slew writes: A team led by Case Western Reserve University researchers has found a significant new relationship in spiral and irregular galaxies: the acceleration observed in rotation curves tightly correlates with the gravitational acceleration expected from the visible mass only.
This correlation appears to be true of galaxies that would be apparently dominated by "halos" of dark matter in the current standard models which include dark matter to explain the mass/rotational anomalies in such galaxies.
The observations that enabled this result are the infrared measurements by the Spitzer space telescope which are considered more accurate indicators of stellar mass.
Unfortunately this new result does nothing to explain the observation of galactic expansion or apparent dark energy. So it is probably premature to throw in the towel, but hey settled science is too boring;^)
slew writes: Although last year saw the first LHC observations of pentaquark particles, apparently there are indeed tetraquark particles too! And the LHC found four of them (coincidence?) Even more interesting, although they apparently each have a unique internal structure, mass and their own sets of quantum numbers, all of the four particles apparently contain the same quark composition (charm,anti-charm,strange,anti-strange). Weird stuff;^)
slew writes: If it wasn't enough that inside a box, you can have a half alive, half dead cat, apparently you can split a quantum mechanical "cat" into two boxes and through the wonders of quantum entanglement, you might be able kill two cats with one stone...
Okay, they didn't use real cats, or boxes (just a microwaves in a resonator cavity), but they performed an actual experiment, not just a thought experiment.
Apparently, this entertaining research might have some actual practical uses for circuit quantum electrodynamics (cQED) in some sort of boring (yawn) quantum computer error correction capacity, someday... But I'm still waiting for the real cat experiment...
Eloking writes: The first attempt to inflate the Bigelow Expandable Activity Module (BEAM) attached to the International Space Station (ISS) ended in failure today as astronauts and engineers assess the situation. At 6:10 am EDT, NASA astronaut Jeff Williams partially inflated the experimental habitat module docked to the station's' Tranquility module in what should have been 45-minute operation, but despite several hours of work, the balloon-like fabric only expanded a few inches instead of the planned several feet.
slew writes: Unlike its more famous carbon cousins: diamonds and fullerenes, you've probably never heard of M-Carbon, but this form of compressed graphite which is as hard as diamonds has baffled researcher for half a century. Over the past few years, many theoretical computations have suggested at least a dozen different crystal structures for this phase of carbon, but new experiments showed that only one crystal structure fits the data: M-carbon.
slew writes: Scientist at Griffith University have shown the first absorption image of a single atom isolated in a vacuum. A single atomic ion was confined in an RF Paul trap and the absorption imaged at near wavelength resolution with a phase Fresnel lens.
They predict this absorbption imaging technique should prove useful in quantum information processing and using the minimum amount of illumination for bio-imaging of light-sensitive samples.
slew writes: Okay, so for the owners of the new self-parking prius, this might be obsolete, but for the rest of us car-challenged geeks, someone has gone through the trouble to figure out if that parallel parking space is gonna work or not (or if we have to give one of the cars a "love-tap" to snuggle in there)