Apple said Golden Gate (macOS 27) will be released on Sept 14th (Next Monday). Howard Oakley wrote a nice explainer for what a user should do to get ready for it.
Ancient meteorite minerals reveal a surprisingly strong magnetic field from the solar system’s first 200,000 years. About 4.6 billion years ago, before the Sun and planets existed in their familiar forms, the solar system was a vast cloud of gas and dust. Within a few million years, this “solar nebula” collapsed and flattened into a [...]
Wrinkles on the surface of Mercury have revealed that the closest planet to the sun is shrinking faster than scientists thought.
New research suggests that Mercury is shrinking between 10% and 30% faster than had been previously estimated. The team behind this research calculated that the planet has lost nearly 12 miles (19 kilometers) of its total diameter since it formed.
The researchers think that the extremity of this shrinking has gone unnoticed previously because bombardment from space rocks over time has created craters that obscured the evidence of this process.
Scientists say determining the extent of the shrinking of Mercury is key to investigating the composition of the planet's interior.
"More shrinking means Mercury could have a larger metal core, less light elements like silicon mixed into the metal core, or a higher starting temperature," team leader Gaku Nishiyama, of the German Aerospace Center (DLR) Institute of Space Research said in a statement.
Mercury's rocky past
Like all rocky planets in the solar system, Mercury was formed 4.5 billion years ago during a violent and turbulent time in the solar system's history, as rocks and asteroids collided with each other and were bound together.
These impacts generated heat, which Mercury has been losing ever since. As the interior of Mercury cooled, it also shrank. This caused geological wrinkles in the form of scarps and ridges to develop in the rocky outer layers of Mercury.
This cooling should result in Mercury shrinking in a roughly uniform way, and that would make these shortening structures common across the planet. However, asteroid impacts throughout its history have not only created craters that obscure signs of its geological history, but have also spread debris across the surface of Mercury. This makes wrinkles tougher to spot among the accumulation of billions of years' worth of geological features.
NASA's Messenger spacecraft spots an apparently fresh crater on Mercury during its early orbits on March 29, 2011. (Image credit: NASA/JHUAPL/CIW)
The team combined previous maps of Mercury's geology with new observations of the entire planet's surface roughness. They found the roughest terrain of Mercury featured the fewest wrinkles.
"It made us think that there's a process obscuring shortening structures," said Nishiyama, who thinks that impact debris in the roughest regions of Mercury is covering shrinking wrinkles.
The team then used the ridges and scarps in regions less affected by the dispersal of debris to estimate the amount of contraction. This indicated that missing features in rough areas could amount to 10% to 30% extra shrinkage over the 4.5 billion-year lifetime of Mercury. That amounts to a total change in diameter of up to 14.5 miles (23 kilometers) rather than the currently estimated 2.5 to 10 miles (4 to 16 kilometers).
"30% is a little bit surprising, but the corrected amount of contraction actually makes sense to me," Nishiyama said.
An illustration of NASA's MESSENGER probe over the surface of Mercury (Image credit: NASA/JHU-APL)
There may be more surprises in store. Nishiyama believes that the updated figures could still be an underestimate. This estimate is based on data collected by NASA's MESSENGER probe, which ended in 2015. MESSENGER could only distinguish features larger than around 3 miles (5 kilometers) across.
In November 2026, the BepiColombo mission will start conducting scans of Mercury's surface in much higher resolution than this, and that could reveal even more shrinkage features.
In order to survive, the first humans to reach Mars will immediately need a safe and reliable place to set up shop. But building on Earth’s neighbor is immensely more challenging than construction projects at home. The Martian surface is a practically airless vacuum, constantly bombarded with radiation, and regularly reaches temperatures as low as -81 degrees Fahrenheit.
However, there is a very specific process on Earth that approximates similar conditions to the Red Planet: freeze-drying. According to researchers at The Hong Kong University of Science and Technology, the same method used to preserve perishable foods could also inspire sturdy and even recyclable 3D-printed houses on Mars. The secret ingredients? Everyday gelatin and yeast. The novel approach is detailed in a study published today in the journal Chem Circularity.
“My inspiration came from freeze-dried fruits that become harder. So I asked myself if we can take advantage of that and make some materials,” Jishen Qiu, a study co-author and civil engineer, said in a statement.
The combination of materials are simple: sand and an adhesive binder. Since gluing tiny rocks together requires specialized stickiness, Qiu’s team invented a new concoction from gelatin and lab engineered yeast. When mixed, the yeast microbes become coated with adhesive proteins similar to those used by mussels to anchor on stones underwater. The goop is then extruded through a 3D printer nozzle into an extremely cold, low-pressure environment, where it solidifies as the water instantly freezes and converts from ice to vapor. The final result is a light, porous, foam-like material that remains very resilient.
