The Wolfram Alpha Search Engine is now online, and can be found here.
Heavy use of the search engine has caused it to send back a message that it has exceeded its "user limits" .... but otherwise it appears to be a cool and practical search engine.
Saturday, May 16, 2009
Telescopes Poised To Spot Air-Breathing Aliens
Image: The next generation of space telescopes will be capable of detecting "biosignatures" in the light from planets orbiting other stars (Image: G. Bacon STSCI / ESA / NASA)From New Scientist:
SIGNS of life on planets beyond our own solar system may soon be in our sights. Experiments and calculations presented at an astrobiology meeting last week reveal how the coming generation of space telescopes will for the first time be capable of detecting "biosignatures" in the light from planets orbiting other stars.
Any clues about life on these exoplanets will have to come from the tiny fraction of the parent star's light that interacts with the planet on its journey towards Earth. The Hubble and Spitzer space telescopes have both detected gases such as carbon dioxide and water vapour in the atmospheres of a handful of gas-giant exoplanets as they pass in front of their parent stars. The gas molecules absorb light at characteristic wavelengths, and this shows up as dark lines in the spectrum of the starlight which has been filtered through the planet's atmosphere. But seeing evidence of life - so-called biosignatures - in the spectrum of worlds small enough to be rocky like Earth is beyond the sensitivity of these instruments.
Read more ....
Sleep Can Improve Your Word Power
From The Telegraph:Reading bedtime stories to children could help to improve their vocabulary, new research suggests.
Psychologists have discovered that a good night's sleep plays a crucial role in allowing the brain to store and remember new words learned during the day.
People who were asked to learn a set of fictitious words were better at remembering them after they had spent time asleep than if they were asked to recall the words just a few hours after being taught them.
Read more ....
Melting Ice Could Cause Gravity Shift
The disintegration of the Antarctic ice sheet could cause catastrophic flooding on the east and west coasts of America. AFPFrom The Independent:
The melting of one of the world's largest ice sheets would alter the Earth's field of gravity and even its rotation in space so much that it would cause sea levels along some coasts to rise faster than the global average, scientists said yesterday.
The rise in sea levels would be highest on the west and east coasts of North America where increases of 25 per cent more than the global average would cause catastrophic flooding in cities such as New York, Washington DC and San Francisco.
Read more ....
Star Crust Is Ten Billion Times Stronger Than Steel
The outer crusts of so-called neutron stars (above, a neutron star in an artist's conception) are ten billion times stronger than steel—making it the strongest known material in the universe, scientists said in May 2009. Image by Casey Reed, courtesy of Penn State From National Geographic News:
Move over, Superman.
The Man of Steel has nothing on the collapsed cores of massive snuffed-out stars, scientists say.
A new computer model suggests that the outer crusts of so-called neutron stars are the strongest known material in the universe.
To determine the breaking point of a neutron star's crust, the team modeled magnetic field stresses and crust deformation for a small region of the star's surface.
The results showed that the crust of a neutron star can withstand a breaking strain up to ten billion times the pressure it would take to snap steel.
"It sounds dramatic, but it's true," said study team member Charles Horowitz of Indiana University.
Read more ....
Friday, May 15, 2009
Let The Planet Hunt Begin: Kepler Spacecraft Begins Search For Other Earth-like Worlds
Artist concept of Kepler in space. (Credit: NASA/JPL)From Science Daily:
ScienceDaily (May 15, 2009) — NASA's Kepler spacecraft has begun its search for other Earth-like worlds. The mission, which launched from Cape Canaveral, Fla., on March 6, will spend the next three-and-a-half years staring at more than 100,000 stars for telltale signs of planets. Kepler has the unique ability to find planets as small as Earth that orbit sun-like stars at distances where temperatures are right for possible lakes and oceans.
"Now the fun begins," said William Borucki, Kepler science principal investigator at NASA's Ames Research Center, Moffett Field, Calif. "We are all really excited to start sorting through the data and discovering the planets."
Read more ....
Supercomputer Helps SoCal Prep For The Big One
From Live Science:
Very few things in life are certain. If you live in Southern California, however, rest assured that some time in the next few decades you will experience an earthquake of significant magnitude.
And while the disaster itself is probably unavoidable, knowing which areas will be most affected can do a great deal to mitigate the aftermath. For example, where will the strongest ground movement occur, and how long will the shaking last?
Obviously, when it comes to new construction in an area with a high probability of an earthquake in the relatively near future, this knowledge is invaluable. Engineers crave this sort of data when they are designing the buildings of tomorrow.
Read more ....
Can The Grid Handle Renewables?
Photo: LIGHTS OUT FOR THE OLD GRID? A six-month study will test the grid's ability to handle the load and fluctuation of a surge of renewable energy. FLICKR/PETER KAMINSKIFrom Scientific American:
A new study aims to find out how much electricity from wind and sunshine the aging power grid can support.
