Apple

Apple Announces New, Faster iPad Mini Built For Apple Intelligence (theverge.com) 23

In a press release this morning, Apple announced a new iPad Mini with a faster A17 Pro chip that supports Apple Intelligence. The Verge reports: The new Mini is mostly a spec bump: it runs a new A17 Pro chip, which Apple says has a 30 percent faster CPU, 25 percent faster GPU, and a Neural Engine twice as fast as the previous model. The device also supports the new Apple Pencil Pro, which is a nice touch for the Mini-toting artists out there, and comes with 128GB of storage in the base model rather than 64GB. (Those AI models need all the space they can get.) The Wi-Fi 6E chip is faster, the USB-C port is faster, everything about the iPad Mini is the same as before only faster this time.

The only real design change with the new Mini is the colors. Apple's gone more colorful with a lot of its products this year, and the Mini comes in new purple and blue models. In photos they look muted rather than vivid, though, so don't expect the eye-popping new colors on the iPhone 16.

Medicine

Human Sense of Smell Is Faster Than Previously Thought, New Study Suggests 26

A new study reveals that the human sense of smell is far more sensitive than previously thought, capable of distinguishing odors and their sequences within just 60 milliseconds. CNN reports: In a single sniff, the human sense of smell can distinguish odors within a fraction of a second, working at a level of sensitivity that is "on par" with how our brains perceive color, "refuting the widely held belief that olfaction is our slow sense," a new study finds. Humans also can discern between various sequences of odors -- distinguishing a sequence of "A" before "B" from sequence "B" before "A" -- when the interval between odorant A and odorant B is merely 60 milliseconds, according to the study, published Monday in the journal Nature Human Behavior. [...]

The new findings challenge previous research in which the timing it took to discriminate between odor sequences was around 1,200 milliseconds, Dr. Dmitry Rinberg, a professor in the Department of Neuroscience and Physiology at NYU Langone Health in New York, wrote in an editorial accompanying the study in Nature Human Behavior. "The timing of individual notes in music is essential for conveying meaning and beauty in a melody, and the human ear is very sensitive to this. However, temporal sensitivity is not limited to hearing: our sense of smell can also perceive small temporal changes in odor presentations," he wrote. "Similar to how timing affects the perception of notes in a melody, the timing of individual components in a complex odor mixture that reaches the nose may be crucial for our perception of the olfactory world."

The ability to tell apart odors within a single sniff might be an important way in which animals detect both what a smell is and where it might be in space, said Dr. Sandeep Robert Datta, a professor in the Department of Neurobiology at Harvard Medical School, who was not involved in the new study. "The demonstration that humans can tell apart smells as they change within a sniff is a powerful demonstration that timing is important for smell across species, and therefore is a general principle underlying olfactory function. In addition, this study sheds important light on the mysterious mechanisms that support human odor perception," Datta wrote in an email. "The study of human olfaction has historically lagged that of vision and hearing, because as humans we think of ourselves as visual creatures that largely use speech to communicate," he said, adding that the new study helps "fill a critical gap in our understanding of how we as humans smell."
Space

NASA Launches Europa Clipper To Probe Jupiter's Icy Moon for Signs of Life 70

NASA's Europa Clipper mission lifted off successfully on Monday, marking the agency's first mission to Jupiter in over a decade. The $5.2 billion spacecraft aims to investigate whether Europa, Jupiter's fourth-largest moon, could harbor conditions suitable for life. A SpaceX Falcon Heavy rocket launched from NASA's Kennedy Space Center in Florida at 12:06 p.m. Eastern time, lifting the Europa Clipper spacecraft into orbit around Earth.

Europa Clipper, NASA's largest-ever interplanetary craft, weighs 12,500 pounds and boasts solar panels spanning 100 feet. Its nine scientific instruments will study Europa's surface and interior in unprecedented detail. After a 1.8 billion-mile journey, the spacecraft will reach Jupiter in April 2030. It will then conduct 49 flybys of Europa over four years, coming within 16 miles of the moon's surface.

