News About Time And Space
February 12, 2017
Measuring time without a clock
Lausanne, Switzerland (SPX) Feb 10, 2017
EPFL scientists have been able to measure the ultrashort time delay in electron photoemission without using a clock. The discovery has important implications for fundamental research and cutting-edge technology. When light shines on certain materials, it causes them to emit electrons. This is called "photoemission" and it was discovered by Albert Einstein in 1905, winning him the Nobel Prize. But only in the last few years, with advancements in laser technology, have scientists been able to approa ... read more

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Stars align in test supporting 'spooky action at a distance'
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Middleweight Black Hole Hiding in Giant Star Cluster
All known black holes fall into two categories: small, stellar-mass black holes weighing a few Suns, and supermassive black holes weighing millions or billions of Suns. Astronomers expect that inter ... more
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Black Hole Meal Sets Record for Duration and Size
A giant black hole ripped apart a star and then gorged on its remains for about a decade, according to astronomers. This is more than 10 times longer than any observed episode of a star's death by b ... more
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Shaken, but not stirred
A team of researchers led by Ludwig-Maximilians-Universitaet (LMU) in Munich physics professor Immanuel Bloch has experimentally realized an exotic quantum system which is robust to mixing by period ... more
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Quantum phase transition observed for the first time
A group of scientists led by Johannes Fink from the Institute of Science and Technology Austria (IST Austria) reported the first experimental observation of a first-order phase transition in a dissi ... more
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Research pushes concept of entropy out of kilter
Entropy, the measure of disorder in a physical system, is something that physicists understand well when systems are at equilibrium, meaning there's no external force throwing things out of kilter. ... more
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Study reveals substantial evidence of holographic universe
A UK, Canadian and Italian study has provided what researchers believe is the first observational evidence that our universe could be a vast and complex hologram. Theoretical physicists and astrophy ... more
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'Ghost particles' could improve understanding the universe
Trillions of neutrinos, or ghost particles, are passing through us every second. While scientists know this fact, they don't know what role neutrinos play in the universe because they are devilishly ... more
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How fast is the universe expanding? Quasars provide an answer
The H0LiCOW collaboration, a cosmology project led by EPFL and Max Planck Institute and regrouping several research organizations in the world has made a new measurement of the Hubble constant, whic ... more
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PPPL scientist uncovers physics behind plasma-etching process
Physicist Igor Kaganovich at the Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) and collaborators have uncovered some of the physics that make possible the etching of silico ... more
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Boron atoms stretch out, gain new powers
Hold on, there, graphene. You might think you're the most interesting new nanomaterial of the century, but boron might already have you beat, according to scientists at Rice University. A Rice ... more
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Toward a practical nuclear pendulum
Researchers from Ludwig-Maximilians-Universitaet (LMU) Munich have, for the first time, measured the lifetime of an excited state in the nucleus of an unstable element. This is a major step toward a ... more
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Scientists unveil new form of matter: Time crystals
To most people, crystals mean diamond bling, semiprecious gems or perhaps the jagged amethyst or quartz crystals beloved by collectors. To Norman Yao, these inert crystals are the tip of the iceberg ... more
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Astronomers measure universe expansion, get hints of 'new physics'
Astronomers have just made a new measurement of the Hubble Constant, the rate at which the universe is expanding, and it doesn't quite line up with a different estimate of the same number. That disc ... more
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Faster-than-Expected Expansion of the Universe Supported
By using galaxies as giant gravitational lenses, an international group of astronomers including researchers at the Max Planck Institute for Astrophysics have made an independent measurement of how ... more
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Can the donut-shaped magnet 'CAPPuccino submarine' hunt for dark matter?
Scientists at the Center for Axion and Precision Physics Research (CAPP), within the Institute for Basic Science (IBS) optimized some of the characteristics of the magnet to hunt for one possible co ... more
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Magnetic moment of a single antiproton determined with greatest precision ever
As self-evident as it is that matter exists, its origins are just as mysterious. According to the principles of particle physics, when the universe was originally formed equal amounts of matter and ... more
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Traffic jam in empty space
With these results, the researchers from the field of ultrafast phenomena and photonics build on their earlier findings, published in October 2015 in the scientific journal Science, where they have ... more
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Light source discovery 'challenges basic assumption' of physics
A widely-held understanding of electromagnetic radiation has been challenged in newly published research led at the University of Strathclyde. The study found that the normal direct correspondence b ... more
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Seeing the quantum future literally
Scientists at the University of Sydney have demonstrated the ability to "see" the future of quantum systems, and used that knowledge to preempt their demise, in a major achievement that could help b ... more
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Our galaxy's black hole is spewing out planet-size 'spitballs'
Every few thousand years, an unlucky star wanders too close to the black hole at the center of the Milky Way. The black hole's powerful gravity rips the star apart, sending a long streamer of gas wh ... more
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CU Boulder to lead operations for NASA black holes mission
University of Colorado Boulder students and professionals will operate an upcoming NASA mission that will investigate the mysterious aspects of some of the most extreme and exotic astronomical objec ... more
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LIGO expected to detect more binary black hole mergers
The Laser Interferometer Gravitational-wave Observatory (LIGO) broke the news almost one year ago when the first-ever direct observation of gravitational waves was announced. Now LIGO scientists hop ... more
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Venerable Radio Telescope Sets Standard for Universal Constant
About 150 hours of observing time on the 1,000-ft radio telescope at the Arecibo Observatory in Puerto Rico over the course of the last several years have been devoted to determining whether the mos ... more
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Deepest X-ray image ever reveals black hole treasure trove
An unparalleled image from NASA's Chandra X-ray Observatory is giving an international team of astronomers the best look yet at the growth of black holes over billions of years beginning soon after ... more
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