Science & TechnologyS


Meteor

Scientists Unravelling Mysteries of Saskatchewan Meteorite

Milley
© Geoff Howe/Canadian PressOn Nov. 28, Ellen Milley posed with fragments of a 10-tonne meteorite she found in a small pond approximately 40 kilometres from Lloydminster, Sask.
Researchers who found chunks of a meteorite in Saskatchewan last November believe they're getting close to answering a key question: where in space did it come from?

University of Calgary graduate student Ellen Milley, who was part of the team that found space rocks in an area known as Buzzard Coulee southeast of Lloydminster, was at the University of Saskatchewan in Saskatoon Monday to talk about what the team has learned.

So far, it looks like the meteorite didn't come from the asteroid belt beyond the orbit of Mars, she said.

The road to reaching that conclusion began when the space rocks fell Nov. 20.

It was a night when hundreds of people across Western Canada witnessed a spectacular fireball across the sky caused by the estimated 10-tonne rock.

Saturn

Holographic Universe Might Conceal Many Other Dimensions

Viennese scientists are trying to grasp the mysteries of the holographic principle: How many dimensions are there in our universe?

"A hologram, as you find it on bank notes or credit cards, appears to show a three-dimensional picture, even though in fact it is just two-dimensional," Daniel Grumiller explained. He is at the Institute of Theoretical Physics, Vienna University of Technology.

For decades, scientists have been wondering about the existence of additional dimensions so far hidden to our senses.

Grumiller and his colleagues are trying the opposite approach: Instead of postulating additional dimensions, they believe that our universe could in fact be described by less than four dimensions.

Cell Phone

Nine-year-old writes hit iPhone app

You might think you're pretty hot stuff because you've figured out how to change your Facebook status from your iPhone, but you've got nothing on nine-year-old Lim Ding Wen.

This young prodigy from Singapore is fluent in six programming languages, according to a BBC report this week, and his newest creation, an iPhone drawing game called Doodle Kids, has racked up over 4,000 downloads in just two weeks. He wrote it for his younger sisters, who love to draw.

Telescope

Martian Crater Features Suggest Influence Of Water And Ice

Image
© UnknownBerman, along with PSI Senior Scientist David Crown and PSI Research Scientist Leslie Bleamaster III, surveyed the geologic features in two sets of mid-latitude craters. Each set included about 100 craters, with the first set in the Arabia Terra region of the northern hemisphere and the second set in an area east of Hellas basin (pictured) in the southern hemisphere.

Scientists at the Tucson-based Planetary Science Institute (PSI) have found further evidence for the large role that water has likely played in shaping the Martian landscape.

Their results, which will be published in Icarus, provide strong evidence that multiple wet and/or icy climate cycles have shaped the topography of the planet's large craters. Icarus is the journal of the American Astronomical Society's Division of Planetary Sciences.

"Studying crater degradation in potentially ice-rich environments is vital to understanding the geology of craters and their surroundings, as well as for determining whether the ice comes from the atmosphere or from below the ground," said Daniel Berman, a PSI associate research scientist and lead author of the paper.

Berman, along with PSI Senior Scientist David Crown and PSI Research Scientist Leslie Bleamaster III, surveyed the geologic features in two sets of mid-latitude craters.

Telescope

Seeing Down Tunnels

Image
© ESO/WFI (Optical); MPIfR/ESO/APEX/A.Weiss et al. (Submillimetre); NASA/CXC/CfA/R.Kraft et al. (X-ray)"Active galaxy" Centaurus A

Most modern telescopes, such as the Hubble Space Telescope, are afflicted with "tunnel vision": their fields of view are extremely narrow.

In this they reflect the mindset of the astronomers who use them. The narrow vision is justified by the assumption that celestial objects are isolated, and the assumption is justified by the vision that excludes outlying objects. As one pundit has remarked, "Inside this circular cage of logic the gerbil of astrophysics begins to run."

Meteor

Cosmic Exposure: System Interdependency Highlights Humanity's Vulnerability

Severe Space Weather
© National Academy of SciencesWhat if the May 1921 superstorm occurred today? A US map of vulnerable transformers with areas of probable system collapse encircled.
Did you know a solar flare can make your toilet stop working?

That's the surprising conclusion of a NASA-funded study by the National Academy of Sciences entitled Severe Space Weather Events - Understanding Societal and Economic Impacts. In the 132-page report, experts detailed what might happen to our modern, high-tech society in the event of a "super solar flare" followed by an extreme geomagnetic storm. They found that almost nothing is immune from space weather - not even the water in your bathroom.