Scientists believe Europa's subsurface ocean could contain twice as much water as Earth's oceans. The mission will measure ocean depth, analyze surface compounds, and map Europa's magnetic field to gather clues about its internal composition. Instruments will search for warm spots indicating thin ice, potential cryovolcanoes, and plumes of water vapor. The spacecraft will also attempt to identify carbon-based molecules that could serve as building blocks for life. "Europa is certainly the most likely place for life beyond Earth in our solar system," Robert Pappalardo, Europa Clipper project scientist, told the New York Times.
Space

SpaceX's Starship Completes Fifth Test Flight - and Lands Booster Back at Launch Tower (cnbc.com) 203

Early this morning SpaceX successfully launched its Starship rocket on its fifth test flight. But more importantly, CNBC points out, SpaceX "made a dramatic first catch of the rocket's more than 20-story tall booster."

Watch the footage here. It's pretty exciting... The achievement marks a major milestone toward SpaceX's goal of making Starship a fully reusable rocket system... The rocket's "Super Heavy" booster returned to land on the arms of the company's launch tower nearly seven minutes after launch.

"Are you kidding me?" SpaceX communications manager Dan Huot said on the company's webcast. "What we just saw, that looked like magic," Huot added...

Starship separated and continued on to space, traveling halfway around the Earth before reentering the atmosphere and splashing down in the Indian Ocean as intended to complete the test. There were no people on board the fifth Starship flight. The company's leadership has said SpaceX expects to fly hundreds of Starship missions before the rocket launches with any crew...

With the booster catch, SpaceX has surpassed the fourth test flight's milestones... The company sees the ambitious catch approach as critical to its goal of making the rocket fully reusable. "SpaceX engineers have spent years preparing and months testing for the booster catch attempt, with technicians pouring tens of thousands of hours into building the infrastructure to maximize our chances for success," the company wrote on its website.

Moon

NASA Confirms Plans To Develop Lunar Time Standard (nasa.gov) 29

NASA confirmed that it's working with international partners and standards organizations to create a Coordinated Lunar Time (LTC) for future lunar exploration. This time standard will account for relativity and be scalable for other celestial bodies, supporting long-term missions like Artemis and commercial space activities. From the report: The lunar time will be determined by a weighted average of atomic clocks at the Moon, similar to how scientists calculate Earth's globally recognized Coordinated Universal Time (UTC). Exactly where at the Moon is still to be determined, since current analysis indicates that atomic clocks placed at the Moon's surface will appear to 'tick' faster by microseconds per day. A microsecond is one millionth of a second. NASA and its partners are currently researching which mathematical models will be best for establishing a lunar time.

To put these numbers into perspective, a hummingbird's wings flap about 50 times per second. Each flap is about .02 seconds, or 20,000 microseconds. So, while 56 microseconds may seem miniscule, when discussing distances in space, tiny bits of time add up.
"For something traveling at the speed of light, 56 microseconds is enough time to travel the distance of approximately 168 football fields," said Cheryl Gramling, lead on lunar position, navigation, timing, and standards at NASA Headquarters in Washington. "If someone is orbiting the Moon, an observer on Earth who isn't compensating for the effects of relativity over a day would think that the orbiting astronaut is approximately 168 football fields away from where the astronaut really is."
The Military

US Military Spaceplane To Perform Orbital Maneuvers (spacenews.com) 18

In a rare disclosure, the U.S. Space Force announced that its secretive X-37B spaceplane will execute a series of maneuvers before returning back to Earth. SpaceNews reports: The reusable spacecraft, which has been in orbit since December 28, 2023, will perform aerobraking maneuvers to alter its trajectory around Earth, the Space Force said Oct. 10. This technique involves making multiple passes through the planet's upper atmosphere, using atmospheric drag to modify the vehicle's orbit while conserving fuel. These maneuvers also are intended to showcase responsible space operations, the Space Force said. The aerobraking enables the spaceplane to change orbits and comply with space debris mitigation rules by safely discarding the service module.

