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Over the past few decades, researchers have identified a number of superconducting materials with atypical properties, known as unconventional superconductors. Many of these superconductors share the same anomalous charge transport properties and are thus collectively characterized as “strange metals.”

Researchers at the University of California, Berkeley (UC Berkeley) and Los Alamos National Laboratory have been investigating the anomalous transport properties of strange metals, along with several other teams worldwide. In a recent paper published in Nature Physics, they showed that in one of these materials, BaFe2(As1− xPx)2, superconductivity and quantum criticality are linked by what is known as the Hall effect.

For decades, physicists have been unable to fully understand T-linear resistivity, a signature of strange metals that has often been observed in many unconventional superconductors. In 2016, the team at UC Berkeley and Los Alamos National Lab observed an unusual scaling relationship between the and temperature in superconductor BaFe2(As1− xPx)2.

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O,.o.

“It’s going to take four to five years until everyone gets the vaccine on this planet,” Adar Poonawalla, chief executive of the Serum Institute of India, told the newspaper.

Dragging down the feasibility, Poonwalla says that such a vaccine would likely need to include a second booster shot, like for the measles or rotavirus vaccine. That would mean 15 billion doses in total for the entire globe.

“I know the world wants to be optimistic on it… [but] I have not heard of anyone coming even close to that [level] right now,” Poonawalla added.

Continue reading “There Won’t Be Enough COVID Vaccines for Everybody Until 2024, Warn Vaccine Makers” | >

The twisting patterns created by the multiple spiral arms of NGC 2835 create the illusion of an eye. This is a fitting description, as this magnificent galaxy resides near the head of the southern constellation of Hydra, the water snake. This stunning barred spiral galaxy, with a width of just over half that of the Milky Way, is brilliantly featured in this image taken by the NASA /ESA Hubble Space Telescope. Although it cannot be seen in this image, a supermassive black hole with a mass millions of times that of our Sun is known to nestle in the very center of NGC 2835.

This galaxy was imaged as part of PHANGS-HST, a large galaxy survey with Hubble that aims to study the connections between cold gas and young stars in a variety of galaxies in the local Universe. Within NGC 2835, this cold, dense gas produces large numbers of young stars within large star formation regions. The bright blue areas, commonly observed in the outer spiral arms of many galaxies, show where near-ultraviolet light is being emitted more strongly, indicating recent or ongoing star formation.

Expected to image over 100 000 gas clouds and star-forming regions outside our Milky Way, this survey hopes to uncover and clarify many of the links between cold gas clouds, star formation and the overall shape and morphology of galaxies. This initiative is a collaboration with the international Atacama Large Millimeter/submillimeter Array (ALMA) and the European Southern Observatory’s Very Large Telescopes MUSE instrument, through the greater PHANGS program (PI: E. Schinnerer).

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Blue Origin’s human lunar lander all-star space team completes first key milestone for moon mission – TechCrunch.

Blue Origin, along with it partners Lockheed Martin, Northrop Grumman and Draper, was one of three companies to be awarded contracts by NASA to develop human lunar landers for future moon missions. Blue Origin’s so-called “National Team” is focused on developing a Human Landing System (HLS) for NASA to support its efforts to return human astronauts to the surface of the moon by 2024, and today it announced that along with its partners, it has achieved the first crucial step of defining the requirements of the mission, including any space and ground vehicles used.

This is a key first step, which amounts to having established a checklist of thousands of items that will make up the parameters of the National Team’s HLS mission. It means that the company can now move ahead to further NASA reviews (it has already agreed with the agency on a number of the proposed design and build standards) and ultimately, the preliminary design phase.

Blue Origin and its partners won’t be starting from scratch with their design, which is one advantage to the Bezos –founded space company working with established industry partners like Lockheed, Northrop and Draper. They’re “evolving” much of their landing system design from existing spacecraft including Orion, the reusable spacecraft that will take NASA’s astronauts from Earth back to the moon via the Artemis program, which was built in part by Lockheed Martin.

Continue reading “Blue Origin’s human lunar lander all-star space team completes first key milestone for moon mission” | >

In the first experiment to take advantage of a new technology for producing powerful attosecond X-ray laser pulses, a research team led by scientists from the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University showed they can create electronic ripples in molecules through a process called “impulsive Raman scattering.”

Exploiting this unique interaction will allow scientists to study how electrons zipping around kick off key processes in biology, chemistry, materials science and more. The researchers described their results in Physical Review Letters.

Typically, when X-ray pulses interact with matter the X-rays cause the molecules’ innermost “core” electrons to jump to higher energies. These core-excited states are highly unstable, decaying in just millionths of a billionth of a second. In a majority of X-ray experiments, that’s how the story ends: The excited electrons quickly return to their rightful places by transferring their energy to a neighboring electron, forcing it out of the atom and producing a charged ion.

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