The Federal Energy Regulatory Commission launched a six-month study today to determine how much renewable energy the electric grid can accommodate.
FERC will work with the Lawrence Berkeley National Laboratory on the $500,000 study to validate the preliminary frequency-response tool developed by the commission to gauge the grid's reliability if large quantities of renewable energy are sent to the system.
"We need a good metric – a good yardstick, a tool – to assess how much renewable energy can be injected into the bulk power ... system," said Joseph McClelland, director of FERC's Office of Electric Reliability.
Read more ....
Water Way To Travel! Super Winged Submersible That 'Flies' Through The Ocean Unveiled
Sea for two: The Super Falcon Submersible surfacesnear San Francisco following 20 years of research
From The Daily Mail:
Man has raced across the land and launched into space, but traveling underwater has proved more tricky.
Now an engineer has built a high-tech winged submersible that he says can 'fly' beneath the waves.
The Super Falcon Submersible, which resembles Thunderbird 4, can reach depths of 1,500 feet and speed through the ocean at six knots, which is nearly seven miles per hour. It has a range of around 25 nautical miles.
Created by British inventor Graham Hawkes for Hawkes Ocean Technologies, it is the newest and most advanced sub of their Deep Flight series and the culmination of four generations of experimental prototypes.
Read more ....
Space Shuttle Masquerades As Sunspot In New Image
Photo: NASA's space shuttle Atlantis is on an 11-day mission to repair and upgrade the Hubble Space Telescope. The shuttle's silhouette can be seen against the sun in this image taken from Florida on Tuesday, when the shuttle was on its way to Hubble (Image: NASA/Thierry Legault)From New Scientist:
The space shuttle Atlantis masquerades as a sunspot in this image, taken by photographer Thierry Legault as the shuttle sped towards the Hubble Space Telescope on Tuesday.
Atlantis is on an 11-day mission to give Hubble a new lease on life. In a series of five back-to-back spacewalks, astronauts are replacing old equipment, installing two new cameras, and repairing two others.
After a two-day journey to reach Hubble, the shuttle's robotic arm reached out to grab hold of the probe on Wednesday. Astronauts emerged the next day to outfit the telescope with a new camera and replace an old computer.
Read more ....
Is Warp Speed Possible? We Ask a String Theorist
The Enterprise: Courtesy Industrial Light & Magic/Paramount Pictures From Popsci.com:
PopSci talks to futurist Michio Kaku about the (not necessarily) impossible physics of Star Trek.
Science geeks, Trekkers, and action-movie fans have now had a few days to digest the newest incarnation of the Star Trek franchise. PopSci set out to answer some of the movie's most puzzling questions (aside from what Winona Ryder was doing on Vulcan): Can we time-travel through black holes? Can we seed said black holes using something called "red matter"? How about teleportation -- will someone named Scotty (or Chekov) ever beam someone up?
Read more ....
Neandertals Sophisticated And Fearless Hunters, New Analysis Shows
Model of the Neanderthal man. Exhibited in the Dinosaur Park Münchehagen, Germany. (Credit: iStockphoto/Klaus Nilkens)From Science Daily:
ScienceDaily (May 14, 2009) — Neandertals, the 'stupid' cousins of modern humans were capable of capturing the most impressive animals. This indicates that Neandertals were anything but dim. Dutch researcher Gerrit Dusseldorp analysed their daily forays for food to gain insights into the complex behaviour of the Neandertal. His analysis revealed that the hunting was very knowledge intensive.
Although it is now clear that Neandertals were hunters and not scavengers, their exact hunting methods are still something of a mystery. Dusseldorp investigated just how sophisticated the Neandertals' hunting methods really were. His analysis of two archaeological sites revealed that Neandertals in warm forested areas preferred to hunt solitary game but that in colder, less forested areas they preferred to hunt the more difficult to capture herding animals.
Read more ....
Star Crust Is Ten Billion Times Stronger Than Steel
The outer crusts of so-called neutron stars (above, a neutron star in an artist's conception) are ten billion times stronger than steel—making it the strongest known material in the universe, scientists said in May 2009. Image by Casey Reed, courtesy of Penn State From National Geographic News:
Move over, Superman.
The Man of Steel has nothing on the collapsed cores of massive snuffed-out stars, scientists say.
A new computer model suggests that the outer crusts of so-called neutron stars are the strongest known material in the universe.
To determine the breaking point of a neutron star's crust, the team modeled magnetic field stresses and crust deformation for a small region of the star's surface.
The results showed that the crust of a neutron star can withstand a breaking strain up to ten billion times the pressure it would take to snap steel.
