolve the OS to adapt to the Internet-based era just to stay competitive as a company—a claim that seemed ludicrous back in the '90s, when the software giant seemed to have indomitable market power.
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Saturday, July 11, 2009
When Galaxies Collide, 280 Million Light Years Away
Stephan's Quintent, Colliding: NASAFrom Popsci.com:
A new image using data from NASA's Chandra X-Ray Observatory captures Stephan's Quintet in a new light.
130 years ago, astronomers discovered Stephan's Quintent--a compact group of galaxies 280 million light years from Earth. NASA's Chandra X-ray Observatory has captured the X-rays generated by the interstellar collision, as one of the galaxies is sucked through the center of the group at 2 million miles per hour.
The ridge of blue in the center represent the X-rays emitted by the collision, as shock wave heats the galaxy's gasses.
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100 Essential Skills for Geeks
From Geek Dad/Wired:As Geeks we are expected to have a certain set of skills that the majority of the population does not possess. This list is by no means complete, but I think it is a good sample of the skills required to be a true geek. I won’t pretend to have all the skills listed here. I even had to Google a few of them.
Like all good Geeks you should be able to utilize resources to accomplish any of these things. Knowing where to look for the knowledge is as good as having it so give yourself points if you are certain that you could Google the knowledge necessary for a skill.
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U.S. Science Is Tops, But Most Americans Don't Think It Is, A New Survey Finds.
From Scientific American:Today the American Association for the Advancement of Science (AAAS) and the Pew Research Center released results of a survey examining the attitudes of the general public and the scientific community as they regard to science.
The results, collected from 2,553 AAAS members and 2,001 public respondents, suggest that although average Americans hold a positive view of scientists and support the funding of research, they do not share the same perspectives as the scientific community on a variety of science issues.
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How To Ensure Lost Wallets Are Returned
Wallets containing the picture of an infant were most likely totrigger an honest reaction from the finder Photo: GETTY
From The Telegraph:
Lost wallets which contain a snapshot of a baby are more likely to be returned to their owners, scientists have discovered.
Researchers left 240 wallets on the streets of Edinburgh last year to see how many were returned to their owners. Some of the wallets contained one of four photographs – the baby, a cute puppy, a family and a portrait of an elderly couple.
Other wallets contained a card suggesting the owner had recently made a charity donation, while a control batch contained no additional items.
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