“This is actually strong enough to build a one- or two-story building on Earth—whose gravity is three times that of Mars,” explained Qiu. “So, you can probably easily build a multistory building on Mars with the material.”
Qiu and his collaborators know they must first start small before expanding to Martian neighborhoods. Their prototype domes are only about the size of a wine cork at this point, but their compressive strength is comparable to low-grade concrete.
Engineers have experimented with 3D-printed structures to use on the moon and Mars for years, but many of these still require steps like melting down rocks or lunar regolith. These methods usually require a lot of extra energy, which may limit their utility. Qiu’s technique requires comparatively little energy, although he admits it’s still unclear if yeasts can withstand life on Mars. That said, the team’s early results are a promising step towards simple, efficient, and sturdy buildings beyond Earth. If nothing else, yeast also lends itself to trial-and-error.
“As long as there’s one yeast that’s still alive, you can grow them again,” added Qiu.
This new satellite image shows Vasquez Rocks in southern California, where Captain Kirk once faced off against the Gorn. (Image credit: NASA Earth Observatory/Michala Garrison/CBS via Getty Images)
Decades ago, Captain Kirk faced off against the Gorn on the uncharted desert planet Metron. But as we can see in new satellite imagery from NASA, that mysterious rocky world can actually be found right here on Earth in California.
What is it?
In this new image captured by the Operational Land Imager (OLI) on NASA's Landsat 9 satellite, you can see the wide variety of rock and vegetation in the area around Vasquez Rocks Natural Area County Park in southern California.
The 25-million-year-old Vasquez Rocks is a magnificent natural area with an incredible range of unique, large rocks jutting out of the ground. In this false-color image, you can see the area in shortwave-infrared and near-infrared wavelengths that show the differences in vegetation across the landscape.
And this location hides some amazing history. Not only is Vasquez Rocks home to incredible rock formations and desert vegetation, it is also where Captain Kirk fought the Gorn in Star Trek the Original Series. It's not a surprise the series chose this location for its infamous fight scene (among many other Trek scenes), as the massive, sun-bleached boulders pointing to the sky and barren landscape give it a distinctly alien feel.
A satellite view of the are around Vasquez Rocks. (Image credit: NASA Earth Observatory/Michala Garrison)
Why is it incredible?
While the rocky landscape of Vasquez Rocks is firmly fixed here on Earth, it has consistently made history as the backdrop to a whole host of iconic science fiction moments.
Indeed, Star Trek is one as Vasquez Rocks has been used for filming in a whole host of Trek episodes. It was even Spock's home world of Vulcan in the films Star Trek IV: The Voyage Home and Star Trek (2009).
But beyond Star Trek, the site has been used for filming sci-fi classics like Galaxy Quest, Battlestar Galactica and Planet of the Apes in addition to a whole host of cowboy movies and more.
It turns out that right here on Earth, we can find perfectly good alien worlds.
With the new Health Sensing System, Apple Watch Series 12 features the most accurate heart rate sensing in a wearable.
Apple on Wednesday announced its most advanced health and fitness experience yet, expanding what Apple Watch and iPhone can do as intelligent, science-driven tools for users’ personal wellbeing. Apple Watch Series 12 and Apple Watch Ultra 4 introduce the new Health Sensing System, enabling the most accurate heart rate sensing in a wearable, as well as a new readiness experience to give users insight into their body’s capacity to take on their day. They pair with a redesigned Health app coming later this year to iPhone, which offers a holistic view of long-term health alongside new, easy-to-understand health and longevity insights powered by Apple Intelligence. Together, these updates will give users a more complete picture of their health and fitness while keeping their personal health data private, secure, and under their control.
Apple Watch and iPhone deliver powerful and intelligent health and fitness insights.
“At Apple, we believe technology can empower everyone with actionable, science-based insights built with privacy at the core. By combining breakthrough sensing on Apple Watch with Apple Intelligence in the Health app, we’re able to translate complex biometric data into clear guidance for users,” said Sumbul Desai, M.D., Apple’s vice president of Health and Fitness, in a statement. “This both helps people navigate their day-to-day routines with confidence and connects those moments with deeper context around their longevity, building a strong foundation for a healthier future.”
The New Health Sensing System on Apple Watch
The new Health Sensing System on Apple Watch Series 12 and Apple Watch Ultra 4 features new optical and electrical heart sensors, enabling higher-frequency heart rate and heart rate variability (HRV) measurements, a new readiness score, a more comprehensive Vitals overview with the addition of HRV, and an updated Heart Rate app.
Accuracy of health data is critical to providing meaningful insights. A scientifically rigorous study on a population of over 1,000 participants with representation across demographic groups compared the new heart rate sensing accuracy on Apple Watch against leading wearables, and resulted in Apple Watch showing the highest heart rate accuracy across devices.