The X-37B, manufactured by Boeing, is jointly operated by the U.S. Space Force and the Air Force Rapid Capabilities Office. Since its launch aboard a SpaceX Falcon Heavy rocket from NASA's Kennedy Space Center in Florida, the spaceplane has been conducting radiation effect experiments and testing space domain awareness technologies in a highly elliptical orbit. [...] After completing its aerobraking maneuvers, the X-37B will resume its testing and experimentation objectives. Once these are accomplished, the vehicle will de-orbit and return to Earth, utilizing its autonomous landing system to touch down horizontally like a conventional aircraft. The Space Force has not disclosed the expected duration of the current mission.

Space

Jupiter's Great Red Spot Is Shapeshifting in Ways 'Never Identified Before' 25

An anonymous reader writes: A massive storm has been raging on Jupiter for centuries, and, for the most part, has appeared very serious. A new series of detailed images, however, revealed that the famous red cyclone can get a little squiggly, bulging into different shapes and sizes over a short period of time.

Astronomers used the Hubble space telescope to look at Jupiter's Great Red Spot (GRS) from December 2023 to March 2024, and they observed the massive storm changing dimensions over the 90-day period. The reason behind this unexpected shapeshifting is unknown, but it revealed that the famous red storm is not as stable as it seemed. The results of the Hubble observations are detailed in a study published Wednesday in The Planetary Science Journal.

Using Hubble's observations, the team of astronomers behind the new study measured the Great Red Spot's size, shape, brightness, color, and vorticity over one full oscillation cycle. The combined images act like a time-lapse of the storm's changing behavior, revealing its famous red eye varying in size, while its core gets brighter when the Great Red Spot is at its largest during the 90-day cycle.
Operating Systems

OpenBSD 7.6 Released (phoronix.com) 22

Phoronix's Michael Larabel reports: OpenBSD 7.6 is out this evening as another major step forward for this BSD operating system with enhanced hardware support, security improvements, updating various user-space software, and enabling other kernel enhancements. There are a ton of changes to find with the just-released OpenBSD 7.6.

Some of the new OpenBSD 7.6 features include:

- OpenBSD 7.6 provides initial support for Qualcomm Snapdragon X1 Elite (X1E80100) SoCs. The 7.6 release also has initial Samsung Galaxy Book4 Edge boot support in ACPI mode with OpenBSD 7.6.
- ARM64 has additional CPU security mitigations with Spectre-V4 now in place on ARM64 and adding Spectre-BHB for Cortex-A57 cores.
- OpenBSD 7.6 on RISC-V now supports the Milk-V Pioneer board.
- OpenBSD 7.6 on AMD64 has finally implemented support for AVX-512.
- Various SMP kernel improvements.
You can view the full list of features and download the OpenBSD 7.6 release via OpenBSD.org.
Iphone

Apple Potentially Facing Worst Leak Since iPhone 4 Was Left In a Bar (macrumors.com) 79

"Alleged photos and videos of an unannounced 14-inch MacBook Pro with an M4 chip continue to surface on social media, in what could be the worst product leak for Apple since an employee accidentally left an iPhone 4 prototype at a bar in California in 2010," writes MacRumors' Joe Rossignol. From the report: The latest video of what could be a next-generation MacBook Pro was shared on YouTube Shorts today by Russian channel Romancev768, just one day after another Russian channel shared a similar video. The clip shows a box for a 14-inch MacBook Pro that is apparently configured with an M4 chip with a 10-core CPU and a 10-core GPU, 16GB of RAM, 512GB of storage, three Thunderbolt 4 ports, and a Space Black finish. According to the "About This Mac" software menu shown in the video, the MacBook Pro in the video is allegedly an unreleased November 2024 model. [...]

Apple is well known for having a culture of secrecy, so this magnitude of leak is rarely seen for its products. As previously mentioned, this could be the most significant leak for Apple since Gizmodo obtained and shared photos of an iPhone 4 prototype that a then-employee of the company accidentally left behind at a bar in California. In that case, Apple got law enforcement involved, but how it acts this time around remains to be seen.

