Alternative theory of gravity explains large structure formation -- without dark matter
Dec 14, 2006 |
4.5 / 5 (193) |
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In the standard theory of gravity—general relativity—dark matter plays a vital role, explaining many observations that the standard theory cannot explain by itself. But for 70 years, cosmologists have never ...
Very high frequency radiation makes dark matter visible
Dec 14, 2006 |
4.4 / 5 (49) |
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The stars and gas which are seen in galaxies account for only a few percent of the gravitating material in the Universe. Most of the rest has remained stubbornly invisible and is now thought to be made of a ...
Researchers predict a new state of matter in semiconductors
Dec 14, 2006 |
4.4 / 5 (30) |
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Conventional matter exists in three familiar forms-solid, liquid and gas. But under special circumstances, quantum theory predicts exotic states of matter, such as superconductors in which electrons flow with no resistance ...
Physicist: Stars can be strange
Dec 14, 2006 |
4 / 5 (26) |
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According to the "Strange Matter Hypothesis," which gained popularity in the paranormal 1980's, nuclear matter, too, can be strange. The hypothesis suggests that small conglomerations of quarks, the infinitesimally ...
Venus Express sees right down to the hell-hot surface
Dec 14, 2006 |
4.5 / 5 (20) |
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Thanks to ESA’s Venus Express data, scientists obtained the first large-area temperature maps of the southern hemisphere of the inhospitable, lead-melting surface of Venus.
Microbe fixes nitrogen at a blistering 92 C
Space & Earth / Earth Sciences
Dec 14, 2006 |
4.5 / 5 (20) |
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A heat-loving archaeon capable of fixing nitrogen at a surprisingly hot 92 degrees Celsius, or 198 Fahrenheit, may represent Earth’s earliest lineages of organisms capable of nitrogen fixation, perhaps even ...
Taking nanolithography beyond semiconductors
Nanotechnology / Nanomaterials
Dec 14, 2006 |
3.9 / 5 (22) |
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A new process for chemical patterning combines molecular self-assembly with traditional lithography to create multifunctional surfaces in precise patterns at the molecular level. The process allows scientists ...
Stardust findings override some commonly held astronomy beliefs
Dec 14, 2006 |
4.4 / 5 (16) |
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Contrary to a popular scientific notion, there was enough mixing in the early solar system to transport material from the sun's sizzling neighborhood and deposit it in icy deep-space comets. It might have been ...
Researchers produce insulation with lowest thermal conductivity ever
Dec 14, 2006 |
4.1 / 5 (17) |
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A new insulation material with the lowest thermal conductivity ever measured for a fully dense solid has been created at the University of Oregon and tested by researchers at three other U.S. institutions. While far from ...
Scientists propose alternate model for plume on Enceladus
Dec 14, 2006 |
4.2 / 5 (14) |
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CHAMPAIGN, Ill. — What's causing all the commotion on Enceladus? Last year, when the Cassini spacecraft discovered an enormous plume erupting on Enceladus, one of Saturn's moons, scientists speculated that ...
New transcription reveals Newton's rare 'theory of everything'
Dec 14, 2006 |
3 / 5 (18) |
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A new transcription of Isaac Newton's "theory of everything," providing rare insight into the scientist's views on nearly all known natural phenomena, is now available online to scholars around the world, thanks to an Indiana ...
In Granular System, Tiniest Grains Absorb Shocks 'Like a Sponge'
Dec 14, 2006 |
4.7 / 5 (11) |
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A University at Buffalo theoretical physicist who published research in 2001 demonstrating that it someday may be possible to build bridges, buildings and other structures that are nearly blast-proof, now has ...
New Technologies Improve Video Surveillance
Technology / Computer Sciences
Dec 14, 2006 |
3.5 / 5 (12) |
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Surveillance cameras are sprouting up in more and more places, forming an ever more powerful tool for solving crimes after they happen. But what about using them to prevent or stop criminal and terrorist acts? This requires ...
Massive gun 'buyback' doubled fall in Australian gun deaths
Dec 14, 2006 |
2.8 / 5 (14) |
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The chances of gun death in Australia dropped twice as steeply after 700,000 guns were destroyed in a national firearm ‘buyback’ and amnesty, reveals a decade long study in Injury Prevention.
Discovery sheds new light on cause of earthquakes
Space & Earth / Earth Sciences
Dec 14, 2006 |
4.4 / 5 (8) |
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Research at the University of Liverpool into a large fault zone in the Atacama Desert in northern Chile has produced new insight into how fluid pressure can cause earthquakes.
