Liquefied CO2 will be transported by ship to "the world's first carbon shipping port," reports the Washington Post — an island in the North Sea where it will be "buried in a layer of spongy rock a mile and a half beneath the seabed."

Norway's government is covering 80% of the $1 billion first phase, with another $714 million from three fossil fuel companies toward an ongoing expansion (with an additional $150 million E.U. subsidy). As Europe's top oil and gas producer, Norway is using its fossil fuel income to see if they can make "carbon dumping" work. The world's first carbon shipment arrived this summer, carrying 7,500 metric tons of liquefied CO2 from a Norwegian cement factory that otherwise would have gone into the atmosphere... If all goes as planned, the project's backers — Shell, Equinor and TotalEnergies, along with Norway — say their facility could pump 5 million metric tons of carbon dioxide underground each year, or about a tenth of Norway's annual emissions...

[At the Heidelberg Materials cement factory in Brevik, Norway], when hot CO2-laden air comes rushing out of the cement kilns, the plant uses seawater from the neighboring fjord to cool it down. The cool air goes into a chamber where it gets sprayed with amine, a chemical that latches onto CO2 at low temperatures. The amine mist settles to the bottom, dragging carbon dioxide down with it. The rest of the air floats out of the smokestack with about 85 percent less CO2 in it, according to project manager Anders Pettersen. Later, Heidelberg Materials uses waste heat from the kilns to break the chemical bonds, so that the amine releases the carbon dioxide. The pure CO2 then goes into a compressor that resembles a giant steel heart, where it gets denser and colder until it finally becomes liquid. That liquid CO2 remains in storage tanks until a ship comes to carry it away. At best, operators expect this system to capture half the plant's CO2 emissions: 400,000 metric tons per year, or the equivalent of about 93,000 cars on the road...

[T]hree other companies are lined up to follow: Ørsted, which will send CO2 from two bioenergy plants in Denmark; Yara, which will send carbon from a Dutch fertilizer factory; and Stockholm Exergi, which will capture carbon from a Swedish bioenergy plant that burns wood waste. All of these projects have gotten significant subsidies from national governments and the European Union — essentially de-risking the experiment for the companies. Experts say the costs and headaches of installing and running carbon-capture equipment may start to make more financial sense as European carbon rules get stricter and the cost of emitting a ton of carbon dioxide goes up. Still, they say, it's hard to imagine many companies deciding to invest in carbon capture without serious subsidies...

The first shipments are being transported by Northern Pioneer, the world's biggest carbon dioxide tanker ship, built specifically for this project. The 430-foot ship can hold 7,500 metric tons of CO2 in tanks below deck. Those tanks keep it in a liquid state by cooling it to minus-15 degrees Fahrenheit and squeezing it with the same pressure the outside of a submarine would feel 500 feet below the waves. While that may sound extreme, consider that the liquid natural gas the ship uses for fuel has to be stored at minus-260 degrees. "CO2 isn't difficult to make it into a liquid," said Sally Benson, professor of energy science and engineering at Stanford University. Northern Pioneer is designed to emit about a third less carbon dioxide than a regular ship — key for a project that aims to eliminate carbon emissions. The ship burns natural gas, which emits less CO2 than marine diesel produces (though gas extraction is associated with methane leaks). The vessel uses a rotor sail to capture wind power. And it blows a constant stream of air bubbles to reduce friction as the hull cuts through the water, allowing it to burn less fuel. For every 100 tons of CO2 that Northern Lights pumps underground, it expects to emit three tons of CO2 into the atmosphere, mainly by burning fuel for shipping.
Eventually the carbon flows into a pipeline "that plunges through the North Sea and into the rocky layers below it — an engineering feat that's a bit like drilling for oil in reverse..." according to the article.

"Over the centuries, it should chemically react with the rock, eventually being locked away in minerals."