Technology

Where Have All the Chief Metaverse Officers Gone? (wired.com) 34

Wired: Last spring, At an event in New York City, Robert Triefus, then Gucci's CEO of Vault -- the brand's virtual marketplace -- argued the recent deflation in hype around the metaverse was just a brief hiccup. "I see it more as a correction," he told the crowd. "We're now at a much more sensible place, where you've got individuals [and] companies ... who are very serious about what they're doing." When asked how buying real estate in The Sandbox aligned with Gucci's broader goals as a brand, he responded with quasi-mystical language: "The metaverse is an opportunity to embrace the digital self."

The following month, Triefus left Gucci "abruptly," according to Vogue Business. He was off "to pursue other opportunities," the brand said at the time. A month later, Vogue Business revealed that Triefus was to be the new Stone Island CEO. Immediately there was speculation on whether Stone Island would enter the metaverse. So far it has not. Triefus' public zeal for all things virtual and his short-lived tenure as the head of Gucci's metaverse strategy are both part of a broader trend that briefly convulsed the private sector starting in late 2021: the hastily recruited "chief metaverse officer."

Following a wave of excitement around the metaverse as a golden new opportunity for commerce, a legion of brands rushed to launch their own virtual storefronts. Three quarters of CEOs surveyed by Russell Reynolds in 2022 said they were hiring dedicated talent to lead in the space, or expanding current roles to cover it. While the actual titles varied, their main role seemed to involve helping their respective brands devise new strategies with then-buzzy technologies such as NFTs and crypto.
Meta CEO Mark Zuckerberg has quietly shifted focus from virtual reality to augmented reality, signaling a retreat from the company's ambitious metaverse plans. At Meta's recent developer conference, Zuckerberg mentioned "metaverse" only three times in his hour-long keynote, instead highlighting AR innovations like smart glasses.

The move follows a broader cooling of corporate enthusiasm for the metaverse. Luxury brands that once rushed to establish virtual presences have scaled back efforts, with some chief metaverse officers pivoting to AI-focused roles. "Many brands were quick to experiment -- there was a sense of a land grab," said Matthew Ball, tech investor and author. "They didn't want to be last, and they were excited to try and be first." Wired notes that the shift reflects disappointing user engagement with existing metaverse platforms and growing interest in more accessible AR technologies.
Space

Spacecraft Launches Toward Asteroid Knocked Off Course By NASA (bbc.com) 28

The Hera spacecraft, launched by the European Space Agency on Monday, is on a mission to study the aftermath of NASA's 2022 test that successfully knocked the Dimorphos asteroid off course by intentionally crashing a probe into it. It's scheduled to arrive in December 2026. The BBC reports: The Hera craft launched from Cape Canaveral in Florida at 10:52 local time (15:52BST) on Monday. [...] The Hera mission, which is run by the European Space Agency, is a follow-on from Nasa's Double Asteroid Redirection Test (DART) project. Dimorphos is a small moon 160m-wide that orbits an asteroid close to Earth called Didymos in something called a binary asteroid system. In 2022 Nasa said it successfully changed Dimorphos's course by crashing a probe into it. It altered the rock's path by a few meters, according to Nasa's scientists. The asteroid was not on course to hit Earth, but it was a test to see whether space agencies could do it when there is genuine risk. When it arrives in two years, the Hera craft will look at the size and depth of the impact crater created on Dimorphos. Two cube-shaped probes will also study the make-up of the asteroid and its mass.
Communications

FCC Lets Starlink Provide Service To Cellphones In Area Hit By Hurricane (arstechnica.com) 152

An anonymous reader quotes a report from Ars Technica: The Federal Communications Commission gave Starlink and T-Mobile emergency authority to provide satellite-to-phone coverage in areas hit by Hurricane Helene. "SpaceX and T-Mobile have been given emergency special temporary authority by the FCC to enable Starlink satellites with direct-to-cell capability to provide coverage for cell phones in the affected areas of Hurricane Helene," SpaceX said yesterday. "The satellites have already been enabled and started broadcasting emergency alerts to cell phones on all networks in North Carolina. In addition, we may test basic texting (SMS) capabilities for most cell phones on the T-Mobile network in North Carolina."