The problem begins with the electric power grid. "Electric power is modern society's cornerstone technology on which virtually all other infrastructures and services depend," the report notes. Yet it is particularly vulnerable to bad space weather. Ground currents induced during geomagnetic storms can actually melt the copper windings of transformers at the heart of many power distribution systems. Sprawling power lines act like antennas, picking up the currents and spreading the problem over a wide area. The most famous geomagnetic power outage happened during a space storm in March 1989 when six million people in Quebec lost power for 9 hours (see image below).

Comment: The concept of interdependency goes way beyond how long power is down in Canada because the sun sneezed the day before. While it's encouraging to see the connection being made between solar storms and interruption to electricity networks, sadly the wider issue of cosmic interference in Earth's systems is ignored despite the alarming reports of fireballs and meteorites piercing the planet's lower atmosphere.

The effects from a cometary impact would cause substantially greater damage to our fragile systems, producing catastrophic "cascade failures" on an ecological and humanitarian scale. It's now fairly well established that this has happened several times within humanity's lifespan:
[...] the Holocene Impact Working Group - named for the period covering the last 20,000 years - have been proposing for years that several large objects from space hit the Earth with enough force to influence global climate within human history. Abbott estimates this happened perhaps five times in the last 6,000 years.
The increasing awareness that Earth meets cosmic storms on a regular basis is injecting some urgency into the issue:

UN is told that Earth needs an asteroid shield

US urged to prepare for asteroid strike

Asteroid and comet threat is a challenge to mankind

...but the signal is being drowned out by the noise generated by the twin hoaxes of the Global Pathocracy; Global Warming and the War on Terror.

Scientists note that incoming objects can produce very loud sounds, like the earth-shattering thunder that accompanied the Tunguska cometary explosion. Could the tremendous booms people are hearing be overhead explosions as space debris meets the atmosphere?

A recent chronology, by no means conclusive, of mysterious 'sonic' booms:

Feb 7th, Gold Coast, Australia

Feb 5th, Marco Island, Florida, USA

Jan 21st, Grand Island, Nebraska, USA

Jan 15th, North Carolina, USA

10th Jan, Louisiana, USA

5th Jan, Calgary, Canada

2nd Jan, Alaska, USA

30th Dec, South Carolina, USA

24th Dec, Iowa, USA

12th Nov, Indiana, USA

11th Nov, Arkansas, USA

5th Nov, New Zealand

Note how many are occurring / reported in the USA. Perhaps the Universe is trying to tell us something?


Einstein

Grandma's moistening kettle may have held off flu

Grandma may have been right about keeping a teakettle warming on the stove in winter to moisten the air. Studies of seasonal influenza have long found indications that flu spreads better in dry air. Now, new research being published Tuesday in Proceedings of the National Academy of Science, indicates that the key is the absolute humidity - which measures the amount of water present in the air, regardless of temperature - not the more commonly reported relative humidity.

Relative humidity varies depending on air temperature; absolute humidity doesn't.

"The correlations were surprisingly strong. When absolute humidity is low, influenza virus survival is prolonged and transmission rates go up," said Jeffrey Shaman, an Oregon State University atmospheric scientist who specializes in ties between climate and disease transmission

Telescope

Lunar Eclipse in Indian Mythology

Lunar eclipse was observed today in India. It was the first lunar eclipse of the year.

In India mythology lunar eclipses are thought to be a hugely important events, for they so suddenly reveal certain truths. They are non-negotiable too, so once you learn what you do, there's no going back. What's done is done.

It is said that lunar eclipses are extremely powerful events and often bring on life-changing events. Eclipses are never subtle, but rather they shout their news. Another hallmark of an eclipse is that they move up timetables dramatically. No matter what you thought you'd do, you'll probably have to revise your scheme.

The vedas are considered to be the ultimate authority by the Hindus, much like the New Testament and the Quran by the Christians and Muslims, respectively. The Rigveda is generally believed to be the oldest of all the four Vedas.

Eye 1

Keep an Eye on the TV - With the TV in Your Eye

Contact
© Dejak/AP
It sounds like science fiction - contact lenses that transmit TV shows and tattoos that let us feel the emotions of the actors on screen.

Yet experts believe both could be reality within ten years.

They say the constant miniaturisation of technology will lead to TV sets being shrunk to the size of contact lenses and powered by body heat.

Channels could be changed by voice commands or a wave of the hand, says a report on the future of home entertainment.

Robot

IRobot Co-Founder Greiner Launches Stealth Robotics Company, The Droid Works

Massachusetts' growing robotics cluster just got bigger. For the second time in less than six months, an iRobot co-founder has launched a robotics startup. Helen Greiner told me in an e-mail yesterday that she has formed a stealth company called The Droid Works. "Our first project is in the UAV [unmanned aerial vehicle] space, and a team of people from around the country are working on this project today," her short note said.