With larger, power-efficient green LEDs on the optical heart sensor, Apple Watch Series 12 and Apple Watch Ultra 4 now measure heart rate every five seconds, all day long. This continuous, passive measurement delivers deeper insight into a user’s fitness and physiological state while making Exercise and Move Activity rings even more accurate. Users can view their real-time heart rate at a glance throughout their day — whether they’re recovering from a workout or dashing for the train — using the updated Heart Rate app and new watch face complications.
HRV, a key indicator of stress and recovery, is now measured as often as every five minutes — 24x more frequently — and available to view in a new section of the Heart Rate app. Apple Watch provides two separate variants of HRV for better understanding of a user’s health status. Recovery HRV is best to identify daily signals of stress and recovery, while overall HRV is best for insights on a user’s broader health, including cardiovascular health. Higher variability is generally associated with better overall recovery.
Overnight vitals now includes Recovery HRV analyzed against a user’s personal baseline, providing a more complete view of their health status. A new daytime vitals view lets users toggle between overnight and daytime metrics, and can potentially spot shifts in their metrics before they show up overnight.
Overnight vitals now includes recovery HRV measurements analyzed against a user’s personal baseline, providing a more complete view of their health status. The Vitals app includes a new daytime view and integrates high-frequency HRV for a more complete look at a user’s health status, night or day.
Readiness: A Daily Read on the Body’s Capacity
Apple Watch Series 12 and Apple Watch Ultra 4 introduce readiness — a new feature that analyzes a user’s recent activity, vitals, and sleep score, and then provides a single 0-10 score each day with a clear, actionable recommendation: Recover, Pace Yourself, Ready, or Go For It. This helps a user decide how to take on their workday or tackle their training plan.
The new readiness feature analyzes activity, vitals, and sleep score to deliver a daily 0-10 score along with actionable recommendations to optimize a user’s day.
Readiness updates throughout the day as new data comes in, reflecting, for example, an intense workout or a shift in daytime vitals. Readiness clearly highlights which factors are driving the score and allows users to tap into more details. The scoring algorithm was developed using data from the Apple Heart and Movement Study, in collaboration with exercise scientists and physicians at Apple.
Readiness clearly highlights which factors are driving the score and allows users to tap into more details.
A Redesigned Health App with Apple Intelligence at Its Core
The Health app on iPhone is a central and secure location for a user’s health and fitness information, and can uniquely provide a better understanding of their overall health. Apple Intelligence brings powerful AI capabilities into the apps and experiences users rely on every day, making them more personal and helpful than ever, and with iOS 27 and iPadOS 27, Apple Intelligence extends to the Health app. Redesigned to dynamically adapt to a user’s personal health and fitness metrics, the Health app now offers iPhone and iPad users a view of their long-term health alongside easy-to-understand insights, providing personalized guidance that can help them live a better day and healthier life. The redesigned Health app has been built to securely and privately protect a user’s data at every step.
Insights Tab
The new Insights tab surfaces timely health information with a summary that updates throughout the day across heart, sleep, readiness, fitness, vitals, and cycle tracking data. A new For You section delivers personalized recommendations and relevant articles based on a user’s data — like a suggestion to improve a wind-down routine after a stretch of late nights.
The Health app has been redesigned to dynamically adapt to a user’s personal health and fitness metrics, offering a holistic view of their long-term health alongside easy-to-understand daily insights.
Longevity Tab
A new Longevity tab analyzes a user’s longitudinal health data for deeper insights into heart health, sleep, mental wellbeing, movement health, metabolic health, hearing, and nutrition. The tab includes Health Age, a new feature that uses Apple Watch data to show users how their metrics are tracking relative to their chronological age, informed by the best available science. The algorithm can factor in metrics from Apple Watch like VO2 max, resting heart rate, sleep, and HRV, and users can also add lab data, including A1c and LDL, to enrich the analysis.
Within the Longevity tab, users can see what’s shaping their long-term health based on data from iPhone, Apple Watch, AirPods, and clinical health records, as well as third-party apps and devices. An informative visualization fills in each category, helping users understand their status in different areas of health. Users can further build out their health picture through new evaluations, at-home movement assessments, and the ability to add lab tests.
Movement Evaluations
Mobility is a critical marker of overall function and a strong predictor of independence, chronic disease risk, and quality of life. Yet routine assessment remains largely absent from proactive health management, typically requiring a visit to an exercise physiologist or physical therapist. Now, users can take in-depth physical assessments — measuring flexibility, strength, balance, movement mechanics, and VO2 max — right at home using their iPhone camera and Apple Watch. This experience runs entirely on device; no video is ever recorded, stored, or shared. Using vision-based AI models, these assessments provide real-time audio and visual feedback, and were developed using clinician input.