"A Chinese mega-constellation of communications satellites is facing serious delays," reports the South China Morning Post, "that could jeopardise its ambitions to compete with SpaceX's Starlink for valuable orbital resources." Only 90 satellites have been launched into low Earth orbit for the Qianfan broadband network — also known as the Thousand Sails Constellation or G60 Starlink — well short of the project's goal of 648 by the end of this year... Shanghai Yuanxin Satellite Technology, the company leading the project, plans to deploy more than 15,000 satellites by 2030 to deliver direct-to-phone internet services worldwide. To stay on track, Yuanxin — which is backed by the Shanghai municipal government — would have to launch more than 30 satellites a month to achieve its milestones of 648 by the end of 2025 for regional coverage and 1,296 two years later for global connectivity.
The New York Times reports that "the other megaconstellation, Guowang, is even farther behind. Despite plans to launch about 13,000 satellites within the next decade, it has 34 in orbit." A constellation has to launch half of its satellites within five years of successfully applying for its frequencies, and complete the full deployment within seven years, according to rules set by the International Telecommunication Union, a United Nations agency that allocates frequencies. The Chinese megaconstellations are behind on these goals. Companies that fail to hit their targets could be required to reduce the size of their megaconstellations.
Meanwhile SpaceX "has about 8,000 Starlink satellites in orbit and is expanding its lead every month," the Times writes, citing data from the U.S. Space Force and the nonprofit space-data group CelesTrak. (The Times has even created an animation showing Starlink's 8,000 satellites in orbit.) Researchers for the People's Liberation Army predict that the network will become "deeply embedded in the U.S. military combat system." They envision a time when Starlink satellites connect U.S. military bases and serve as an early missile-warning and interception network....

One of the major reasons for China's delay is the lack of a reliable, reusable launcher. Chinese companies still launch satellites using single-use rockets. After the satellites are deployed, rocket parts tumble back to Earth or become space debris... Six years after [SpaceX's] Falcon 9 began launching Starlink satellites, Chinese firms still have no answer to it... The government has tested nearly 20 rocket launchers in the "Long March" series.

At this weekend's Comic-Con, "Excitement has been high over the sneak peeks at Tron: Ares and Predator: Badlands," reports CNET. (Nine Inch Nails has even recorded a new song for Tron: Ares .)

A few highlights from CNET's coverage:

• The Coyote vs. Acme movie will hit theaters next year "after being rescued from the pile of scrapped ashes left by Warner Bros. Discovery," with footage screened during a Comic-Con panel.

• The first episode of Alien: Earth was screened before its premiere August 12th on FX.

• A panel reunited creators of the animated Avatar: The Last Airbender for its 20th anniversary — and discussed the upcoming sequel series Avatar: Seven Havens.

• A trailer dropped for the new Star Trek: Starfleet Academy series on Paramount+ ("Star Trek Goes Full Gen Z..." quips one headline.)

To capture some of the ambience, the Guardian has a collection of cosplayer photos. CNET notes there's even booths for Lego and Hot Wheels (which released toys commemorating the 40th anniversary of Back to the Future and the 50th anniversary of Jaws).

But while many buildings are "wrapped" with slick advertisements, SFGate notes the ads are technically illegal, "with penalties for each infraction running up to $1,000 per day," (according to the San Diego Union-Tribune). "Last year's total ended up at $22,500."

The Union-Tribune notes that "The fines are small enough that advertisers clearly think it is worth it, with about 30 buildings in the process of being wrapped Monday morning."

"Google has signed its first partnership with a long-duration energy storage company," reports Data Center Dynamics. "The tech giant signed a long-term partnership with Energy Dome to support multiple commercial deployments worldwide to help scale the company's CO2 battery technology."

Google explains in a blog post that the company's technology "can store excess clean energy and then dispatch it back to the grid for 8-24 hours, bridging the gap between when renewable energy is generated and when it is needed." Reuters explains the technology: Energy Dome's CO2-based system stores energy by compressing and liquefying carbon dioxide, which is later expanded to generate electricity. The technology avoids the use of scarce raw materials such as lithium and copper, making it potentially attractive to European policymakers seeking to reduce reliance on critical minerals and bolster energy security.
"Unlike other gases, CO2 can be compressed at ambient temperatures, eliminating the need for expensive cryogenic features," notes CleanTechnica, calling this "a unique new threat to fossil fuel power plants." Google's move "means that more wind and solar energy than ever before can be put to use in local grids." Pumped storage hydropower still accounts for more than 90% of utility scale storage in the US, long duration or otherwise... Energy Dome claims to beat lithium-ion batteries by a wide margin, currently aiming for a duration of 8-24 hours. The company aims to hit the 10-hour mark with its first project in the U.S., the "Columbia Energy Storage Project" under the wing of the gas and electricity supplier Alliant Energy to be located in Pacific, Wisconsin... [B]ut apparently Google has already seen more than enough. An Energy Dome demonstration project has been shooting electricity into the grid in Italy for more than three years, and the company recently launched a new 20-megawatt commercial plant in Sardinia.
Google points out this is one of several Google clean energy initiatives :

• In June Google signed the largest direct corporate offtake agreement for fusion energy with Commonwealth Fusion Systems.

