Rubin Observatory"s 3.5-meter secondary mirror installed
Vera C. Rubin Observatory's 3.5-meter secondary mirror has been installed on the Simonyi Survey Telescope on Cerro Pachón in Chile. The glass mirror—made by Corning Advanced Optics and polished by L3Harris Technologies—is the first permanent com.....»»
Researchers discover cause of initial spike in immune response when pathogens attack plants
When pathogens attack plants, the plant cells almost immediately react. The plant's cells begin to produce different kinds of small molecules called secondary messengers. These messengers travel throughout the cell membrane to begin the process of ac.....»»
The United States cellular network struggled the morning of February 22
It's not just you — AT&T, T-Mobile, and Verizon were having issues across a wide swathe of the US, but the issue seems to have been resolved.A 5G signal meter on an iPhone 12So far, it's not clear why T-Mobile, AT&T, and Verizon are all having issu.....»»
LHAASO discovers giant ultra-high-energy gamma-ray bubble, identifying the first super PeVatron
The Large High Altitude Air Shower Observatory (LHAASO) has discovered a giant ultra-high-energy gamma-ray bubble structure in the Cygnus star-forming region, which is the first time that the origin of cosmic rays with energy higher than 10 Peta-Elec.....»»
The United States cellular network is struggling this morning
It's not just you — AT&T, T-Mobile, and Verizon are having issues across a wide swathe of the US this morning.A 5G signal meter on an iPhone 12So far, it's not clear why T-Mobile, AT&T, and Verizon are all having issues this morning. Symptoms vary,.....»»
Study investigates chemical composition of metal-poor star HD 1936
Using the Ankara University Kreiken Observatory (AUKR) in Turkey, astronomers have performed high-resolution spectroscopic observations of a metal-poor star known as HD 1936. Results of the observations campaign, published February 15 on the preprint.....»»
How to revert macOS to the previous version
There are several reasons why you might want to revert to an older version of macOS than the version currently installed on a Mac. Here's how to do it.A macOS installation can be reverted to an earlier release. Apple updates macOS, the operating syst.....»»
Introducing competition between schools involves a lot of work and major costs, Swedish study shows
After the introduction of the freedom to choose between upper secondary schools in 1992, it took nearly 10 years for upper secondary school heads in a municipality to start seeing themselves as competitors for school students. Any analysis of change.....»»
Vera Rubin"s keen eye on our solar system will inspire future missions
When the interstellar object (ISO) 'Oumuamua appeared in our solar system in 2017, it generated a ton of interest. The urge to learn more about it was fierce, but unfortunately, there was no way to really do so. It came and went, and we were left to.....»»
Into the belly of the rover: VIPER"s final science instrument installed
A team of engineers is preparing to integrate TRIDENT—short for The Regolith Ice Drill for Exploring New Terrain—into the belly of NASA's first robotic moon rover, VIPER (Volatiles Investigating Polar Exploration Rover)......»»
Windows 11 24H2 goes from “unsupported” to “unbootable” on some older PCs
New Windows version needs CPU features that became common in the late 00s. Enlarge / We've installed Windows 11 on systems as old as this Core 2 Duo Inspiron tower. As of version 24H2, the OS may no longer be bootable on these sy.....»»
Traces of Stone Age hunter-gatherers discovered in the Baltic Sea
In autumn 2021, geologists discovered an unusual row of stones, almost 1 km long, at the bottom of Mecklenburg Bight. The site is located around 10 kilometers off Rerik at a 21-meter water depth. The approximately 1,500 stones are aligned so regularl.....»»
Scientists identify water molecules on asteroids for the first time
Using data from the retired Stratospheric Observatory for Infrared Astronomy (SOFIA)—a joint project of NASA and the German Space Agency at DLR—Southwest Research Institute scientists have discovered, for the first time, water molecules on the su.....»»
Chinese astronomers find radio pulsar in a supernova remnant
Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), astronomers from the Nanjing University in China and elsewhere, have detected a radio pulsar in a supernova remnant known as CTB 87. The finding is reported in a paper published.....»»
NASA’s New PACE Observatory Searches for Clues to Humanity’s Future
They may be tiny, but phytoplankton and aerosols power pivotal Earth systems. Scientists are about to learn a whole lot more about them at a critical time......»»
Whether of politicians, pop stars or teenage girls, sexualized deepfakes hold a mirror to our sexist world
Victorian MP Georgie Purcell recently spoke out against a digitally edited image in the news media that had altered her body and partially removed some of her clothing......»»
Telescopes show the Milky Way"s black hole is ready for a kick
The supermassive black hole in the center of the Milky Way is spinning so quickly it is warping the spacetime surrounding it into a shape that can look like a football, according to a new study using data from NASA's Chandra X-ray Observatory and the.....»»
iPhone 15/14/13/12 Says No SIM? 8 Workable Solutions Here
It is frustrating when you want to call someone, but the No SIM Card Installed error message keeps popping up on your iPhone, causing you not to make calls! Well, aside from that, having this error on your iPhone means you can’t also receive calls.....»»
ALMA gets a new hydrogen maser
The Atacama Large Millimeter/submillimeter Array (ALMA) has just received a "heart transplant," high in the Atacama Desert in Northern Chile. ALMA, the most complex astronomical observatory ever built on Earth, installed a new hydrogen maser. This up.....»»
Secondary eyewall formation in upper- and lower-layer vertical wind shear simulated in idealized tropical cyclones
About 80% of intense tropical cyclones (TCs) possess concentric eyewalls—namely, the primary and secondary eyewalls. The intensity of the TC can vary considerably during secondary eyewall formation (SEF) and eyewall replacement, posing a great chal.....»»
Researchers analyze career pathways for gifted girls
Compared to boys, girls often excel in their secondary education results—but even the most gifted students may struggle to find their "dream job" and follow the best career path, pay grades and workplace progression to become leaders in their field.....»»