SpaceX warned of limits since the service isn't ready for a commercial rollout. "SpaceX's direct-to-cell constellation has not been fully deployed, so all services will be delivered on a best-effort basis," the company said. Starlink is being used to provide wireless emergency alerts to cell phones from all carriers in North Carolina, according to Ben Longmier, senior director of satellite engineering for SpaceX. "We are also closely monitoring Hurricane Milton and standing by ready to take action in Florida," he wrote.

The FCC said (PDF) the approval "enabl[es] SpaceX to operate Supplemental Coverage from Space (SCS) in the 1910-1915 MHz and 1990-1995 MHz frequency bands leased from T-Mobile in areas affected by the Hurricane Helene." An FCC spokesperson told Ars that the approval is for all areas affected by Hurricane Helene, although it's only active in North Carolina so far. The FCC also said (PDF) that it is granting "special temporary authorities to licensees and issuing rule waivers to help communications providers maintain and restore service, support emergency operations, and assist public safety, including search and rescue efforts." Separately, the FCC last week waived (PDF) certain Lifeline program eligibility rules to help people in disaster areas (PDF) apply for discounted phone and broadband service.

Space

New JWST Data Explores 'Hubble Constant' Tension for Universe's Expansion Rate (space.com) 59

"Scientists can't agree on the exact rate of expansion of the universe, dictated by the Hubble constant," a new article at Space.com reminds us: The rate can be measured starting from the local (and therefore recent) universe, then going farther back in time — or, it can be calculated starting from the distant (and therefore early) universe, then working your way up. The issue is both methods deliver values that don't agree with each other. This is where the James Web Space Telescope (JWST) comes in. Gravitationally lensed supernovas in the early cosmos the JWST is observing could provide a third way of measuring the rate, potentially helping resolve this "Hubble trouble." "The supernova was named 'supernova Hope' since it gives astronomers hope to better understand the universe's changing expansion rate," Brenda Frye, study team leader and a University of Arizona researcher, said in a NASA statement.

This investigation of supernova Hope began when Frye and her global team of scientists found three curious points of light in a JWST image of a distant, densely packed cluster of galaxies. Those points of light in the image were not visible when the Hubble Space Telescope imaged the same cluster, known as PLCK G165.7+67.0 or, more simply, G165, back in 2015. "It all started with one question by the team: 'What are those three dots that weren't there before? Could that be a supernova?'" Frye said.

The team noted a "high rate of star formation... more than 300 solar masses per year," according to NASA's statement: Dr. Frye: "Initial analyses confirmed that these dots corresponded to an exploding star, one with rare qualities. First, it's a Type Ia supernova, an explosion of a white dwarf star. This type of supernova is generally called a 'standard candle,' meaning that the supernova had a known intrinsic brightness. Second, it is gravitationally lensed. Gravitational lensing is important to this experiment. The lens, consisting of a cluster of galaxies that is situated between the supernova and us, bends the supernova's light into multiple images...

To achieve three images, the light traveled along three different paths. Since each path had a different length, and light traveled at the same speed, the supernova was imaged in this Webb observation at three different times during its explosion... Trifold supernova images are special: The time delays, supernova distance, and gravitational lensing properties yield a value for the Hubble constant... The team reports the value for the Hubble constant as 75.4 kilometers per second per megaparsec, plus 8.1 or minus 5.5... This is only the second measurement of the Hubble constant by this method, and the first time using a standard candle.