• In October Google agreed to purchase "advanced nuclear" power from multiple small modular reactors being developed by Kairos Power.

• Google also partnered with a clean-energy startup to develop a geothermal power project that contributes carbon-free energy to the electric grid.

Remember asteroid 2024 YR4 (which at one point had a 1 in 32 chance of hitting Earth, before ending up at "impact probability zero")? CNN reports that asteroid is now "zooming beyond the reach of telescopes on its orbit around the sun."

"But as scientists wait for it to reappear, its revised trajectory is now drawing attention to another possible target: the moon." The latest observations of the asteroid in early June, before YR4 disappeared from view, have improved astronomers' knowledge of where it will be in seven years by almost 20%, according to NASA. That data shows that even with Earth avoiding direct impact, YR4 could still pose a threat in late 2032 by slamming into the moon. ["The asteroid's probability of impacting the Moon has slightly increased from 3.8% to 4.3%," writes NASA, and "it would not alter the Moon's orbit."]
CNN calls the probabiliy "small but decent enough odds for scientists to consider how such a scenario might play out." The collision could create a bright flash that would be visible with the naked eye for several seconds, according to Wiegert, lead author of a recent paper submitted to the American Astronomical Society journals analyzing the potential lunar impact. The collision could create an impact crater on the moon estimated at 1 kilometer wide (0.6 miles wide), Wiegert said... It would be the largest impact on the moon in 5,000 years and could release up to 100 million kilograms (220 million pounds) of lunar rocks and dust, according to the modeling in Wiegert's study... Particles the size of large sand grains, ranging from 0.1 to 10 millimeters in size, of lunar material could reach Earth between a few days and a few months after the asteroid strike because they'll be traveling incredibly fast, creating an intense, eye-catching meteor shower, Wiegert said.

"There's absolutely no danger to anyone on the surface," Wiegert said. "We're not expecting large boulders or anything larger than maybe a sugar cube, and our atmosphere will protect us very nicely from that. But they're traveling faster than a speeding bullet, so if they were to hit a satellite, that could cause some damage...." Hundreds to thousands of impacts from millimeter-size debris could affect Earth's satellite fleet, meaning satellites could experience up to 10 years' equivalent of meteor debris exposure in a few days, Wiegert said... While a temporary loss of communication and navigation from satellites would create widespread difficulties on Earth, Wiegert said he believes the potential impact is something for satellite operators, rather than the public, to worry about.
"Any missions in low-Earth orbit could also be in the pathway of the debris, though the International Space Station is scheduled to be deorbited before any potential impact," reports CNN.

And they add that Wiegert also believes even small pieces of debris (tens of centimeters in size) "could present a hazard for any astronauts who may be present on the moon, or any structures they have built for research and habitation... The moon has no atmosphere, so the debris from the event could be widespread on the lunar surface, he added."

"So far, all lifeforms on Earth have a phosphorous-based chemistry, particularly as the backbone of DNA," writes longtime Slashdot reader bshell. "In 2010, a paper was published in Science claiming that arsenic-based bacteria were living in a California lake (in place of phosphorous). That paper was finally retracted by the journal Science the other day." From a report: : Some scientists are celebrating the move, but the paper's authors disagree with it -- saying that they stand by their data and that a retraction is not merited. In Science's retraction statement, editor-in-chief Holden Thorp says that the journal did not retract the paper when critics published take-downs of the work because, back then, it mostly reserved retractions for cases of misconduct, and "there was no deliberate fraud or misconduct on the part of the authors" of the arsenic-life paper. But since then, Science's criteria for retracting papers have expanded, he writes, and "if the editors determine that a paper's reported experiments do not support its key conclusions," as is the case for this paper, a retraction is now appropriate.

