This is what fun looks like for a particular set of theoretical chemists driven to solve extremely difficult problems: Deciding whether the electromagnetic fields in molecular polaritons should be treated classically or quantum mechanically.
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Neutrinos are one of the most enigmatic particles in the standard model. The main reason is that they’re so hard to detect. Despite the fact that 400 trillion of them created in the sun are passing through a person’s body every second, they rarely interact with normal matter, making understanding anything about them difficult. To help solve their mysteries, a new neutrino detector in China recently started collecting data, and hopes to provide insight on between forty and sixty neutrinos a day for the next ten years.
When the Square Kilometer Array (SKA) Observatory goes online later this decade, it will create one of science’s biggest data challenges. The SKA Observatory is a global radio telescope project built in the Southern Hemisphere. There, views of our Milky Way are clearest and the SKA’s remote sites limit human-made radio interference.
Cornell Engineering researchers have demonstrated that, by zapping a synthetic thin film with ultrafast pulses of low-frequency infrared light, they can cause its lattice to atomically expand and contract billions of times per second—strain-driven “breathing” that could potentially be harnessed to quickly switch a material’s electronic, magnetic or optical properties on and off.
Authorities in Utah are preparing to file capital murder charges against Tyler Robinson, whose DNA matches samples found on a towel and screwdriver recovered near the scene
McCaysville Police Capt. Brantley Worley was shot and severely wounded while responding to a suspicious person call
Representatives for the U.S. Department of Homeland Security defend the face coverings, arguing that identifying officers subjects to them to retaliation and violence
Investigation found Broward Sheriff’s Office deputies waited at rally point while woman and child were murdered half a mile away
As real Bremerton officers handcuffed him, the man asked the officers to check his lunch bag for credentials; they found only an empty badge holder and Coca-Colas inside
Lasers aren’t just useful for entertaining cats or pointing out features of PowerPoint slides. They can also drill holes on icy extraterrestrial bodies from comets to Mars polar caps—at least, according to a new paper published in Acta Astronautica by researchers at the Technical University of Dresden, who describe a new laser drill for use on icy surfaces throughout our solar system.
President Donald Trump and his new interim head of NASA, Sean Duffy, are pushing for a renewed effort to shuffle off the responsibility of running the International Space Station in favor of becoming a customer of a commercial space station provider instead.
An international collaboration has developed a new diagnostic technique for measuring ultra-short particle beams at STFC’s Central Laser Facility. This collaboration is led by the University of Michigan and Queen’s University Belfast. The research addresses a key challenge in developing compact alternatives to kilometer-long particle accelerators.
According to a study by scientists from the Harvard-Smithsonian Center for Astrophysics (CfA), fast radio bursts that could be ‘signals from advanced alien civilizations’ are firing off every second in our universe. Astronomers have only found a couple of dozen FRBs (Fast Radio Bursts), and they still have not understood what causes these rapid and powerful radio broadcast bursts. Some say its aliens, while others say it’s a combination of different cosmic phenomena that are yet to be identified, but the truth is, we honestly don’t know what causes them. Now, for the first time ever, two astronomers at the Harvard-Smithsonian Center for Astrophysics (CfA) have estimated how many FRBs should occur throughout the observable universe. Their work indicates that at least one FRB is produced somewhere in the cosmos every second. “If we are right about such a high percentage of FRBs occurring at any given time, you can imagine the sky is filled with flashes like paparazzi taking photos of a celebrity,” said Anastasia Fialkov of the CfA, who led the study. “Instead of the light we can observe with our own eyes, these enigmatic flashes come in radio waves.” In order to come to this conclusion—which many are findings surprising—Fialkov and co-author Avi Loeb assumed that FRB 121102, a rapid radio burst located in a galaxy about 3 billion light-years from Earth, is ‘representative’ of all FRBs in the cosmos.  Due to the fact that this FRB has produced repeated bursts since it was discovered back in 2012, astronomers have been able to study it in much more detail than any other FRBs. Using that information, they calculated how many FRBs would exist throughout the known universe. “In the time it takes you to drink a cup of coffee, hundreds of FRBs may have gone off somewhere in the Universe,” said Avi Loeb. “If we can analyze even a portion of those well enough, we should be able to unravel their origin.” Experts are still not able to pinpoint the exact origin of FRBs, but most experts agree on the idea that FRBs originate in galaxies located billions of light-years away. One leading scientific theory is that FRBs are the byproducts of young, rapidly spinning neutron stars with extraordinarily strong magnetic fields. Scientists point out that FRBs can help us study the structure and evolution of our Universe, regardless of whether or not their origin is fully understood. A large population of FRBs could act as a probe of material across humongous distances. As noted by CfA, the intervening material is able to blur the signal from the cosmic microwave background (CMB)—which is the leftover radiation from the Big Bang. A careful analysis of this intervening material could provide an enhanced understanding of fundamental cosmic constituents, such as the relativistic quantities of ordinary matter, dark matter, and dark energy, which influence how rapidly the universe is expanding, and if of course, it is expanding at all. The research study authored by Fialkov and Loeb explaining these results was published in the September 10, 2017, issue of The Astrophysical Journal Letters, and is available online. Astronomers from Ruhr University Bochum in Germany and elsewhere have conducted radio spectropolarimetric observations of a recently identified odd radio circle designated ORC J0356–4216. Results of the observational campaign, presented Sept. 5 on the arXiv pre-print server, shed more light on the nature of this object.
Dark energy—the term used to describe whatever is causing the universe to expand at an increasing rate—is one of the universe’s greatest mysteries. The most widely accepted theory currently suggests that dark energy is constant, and the energy of empty space drives cosmic acceleration.
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