Their result? "The Hubble constant value matches other measurements in the local universe, and is somewhat in tension with values obtained when the universe was young."
Data Storage

60TB Hard Drives Arriving in 2028, According To Industry Roadmap (tomshardware.com) 43

An anonymous reader shares a report: The arrival of energy-assisted magnetic recording (EAMR) technologies like Seagate's HAMR will play a crucial role in accelerating HDD capacity growth in the coming years. According to the new IEEE International Roadmap for Devices and Systems Mass Data Storage, we will see 60 TB hard disk drives in 2028. If the prediction is accurate, we will see HDD storage capacity doubling in just four years, something that did not happen for a while. Also, IEEE believes that HDD unit sales will increase.

IEEE's latest HDD development roadmap spans 2022 to 2037 and covers 15 years of hard drive evolution. The arrival of HAMR in 2024 will play a pivotal role in the increase in HDD capacity (even though Western Digital has managed to stay competitive with Seagate's HAMR HDDs using a set of its technologies) over the next few years. IEEE engineers expect HDDs to leapfrog to 40TB in 2025 and 60TB in 2028, doubling capacity from 30TB in 2024. By 2037, there will be 100TB of storage space, according to IEEE.

To get to those extreme capacities, HDD makers will have to increase the areal density of their platters steadily. To get to 40TB per drive, they will have to get to 2 TB/inch^2 in 2025 and then to over 4 TB/inch^2 in 2028 to build 60TB HDDs. By 2037, areal density will grow to over 10 Tb/inch^2. Increasing areal density will necessitate the use of new media, magnetic films, and all-new write and read heads.

Network

Cisco Is Abandoning the LoRaWAN Space With No Lifeboat For IoT Customers 37

Cisco is exiting the LoRaWAN market for IoT device connectivity, with no migration plans for customers. "LoRaWAN is a low power, wide area network specification, specifically designed to connect devices such as sensors over relatively long distances," notes The Register. "It is built on LoRa, a form of wireless communication that uses spread spectrum modulation, and makes use of license-free sub-gigahertz industrial, scientific, and medical (ISM) radio bands. The tech is overseen by the LoRa Alliance." From the report: Switchzilla made this information public in a notice on its website announcing the end-of-sale and end-of-life dates for Cisco LoRaWAN. The last day customers will be able to order any affected products will be January 1, 2025, with all support ceasing by the end of the decade. The list includes Cisco's 800 MHz and 900 MHz LoRaWAN Gateways, plus associated products such as omni-directional antennas and software for the Gateways and Interface Modules. If anyone was in any doubt, the notification spells it out: "Cisco will be exiting the LoRaWAN space. There is no planned migration for Cisco LoRaWAN gateways."
Businesses

Verizon Leases Over 6,300 Wireless Towers To Vertical Bridge For $3.3 Billion (capacitymedia.com) 26

Vertical Bridge has acquired the rights to lease and operate over 6,000 wireless towers from Verizon for $3.3 billion as part of a 10-year agreement, with potential extensions of up to 50 years. Capacity Media reports: "Upon the completion of this transaction, these assets, together with our existing portfolio which includes thousands of young, purpose-built towers, enhance Vertical Bridge's position as a fast, friendly, and flexible colocation partner to the wireless industry," said Ron Bizick, President and CEO of Vertical Bridge. Terms of the deal provide Verizon access to additional space on the towers for future use.

The US carrier said its latest deal with Vertical Bridge supports existing efforts to drive tower-related costs. "As the nation's largest mobility provider, we are well positioned with greater financial flexibility to invest in our business, return value to our shareholders and make the nation's best network even better for customers," said Hans Vestberg, chair and CEO of Verizon. The transaction is expected to close by the end of 2024, subject to closing conditions.
Earlier this month, Verizon announced a deal to acquire Frontier Communications for $9.6 billion.
Mars

Mars' Long-Lost Atmosphere Might Be Hiding in Plain Sight (newsweek.com) 15

Newsweek writes that the missing atmosphere of Mars "may be locked up in the planet's clay-rich surface, a new study by MIT geologists has suggested." According to the researchers, ancient water trickling through Mars' rocks could have triggered a series of chemical reactions, converting CO2 into methane and trapping the carbon in clay minerals for billions of years...

