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Closing in on dark matter?

Physicists detect two candidate dark matter interactions, but say the data are not conclusive

Physics / General Physics

created Dec 18, 2009 | popularity 4.1 / 5 (14) | comments 6

(PhysOrg.com) -- Scientists have spent decades searching for the elusive material known as dark matter, which is believed to make up 25 percent of the universe. On Thursday, Dec. 17, a team of physicists including ...


Caltech scientists discover fog on Titan

Scientists discover fog on Titan

Space & Earth / Space Exploration

created Dec 18, 2009 | popularity 4.8 / 5 (8) | comments 2

Saturn's largest moon, Titan, looks to be the only place in the solar system—aside from our home planet, Earth—with copious quantities of liquid (largely, liquid methane and ethane) sitting on its surface. ...


Caltech scientists film photons with electrons

Caltech scientists film photons with electrons

Physics / General Physics

created Dec 16, 2009 | popularity 4.9 / 5 (20) | comments 0

(PhysOrg.com) -- Techniques recently invented by researchers at the California Institute of Technology -- which allow the real-time, real-space visualization of fleeting changes in the structure of nanoscale ...


Researchers revise long-held theory of fruit-fly development

Researchers revise long-held theory of fruit-fly development

Biology / Cell & Microbiology

created Dec 17, 2009 | popularity not rated yet | comments 0

For decades, science texts have told a simple and straightforward story about a particular protein—a transcription factor—that helps the embryo of the fruit fly, Drosophila melanogaster, pattern tissues in a m ...


Researchers find cells move in mysterious ways

Researchers find cells move in mysterious ways (w/ Video)

Biology / Cell & Microbiology

created Dec 16, 2009 | popularity 4 / 5 (2) | comments 0

Our cells are more like us than we may think. They're sensitive to their environment, poking and prodding deliberately at their surroundings with hand-like feelers and chemical signals as they decide whether ...


Caltech scientists discover aggression-promoting pheromone in flies

Scientists discover aggression-promoting pheromone in flies (w/ Video)

Biology / Plants & Animals

created Dec 06, 2009 | popularity 4 / 5 (10) | comments 1

Have you ever found yourself struggling to get your order taken at a crowded bar or lunch counter, only to walk away in disgust as more aggressive customers elbow their way to the front? It turns out that ...


A Superbright Supernova That’s the First of Its Kind

A Superbright Supernova That’s the First of Its Kind

Space & Earth / Astronomy

created Dec 02, 2009 | popularity 4.7 / 5 (24) | comments 6

(PhysOrg.com) -- An extraordinarily bright, extraordinarily long-lasting supernova named SN 2007bi, snagged in a search by a robotic telescope, turns out to be the first example of the kind of stars that first ...


Exploring energy efficiency in multi-scale computing systems

Exploring energy efficiency in multi-scale computing systems

Technology / Other

created Dec 16, 2009 | popularity 1 / 5 (1) | comments 0

The University of California, San Diego and nine other universities are members of a new research center charged with finding ways to improve the design of computing systems ranging from large data centers ...


Fine-tuned

Fine-tuned: A wholly new approach to tuning a laser's frequency

Physics / Optics & Photonics

created Dec 04, 2009 | popularity 4.5 / 5 (10) | comments 2

(PhysOrg.com) -- For more than 30 years, scientists have been trying to harness the power of terahertz radiation. Tucked between microwaves and infrared rays on the electromagnetic spectrum, terahertz rays ...


Caltech scientists explain puzzling lake asymmetry on Titan

Scientists explain puzzling lake asymmetry on Titan

Space & Earth / Space Exploration

created Nov 29, 2009 | popularity 4.4 / 5 (14) | comments 0

Researchers at the California Institute of Technology (Caltech) suggest that the eccentricity of Saturn's orbit around the sun may be responsible for the unusually uneven distribution of methane and ethane ...


Wizard at circuits, physics

Wizard at circuits, physics

Physics / General Physics

created Dec 03, 2009 | popularity 5 / 5 (13) | comments 0

(PhysOrg.com) -- Donhee Ham, Gordon McKay Professor of Electrical Engineering and Applied Physics, uses his personal energy and understanding of physics to design innovative integrated circuits.


Spitzer Telescope Observes Baby Brown Dwarf

Spitzer Telescope Observes Baby Brown Dwarf

Space & Earth / Astronomy

created Nov 23, 2009 | popularity 4.8 / 5 (13) | comments 0

(PhysOrg.com) -- NASA's Spitzer Space Telescope has contributed to the discovery of the youngest brown dwarf ever observed -- a finding that, if confirmed, may solve an astronomical mystery about how these ...


Scientists show how ubiquitin chains are added to cell-cycle proteins

Scientists show how ubiquitin chains are added to cell-cycle proteins

Biology / Cell & Microbiology

created Dec 02, 2009 | popularity 4.7 / 5 (3) | comments 0

Researchers from the California Institute of Technology (Caltech) have been able to view in detail, and for the first time, the previously mysterious process by which long chains of a protein called ubiquitin ...


Scientists develop DNA origami nanoscale breadboards for carbon nanotube circuits

Scientists develop DNA origami nanoscale breadboards for carbon nanotube circuits

Nanotechnology / Nanomaterials

created Nov 10, 2009 | popularity 5 / 5 (7) | comments 0

In work that someday may lead to the development of novel types of nanoscale electronic devices, an interdisciplinary team of researchers at the California Institute of Technology has combined DNA's talent ...


Scientists find emotion-like behaviors, regulated by dopamine, in fruit flies

Medicine & Health / Neuroscience

created Nov 25, 2009 | popularity 5 / 5 (3) | comments 1

Scientists at the California Institute of Technology have uncovered evidence of a primitive emotion-like behavior in the fruit fly, Drosophila melanogaster. Their findings, which may be relevant to the relationship betwee ...