Labs
Lab results from routine testing can provide important insights into a user’s overall wellbeing. Health app users can already import existing labs and see their results and trends over time. Users will be able to schedule and purchase new labs that feature over 50 key biomarkers for $119 directly through the Health app at approximately 2,000 Quest Diagnostics locations in the U.S.
Tailored Health Content
Users will be able to see videos and articles across each area of health that overlays their data with insights from Apple Health clinical experts explaining why it’s important. For example, after a user receives their annual lab results, the Health app will present a video from an expert explaining their LDL levels, what the data means, and how they can take steps to improve, if needed. Or if a user learns from their movement assessment that they need to work on their balance, the Health app will present a video from an expert explaining what they can do. They will also receive an exercise plan to help them improve their balance, with moves selected for their ability and needs.
The redesigned Health app will be available later this year, starting in U.S. English, with more languages to follow.
Perimenopause and Menopause Support Arrive on Cycle Tracking
A person’s menstrual cycle is an essential indicator of overall health, and the Cycle Tracking experience is designed to support individuals across life stages, from logging their first period to receiving a retrospective ovulation estimate, and now, to supporting perimenopause and menopause. Cycle Tracking adapts as users’ health priorities change, whether that’s rooted in curiosity, daily planning, family building, or long-term wellbeing.
With iOS 27, the Health app adds support for perimenopause and menopause, as well as notifications about cycle deviations inclusive of perimenopause, to Cycle Tracking. Users will be able to log if they are in perimenopause or menopause for further customization of their Cycle Tracking experience, track their symptoms, and monitor cycles over time. Additionally, if a user logs bleeding after menopause, they will receive a notification to speak with their doctor. New educational articles are available in the Health app to help users better understand this new chapter, in addition to tips informed by clinical experts.
Additionally, many people don’t recognize they’re in perimenopause because the symptoms can start years before their last period. Now, users age 40 and over can receive a notification if a deviation in their logged cycle patterns is suggestive of perimenopause, so they can speak to their doctor about it at their next appointment.
More Ways to Stay Healthy
With iOS 27, iPadOS 27, macOS 27, and watchOS 27, Apple introduces additional ways to stay healthy:
• Workout Buddy works on Apple Watch even when users don’t have their iPhone nearby. The feature also now incorporates even more fitness data when delivering motivational insights, and is available in both English and Spanish.5
• Expanded GymKit functionality enables users with AirPods Pro 3 to sync their heart rate data through iPhone with compatible gym equipment, including treadmills and indoor bikes.
• More accurate treadmill readings, powered by new machine learning models, improve distance calculations from the very first step of a walk or run.
Availability
• watchOS 27 will be available for Apple Watch Series 9 or later, Apple Watch SE 3, and Apple Watch Ultra 2 or later beginning Monday, September 14, and requires iPhone 11 or later or iPhone SE 3 with iOS 27. Not all features are available on all devices or in all regions. For more information about availability, visit apple.com.
• The redesigned Health app will be available on Apple Intelligence-enabled iPhone and iPad models with the latest software, with select features available only on iPhone. Some features may not be available in all regions or languages. Health Age requires Apple Watch. The test to estimate VO2 max requires Apple Watch, AirPods Pro 3, or a third-party heart rate sensing device. Some features require users to be 18 or older. For information on Apple Intelligence availability, visit support.apple.com/en-us/121115.
• Features are subject to change. Some features may not be available in all languages or regions, and availability may vary due to local laws and regulations. For more information about availability, visit apple.com.
MacDailyNews Take: Very nice health and fitness additions to a strong Apple Watch lineup this year!
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Além de servir como uma rede social com conteúdos para passar o tempo, o TikTok também possui um grande número de criadores de conteúdo focados em publicações de cunho educacional.
Para incentivar e expandir o acesso a esses posts, a rede social permite ativar o chamado Feed STEM (Science, Technology, Engineering and Mathematics, ou Ciência, Tecnologia, Engenharia e Matemática).
Apesar de já vir ativado para usuários entre 13 e 17 anos, todos podem ativar o filtro STEM manualmente. Veja como! 😄
Look up at the night sky and it is easy to imagine a few bright worlds hanging in an empty blackness. But what are we really looking at when we say “the Solar System”? It is a family shaped by one star’s gravity, built from the same ancient disk of gas and dust, and still […]
Apple’s new Apple Watch Series 12 and Ultra 4 pair redesigned health sensors with the S11 chip for denser heart-rate data, Readiness scores, and Audio Intelligence, while Ultra 4 gains substantially longer battery life and Series 12 brings back ceramic cases.
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