Polarization: From better sunglasses to a better way of looking at asteroid surfaces
Using the same principles that make polarized sunglasses possible, a team of researchers at the Arecibo Observatory in Puerto Rico have developed a technique that will help better defend against asteroids on a collision course with Earth......»»
Newly Spotted Asteroid Burns Up Over Philippines
Newly Spotted Asteroid Burns Up Over Philippines.....»»
More water worlds than we thought might support life
Too much water on exoplanet surfaces would mean high pressure ices, not life. Enlarge / High pressure ices near the crust are a feature of water-rich worlds.` (credit: Benoit Gougeon (University of Montreal)) The possibi.....»»
Small, harmless asteroid burns up in Earth"s atmosphere over the Philippines
A small asteroid discovered on Wednesday harmlessly burned up in Earth's atmosphere the same day, NASA said......»»
Few anti-immigration users dominate most UK-based Twitter anti-immigration content with rapid spread, high polarization
A study of more than 200,000 tweets from 2019 and 2020 finds that anti-immigration content spreads faster than pro-immigration tweets, and that a few users disproportionally generated most of the UK-based anti-immigration content. Andrea Nasuto and F.....»»
Gigantic asteroid impact shifted the axis of solar system"s biggest moon, study finds
Around 4 billion years ago, an asteroid hit the Jupiter moon Ganymede. Now, a Kobe University researcher has realized that the solar system's biggest moon's axis has shifted as a result of the impact, which confirmed that the asteroid was around 20 t.....»»
Engineers smash rocks to see what occurs when top layer of an asteroid-like object is hit with extreme external force
Johns Hopkins engineers have uncovered new details about how granular materials such as sand and rock behave under extreme impacts—findings that could someday help protect the Earth from dangerous asteroids......»»
Runners are used to toughing it out. A warming climate can make that deadly
Carolyn Baker, clad in a neon pink top and matching sunglasses, smiled as she ran the Falmouth Road Race on the shore of Cape Cod, looking around for friends as she neared the end of a race she'd completed more than a dozen times before......»»
Spin-controlled generation of a complete polarization set with randomly interleaved plasmonic metasurfaces
Optical metasurfaces are finely crafted two-dimensional artificial nanostructures composed of meticulously designed arrays of ultrathin artificial atoms. These surfaces possess capabilities beyond natural materials, enabling multifunctional control o.....»»
Complete-basis-reprogrammable coding metasurface for generating dynamically-controlled holograms
An article in Opto-Electronic Advances, discusses complete-basis-reprogrammable coding metasurface for generating dynamically-controlled holograms under arbitrary polarization states......»»
RISCPoint RADAR provides real-time vulnerability detection across multiple attack surfaces
RISCPoint Advisory Group launched RADAR, an all-in-one cybersecurity platform. Combining continuous threat discovery with expert-led Penetration Testing as a Service (PTaaS), RADAR represents a significant leap forward in proactive security and risk.....»»
Scientists create ultracompact polarization-entangled photon sources for miniaturized quantum devices
Scientists have created an ultra-thin light source that emits pairs of polarization-entangled photons. These specially correlated photons hold promise for future quantum technologies, including ultra-secure communication, powerful computation, and hi.....»»
NASA"s DART impact permanently changed the shape and orbit of asteroid moon, new study shows
When NASA's Double Asteroid Redirection Test (DART) spacecraft collided with an asteroid moon called Dimorphos in 2022, the moon was significantly deformed—creating a large crater and reshaping it so dramatically that the moon derailed from its ori.....»»
Low-cost flexible metasurfaces to increase the efficiency of optoelectronic devices
Metasurfaces are two-dimensional counterparts of metamaterials, which are artificial materials that possess unusual characteristics. With a variety of fascinatingly innovative and diverse uses, these specially-prepared surfaces with engineered patter.....»»
Correcting misperceptions of opposing party won"t reduce polarization, study finds
Political animus between Republicans and Democrats in the United States is alarmingly high, raising fears of undemocratic or even violent actions. An often-touted intervention to prevent political polarization is to identify and correct misperception.....»»
Against all odds, an asteroid mining company appears to be making headway
"It's not easy to ever raise for an asteroid mining company, right?" Enlarge / The Odin spacecraft passed vibration testing. (credit: Astro Forge) When I first spoke with space entrepreneurs Jose Acain and Matt Gialich a.....»»
Achieving enhanced energy storage performance and ultra-fast discharge time in tungsten-bronze ceramic
It is widely recognized that achieving high energy storage density and efficiency in ferroelectric ceramics relies on their ability to exhibit high saturation polarization and low residual polarization, which are essential for excellent energy storag.....»»
Polarization volume gratings break uniformity-efficiency tradeoff in AR waveguide displays
Augmented reality (AR) has evolved from a futuristic concept to a widespread technology, thanks to advancements in microdisplay technologies, ultracompact imaging optics, and high-speed digital processors......»»
An asteroid wiped out the dinosaurs, not a comet, new study finds
Analysis of ruthenium isotopes showed the impactor was a carbonaceous-type asteroid. Enlarge / Artist impression of a large asteroid impacting on Earth, such as the Chicxulub event that caused the end-Cretaceous mass extinction 6.....»»
NASA shuts down asteroid-hunting telescope, but a better one is on the way
The NEOWISE spacecraft is on a course to fall out of orbit in the next few months. Enlarge / Artist's illustration of NASA's Wide-field Infrared Survey Explorer spacecraft. (credit: NASA/JPL-Caltech) Last week, NASA deco.....»»
Research team finds evidence of hydration on the asteroid Psyche
Using data from NASA's James Webb Space Telescope, a Southwest Research Institute-led team has confirmed hydroxyl molecules on the surface of the metallic asteroid Psyche. The presence of hydrated minerals suggests a complex history for Psyche, impor.....»»