"It sounds dramatic, but it's true," said study team member Charles Horowitz of Indiana University.
Read more ....
19 Years Of Hubble
From The CBC:
Happy birthday, Hubble
This galaxy was chosen as a subject for the Hubble Space Telescope because it won the most votes in a competition hosted by the Space Telescope Science Institute. The contest was held in celebration of 2009's designation as the International Year of Astronomy. This year also marks the Hubble telescope's 19th year in operation. This group of three galaxies is known as Arp 274, and is about 400 million light years away from Earth in the constellation Virgo. You can see the birthplace of new stars in the small knots of bright blue in the small galaxy on the left, and the arms of the galaxy on the right. (NASA)
The link to see the pictures from Hubble are here.
Thursday, May 14, 2009
Gadgets Sap World's Electricity
From Live Science:Sometime this year, the number of people using a personal computer will pass the one billion mark, according to the International Energy Agency. By sometime next year there will be more than 3.5 billion mobile phones subscribers and 2 billion TVs in use around the world, according to a new report from the agency.
And that's a problem.
You've heard of vampire energy? It's the name given to electricity that runs TVs, stereos and computers when they're in sleep mode, not even being used. You've seen the little red lights that indicate something's still humming inside.
Add that to the juice used by all manner of gadgets when they are being used or charged and, well ...
Without new policies, the energy consumed by electronic gadgets will double by 2022 and increase threefold by 2030 to 1,700 Terawatt hours (TWh), the IEA estimates.
Read more ....
100 Geeks You Should Be Following On Twitter
From Geekdad/Wired News:Twitter has of late been inundated by, shall we say, “normals.” What was once our little playground has become rather more populated. But that doesn’t make it any less effective a tool for communication. It just means we have to stick together, and keep the geek community thriving.
To this end, GeekDad has assembled the following: a list of 100 awesomely geeky-geeks. These are great, creative gamers and chiptune artists, astronomers and LEGO builders. Of course such a list cannot dream of being exhaustive, and we hope you’ll add your own suggestions in the comments.
Read more ....
Fringe Season Finale Flirts With Theoretical Physics
From Popular Mechanics:
During the course of its first season, Fringe has played with the idea of that there are actually two realities, one slightly different from the other. In the season finale, "There's More Than One of Everything," the show delved into the science behind this idea, fleshing out the alternate reality with FBI Agent Olivia Dunham and company trying to stop über-villain David Robert Jones from getting to the elusive Massive Dynamic CEO William Bell, who, according to spokeswoman Nina Sharp, is hiding out in this other reality. PM spoke to physicist Michio Kaku, author of Physics of the Impossible, to perform our final fact check of Fringe, season one.
Read more ....
Angels & Demons - Separating Science From Fiction
Photo: In the film, Tom Hanks plays the Harvard academic Robert Langdon, who finds evidence that an ancient clandestine brotherhood have stolen antimatter from a secret laboratory at CERN, which they plan to use as a weapon to destroy the Vatican.From The Independent:
CERN scientist Tara Shears examines the scientific reality of new film Angels and Demons.
Anti-matter and CERN are getting fantastic exposure with the release of the film Angels and Demons today - a film adaptation of Dan Brown’s novel of the same name.
As a CERN scientist myself, when I heard that part of the plot was based in the world’s biggest particle physics laboratory I was intrigued to see how our work would be portrayed. I was pleasantly surprised on the whole; it was wonderful to see particle physics get the Hollywood treatment! However, when you delve deeper into the science behind the plot, there is a line to draw between reality and fiction.
Read more ....
Milk And Cereal As Good As Expensive Sports Drinks In Boosting Performance, Claim Scientists
The milk helps reduce lactic acid levels in the blood,the compound that causes stiffness after exercise Photo: GETTY
From The Telegraph:
Milk and cereal help to speed up recovery after exercise as much as expensive sports drinks, new findings from the University of Texas suggest.
Researchers found that athletes were just as replenished after exercise with a bowl of wheat flakes and skimmed milk as they were with many modern sports drinks which claim to rehydrate and re-energise the muscles.
They found that the traditional breakfast was just as good at replenishing blood sugar and insulin levels and that protein production was even better than with the so-called energy drinks.
Read more ....
Lift-Off! Telescopes Herschel And Planck Launched To Seek Out The Origins Of The Universe
From The Daily Mail:
Two European telescopes have launched into space today which could solve the mystery surrounding the origins of the universe.
The Herschel and Planck observatories were sent into orbit together from French Guinea at 2.12pm (BST) and scientists hope they will reveal crucial stages of star birth and galaxy formation.
This will help them answer some of the most important questions in modern science, such as how did the universe begin, how did it evolve to what we see now, and how will it continue to evolve in the future?
Read more ....
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