Supercomputer simulations have revealed that a type of oddly dim, exploding star is probably a class of duds—one that could nonetheless throw new light on the mysterious nature of dark energy.
A study using a unique new instrument on the world's largest optical telescope has revealed the likely origins of especially bright supernovae that astronomers use as easy-to-spot "mile markers" to measure the expansion and acceleration of the universe.
Time marches relentlessly forward for you and me; watch a movie in reverse, and you'll quickly see something is amiss. But from the point of view of a single, isolated particle, the passage of time looks the same in either direction. For instance, a movie of two particles scattering off of each other would look just as sensible in reverse – a concept known as time reversal symmetry.
Months of dedication and hard work in science, technology, engineering and mathematics (STEM) paid off tonight for three students named National Finalists in the Siemens Competition in Math, Science & Technology, the nation's premier research competition for high school students.
Physicist Stephon Alexander, the E.E. Just 1907 Professor and director of Dartmouth's E.E. Just Program, has been selected as the 2013 Edward A. Bouchet Award recipient by the American Physical Society (APS).
A fundamental cornerstone for spintronics that has been missing up until now has been constructed by a team of physicists at Linköping University in Sweden. It's the world's first spin amplifier that can be used at room temperature.
A new laboratory space at the University of Glasgow, officially opened today (Friday 16 November), will help develop the next generation of the technology which found evidence of the existence of the elusive Higgs boson.
A future quantum computer will be able to carry out calculations billions of times faster than even today's most powerful machines by exploit the fact that the tiniest particles, molecules, atoms and subatomic particles can exist in more than one state simultaneously. Scientists and engineers are looking forward to working with such high-power machines but so too are cyber-criminals who will be able to exploit this power in cracking passwords and decrypting secret messages much faster than they can now.
An experiment to look for one of nature's most elusive subatomic particles is finally underwater, in a stainless steel tank nearly a mile underground beneath the Black Hills of South Dakota. And among the dozens of scientists involved in the research collaboration is the University of Rochester's Professor Frank Wolfs.
A tiny fraction of meteorites on earth contain strikingly beautiful, translucent, olive-green crystals embedded in an iron-nickel matrix. Called pallasites, these "space gems" have fascinated scientists since they were first identified as originating from outer space more than 200 years ago.
Quantum mechanics offers the potential to create absolutely secure telecommunications networks by harnessing a fundamental phenomenon of quantum particles. Now, a team of Stanford physicists has demonstrated a crucial first step in creating a quantum telecommunications device that could be built and implemented using existing infrastructure.
Lawrence Livermore National Laboratory researchers are making key contributions to a physics experiment that will look for one of nature's most elusive particles, "dark matter," using a tank nearly a mile underground beneath the Black Hills of South Dakota.
Using tiny radiation pressure forces -- generated each time light is reflected off a surface -- University of Oregon physicists converted an optical field, or signal, from one color to another. Aided by a "dark mode," the conversion occurs through the coupling between light and a mechanical oscillator, without interruption by thermal mechanical vibrations.
By combining the power of NASA's Hubble and Spitzer space telescopes and one of nature's own natural "zoom lenses" in space, astronomers have set a new record for finding the most distant galaxy seen in the universe.
The aftershock of a stellar explosion rippling through space is captured in this new view of supernova remnant W44, which combines far-infrared and X-ray data from ESA's Herschel and XMM-Newton space observatories.