The dominant explanation relies on an interaction between the sun's rays and gases in the atmosphere. Mars lost its protective magnetic field billions of years ago, likely allowing high-energy solar particles to strike the upper atmosphere, kicking molecules off into space, according to NASA... But this might not be the whole story. The researchers focused on a type of clay mineral called smectite, known for its ability to trap carbon. These minerals, abundant on Mars, contain tiny folds that can store carbon molecules for aeons. The study was published in the journal Science Advances.

"There is plenty of evidence for a thick clay layer on the Martian surface. Almost 80 percent of satellite spectra detect these high-surface-area clay minerals on the Martian surface. Clay has been detected in craters as deep as 17 kilometers [10.5 miles]," [lead author Joshua] Murray said... Their model suggested that Mars' surface could contain up to 1.7 bar of CO2 — roughly 80 percent of its early atmospheric volume — sequestered as methane within clay deposits. This methane could still be present today, lying beneath the planet's dry and barren crust. "We know this process happens, and it is well-documented on Earth. And these rocks and clays exist on Mars," Oliver Jagoutz, the study's author, said in a statement. "So, we wanted to try and connect the dots."

The discovery that Mars' ancient atmosphere could be hidden within its surface clays offers a new perspective on the planet's history and raises intriguing possibilities for future exploration. For example, if the sequestered carbon could be recovered and converted, it could serve as a propellant for future space missions between Earth, Mars and beyond.

"In some ways, Mars' missing atmosphere could be hiding in plain sight," says the study's lead author — and the article adds that this raises some interesting possibilities.

"For example, if the sequestered carbon could be recovered and converted, it could serve as a propellant for future space missions between Earth, Mars and beyond..."
Space

Could Atom-Sized Black Holes Be Detected in Our Solar System? (scientificamerican.com) 59

Scientific American has surprising news about the possibility of black holes the size of an atom but containing the mass of an asteroid — the so-called "primordial black holes" formed after the birth of the universe which could solve the ongoing mystery of the missing dark matter.

These atom-sized black holes "may fly through the inner solar system about once a decade, scientists say... And if they sneak by the moon or Mars, scientists should be able to detect them, a new study shows." If one of these black holes comes near a planet or large moon, it should push the body off course enough to be measurable by current instruments. "As it passes by, the planet starts to wobble," says Sarah R. Geller, a theoretical physicist now at the University of California, Santa Cruz, and co-author of the study, which was published on September 17 in Physical Review D. "The wobble will grow over a few years but eventually it will damp out and go back to zero."

Study team member Tung X. Tran, then an undergraduate student at the Massachusetts Institute of Technology, built a computer model of the solar system to see how the distance between Earth and nearby solar system objects would change after a black hole flyby. He found that such an effect would be most noticeable for Mars, whose distance scientists know within about 10 centimeters. For a black hole in the middle of the mass range, "we found that after three years the signal would grow to between one to three meters," Tran says. "That's way above the threshold of precision that we can measure." The Earth-Mars distance is particularly well tracked because scientists have been sending generations of probes and landers to the Red Planet...

In a coincidence, an independent team published a paper about its search for signs of primordial black holes flying near Earth in the same issue of Physical Review D. The researchers' simulations found that such signals could be detectable in orbital data from Global Navigation Satellite Systems, as well as gravimeters that measure variations in Earth's gravitational field.

"For decades physicists thought dark matter was likely to take the form of so-called weakly interacting massive particles (WIMPs)," the article points out. "Yet generations of ever more sensitive experiments meant to find these particles have come up empty."

California astrophysicist Kevork Abazajian tells the site that now in the scientific community, "Primordial black holes are really gaining popularity."
Power

The Hot New Trend in Commercial Real Estate? Renting to Data Centers (yahoo.com) 49

U.S. real estate developers "are having a hard time keeping up with demand," reports the Los Angeles Times, "as businesses in search of secure spots for their servers rent nearly every square foot that becomes available..." Construction of new data centers is at "extraordinary levels" driven by "insatiable demand," a recent report on the industry by real estate brokerage JLL found. "Never in my career of 25 years in real estate have I seen demand like this on a global scale," said JLL real estate broker Darren Eades, who specializes in data centers...

