Theorists are in a frenzy over “fractons,” bizarre, but potentially useful, hypothetical particles that can only move in combination with one another.
Majoranas particles found.
Majorana particles have been getting bad publicity: a claimed discovery in ultracold nanowires had to be retracted. Now Leiden physicists open up a new door to detecting Majoranas in a different experimental system, the Fu-Kane heterostructure, they announce in Physical Review Letters.
Majorana particles are quasiparticles: collective movements of particles (electrons in this case) which behave as single particles. If detected in real life, they could be used to build stable quantum computers.
“Majoranas are quantum mechanical superpositions,” explains Gal Lemut. This superposition, a special kind of combination, comprises an electron and a hole (a place in a crystal where an electron is missing.
Russia, China and other adversaries are launching attacks designed to damage or destroy US satellites and interfere with that critical infrastructure. CNN’s Jim Sciutto gets an exclusive look into how Space Force is fighting every day to defend against these technologies.
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After stacking the stages of the Space Launch System (SLS) rocket for NASA’s Artemis 1 mission in June and July, EGS and TOSC powered up the Core Stage for the first time in the Vehicle Assembly Building (VAB) at the Kennedy Space Center (KSC) in Florida on August 6. The initial power up was a significant milestone in pre-launch processing, marking the beginning of the systematic checkouts of the vehicle and ground systems that will be used for the first launch on Artemis 1.
Just prior to powering up the Core Stage, the four umbilicals that connect ground services from the Mobile Launcher were attached to quick disconnect plates on the stage’s three major equipment bays: the forward skirt, intertank, and engine section. The Integrated Operations team of EGS and Jacobs and the SLS prime contractors are working almost around clock in the VAB to get through all the installations, checkouts, and special tests in time for a launch no earlier than the end of 2,021 but more likely in early 2022.
I ran out of superlatives already yesterday — it is just so hard to realize that this is really happening!
Great photo by RGV Aerial Photography!
Probiotics help prevent some infections in this study.
However, relatively little is known about the mechanisms used by Listeria to cross the intestinal barrier. Understanding more about the way Listeria spreads around the body would allow us to consider strategies for preventing infection in high-risk populations.
At Purdue University in Indiana, USA, Professor Arun Bhunia, Dr Rishi Drolia and the team are researching the mechanisms of pathogenesis (development of disease) used by Listeria to enter the bloodstream.
Chinese scientists have produced a 3D map of an entire rhesus monkey brain, which is 200 times larger than a mouse brain, at a resolution of just 0.001 mm (1 micron).
Seeing the environmental crises rising particularly because of the construction sector, more conscious choices regarding building materials need to be considered. Since the beginning of our craft, architects and constructors have been trying to utilize natural materials in buildings—either used in their raw form, like bamboo, or processed and incorporated into different materials. Hempcrete is one type of concrete incorporating natural materials; it is energy-saving and durable.
The service’s algorithm for cropping photos favors people with slimmer, younger faces and lighter skin.
SpaceX’s Starship rocket is gearing up for its most ambitious test yet, and CEO Elon Musk has shared images of the rocket stacked up.