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Tuesday, March 20, 2012

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News

Biplane to break the sound barrier: Cheaper, quieter and fuel-efficient biplanes could put supersonic travel on the horizon

Posted: 19 Mar 2012 01:38 PM PDT

A researcher has come up with a concept that may solve many of the problems that grounded the Concorde. An assistant professor of aeronautics and astronautics, says the solution, in principle, is simple: Instead of flying with one wing to a side, why not two?

Experients may force revision of astrophysical models of the universe

Posted: 19 Mar 2012 12:11 PM PDT

In a challenge to current astrophysical models of the universe, researchers have found that current estimates of the interiors of so-called ice giant planets within and without the solar system overstate water's compressibility by as much as 30 percent, forcing revisions in estimates of other elements.

Geologic map of Jupiter's moon Io details an otherworldly volcanic surface

Posted: 19 Mar 2012 12:11 PM PDT

More than 400 years after Galileo's discovery of Io, the innermost of Jupiter's largest moons, a team of scientists has produced the first complete global geologic map of the Jovian satellite.

Cosmic rays alter chemistry of lunar ice, may create building blocks of life

Posted: 19 Mar 2012 10:52 AM PDT

Space scientists report they have quantified levels of radiation on the moon's surface from galactic cosmic ray (GCR) bombardment that over time causes chemical changes in water ice and can create complex carbon chains similar to those that help form the foundations of biological structures. In addition, the radiation process causes the lunar soil, or regolith, to darken over time, which is important in understanding the geologic history of the moon.

Polycrystalline diamond drill bits open up options for geothermal energy

Posted: 19 Mar 2012 10:52 AM PDT

Nearly two-thirds of the oil we use comes from wells drilled using polycrystalline diamond compact bits, originally developed nearly 30 years ago to lower the cost of geothermal drilling. Scientists recently brought the technology full circle, showing how geothermal drillers might use the original PDC technology, incorporating decades of subsequent improvements by the oil and gas industry.

Including ads in mobile apps poses privacy, security risks

Posted: 19 Mar 2012 08:17 AM PDT

Researchers have found that including ads in mobile applications poses privacy and security risks. In a recent study of 100,000 apps in the official Google Play market, researchers noticed that more than half contained so-called ad libraries. And 297 of the apps included aggressive ad libraries that were enabled to download and run code from remote servers -- which raises significant privacy and security concerns.

Some orbits more popular than others in solar systems

Posted: 19 Mar 2012 08:16 AM PDT

Computer simulations have revealed a plausible explanation for a phenomenon that has puzzled astronomers: Rather than occupying orbits at regular distances from a star, giant gas planets similar to Jupiter and Saturn appear to prefer to occupy certain regions in mature solar systems while staying clear of others.

Looking at quantum gravity in a mirror

Posted: 18 Mar 2012 11:40 AM PDT

Einstein's theory of gravity and quantum physics are expected to merge at the Planck-scale of extremely high energies and on very short distances. Now scientists have proposed a new quantum experiment using Planck-mass mirrors.
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