The biggest drivers are AI and cloud service providers that include some of the biggest names in tech, such as Amazon, Microsoft, Google and Oracle. With occupancy in conventional office buildings still down sharply following the impact of the COVID-19 pandemic and property values falling, data centers represent a rare ripe opportunity for real estate developers, who are pursuing opportunities in major markets like Los Angeles and less urban locales that are served by plentiful and preferably cheap power needed to run data centers. "If you can find a cluster of power to build a site, they'll come," Eades said of developers. Construction is taking place at an "extraordinary" pace nationwide and still not keeping up, the JLL data center report said. [Data center] "Vacancy declined to a record low of 3% at midyear due to insatiable demand and despite rampant construction."

Development increased more than sevenfold in two years, with the pipeline of new projects leveling off in the first half of 2024, a potential signal that the U.S. power grid cannot support development at a faster pace. But when projects currently under construction or planned are complete, the U.S. colocation market, in which businesses rent space in a data center owned by another company for their servers and other computing hardware, will triple in size from current levels... Real estate investors and landlords are being drawn into the market because demand from tenants is high and they are likely to renew their leases after shouldering the costs of setting up data centers. "They invest in their space and in your space and they tend to stick around longer," said Mark Messana, president of Downtown Properties, which owns offices in Los Angeles and San Francisco. "As we all know, the office market is struggling a little bit, so it's nice to be able to have some data customers in the mix..."

Power demand for computing is growing so intense that it threatens to strain the nation's electrical grid, sending users to remote locations where power is plentiful and preferably cheap. Data center developers are working in Alabama, the Dakotas and Indiana, "traditionally states that wouldn't have data centers," Eades said.

The article includes "the mother of all data centers" in the western U.S. — a 30-story building where "thousands of miles of undersea fiber-optic cables disappear into an ordinary-looking office tower." Once a prestigious location for businesses, "The recent departure of a law firm that had been in the building more than 50 years cleared out five floors that will quickly be re-leased to data tenants, said Eades, who represents the landlord..."

To retrofit the building for data centers, "two elevators were removed so the empty shafts could hold water pipes used to help keep the temperature cool enough for the heat-producing servers" — and developers are happy rents "can be double what they are at newer downtown office high-rises, according to real estate data provider CoStar...

"By 2030, data centers could account for as much as 11% of U.S. power demand — up from 3% now, according to analysts at Goldman Sachs."
Space

SpaceX Pausing Launches to Study Falcon 9 Issue on Crew-9 Astronaut Mission (space.com) 30

"SpaceX has temporarily grounded its Falcon 9 rocket," reports Space.com, "after the vehicle experienced an issue on the Crew-9 astronaut launch for NASA." Crew-9 lifted off on Saturday (Sept. 28) from Florida's Cape Canaveral Space Force Station, sending NASA astronaut Nick Hague and Russian cosmonaut Aleksandr Gorbunov aloft aboard the Crew Dragon capsule "Freedom" [for a 5-month stay, returning in February with Starliner's two astronauts]. Everything appeared to go well. The Falcon 9's first stage aced its landing shortly after liftoff, and the rocket's upper stage deployed Freedom into its proper orbit; the capsule is on track to arrive at the International Space Station (ISS) on Sunday afternoon (Sept. 29) as planned. But the upper stage experienced an issue after completing that job, SpaceX announced early Sunday morning.

"After today's successful launch of Crew-9, Falcon 9's second stage was disposed in the ocean as planned, but experienced an off-nominal deorbit burn. As a result, the second stage safely landed in the ocean, but outside of the targeted area. We will resume launching after we better understand root cause," SpaceX wrote in a post on X.

Indeed, a Falcon 9 had been scheduled to launch 20 broadband satellites for the company Eutelsat OneWeb from Vandenberg Space Force Base in California on Sunday night, but that liftoff has been postponed.

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