"It's good that it's done," says microbiologist Rosie Redfield, who was a prominent critic of the study after its publication in 2010 and who is now retired from the University of British Columbia in Vancouver, Canada. "Pretty much everybody knows that the work was mistaken, but it's still important to prevent newcomers to the literature from being confused." By contrast, one of the paper's authors, Ariel Anbar, a geochemist at Arizona State University in Tempe, says that there are no mistakes in the paper's data. He says that the data could be interpreted in a number of ways, but "you don't retract because of a dispute about data interpretation." If that's the standard you were to apply, he says, "you'd have to retract half the literature."

alternative_right shares a report from Phys.org: Driven by high temperatures in the Gulf, Hurricane Ian rapidly intensified from a Category 3 to Category 5 before making landfall in Southwest Florida on September 28, 2022. The deadly storm caught many by surprise and became the costliest hurricane in state history. Now, researchers from the University of South Florida say they've identified what may have caused Ian to develop so quickly. A strong ocean current called the Loop Current failed to circulate water in the shallow region of the Gulf. As a result, subsurface waters along the West Coast of Florida remained unusually warm during the peak of hurricane season. [...]

The researchers found that if the Loop Current reaches an area near the Dry Tortugas, which they call the "pressure point," it can flush warm waters from the West Florida Shelf and replace it with cold water from deeper regions of the Gulf. This pressure point is where the shallow contours of the seafloor converge, forcing cold water to the surface in a process known as upwelling. In the months leading up to Hurricane Ian, the Loop Current did not reach the pressure point, leaving the waters on the shelf unmixed, which caused both the surface and subsurface waters on the West Florida Shelf to remain warm throughout summer. The findings have been published in Geophysical Research Letters.

Scientists led by Daniel Harrison at Southern Cross University conducted their most successful test of marine cloud brightening technology in February, deploying three vessels nicknamed "Big Daddy and the Twins" in the Palm Islands off northeastern Australia. The ships pumped seawater through hundreds of tiny nozzles to create dense fog plumes and brighten existing clouds, aiming to shade and cool reef waters to prevent coral bleaching caused by rising ocean temperatures.

Harrison's team has been investigating weather modification above the Great Barrier Reef since 2016 and represents the only group conducting open-ocean cloud brightening experiments. The localized geoengineering approach seeks to reduce stress on corals that forces them to expel symbiotic algae during heat waves.

An anonymous reader shares a report: Surveys show that the increasing number of extreme climate events, including floods, wildfires and hurricanes, has not raised awareness of the threats posed by climate change. Instead, people change their idea of what they see as normal. This so-called "boiling frog effect" makes gradual change difficult to spot.

Researchers at Carnegie Mellon University in Pennsylvania wondered if climate change could be made more obvious by presenting it in binary terms. Local newspaper archives describing ice skating on Lake Carnegie when it froze in winter inspired a simple experiment. Some test subjects were shown temperature graphs of a fictional town's winter conditions; others had a chart showing whether or not a fictional lake froze each year. The result, published in Nature, showed those who receiving the second graphic consistently saw climate change as more real and imminent.

Binary data gives a clearer impression of the "before" and "after." The disappearing ice is more vivid and dramatic than a temperature trace, even though the underlying data is the same. "We are literally showing them the same trend, just in different formats," says Rachit Dubey, a co-author of the study. These results should help drive more effective ways of communicating the impact of climate change in future by finding simple binary, black-and-white examples of its effects.

A landmark decision by a top UN court has cleared the way for countries to sue each other over climate change, including over historic emissions of planet-warming gases. BBC: But the judge at the International Court of Justice in the Hague, Netherlands on Wednesday said that untangling who caused which part of climate change could be difficult. The ruling is non-binding but legal experts say it could have wide-ranging consequences. It will be seen as a victory for countries that are very vulnerable to climate change, who came to court after feeling frustrated about lack of global progress in tackling the problem.

A record-breaking heat wave across Western Europe in June and July has triggered a political battle over air conditioning installation, with right-wing parties demanding widespread adoption while government officials warn of environmental consequences. More than 1,000 French schools closed partially or completely due to lack of air conditioning during the heat wave.

Marine Le Pen's far-right National Rally party proposed a major campaign to install air conditioning in schools, hospitals and other institutions. UK Conservatives urged London's Labour mayor to eliminate restrictions on air conditioning in new housing, while Spain's Vox party highlighted air-conditioning breakdowns to criticize establishment parties. French Energy Minister Agnes Pannier-Runacher countered that large-scale air conditioning would heat streets with exhaust, worsening heat waves.

Europe is the fastest-warming continent, heating twice the global average since the 1980s. One study predicts air conditioning will increase Italy's annual power demand by 10% by 2050.

An anonymous reader quotes a report from Phys.org: The mission team of NASA's Jupiter-orbiting Juno spacecraft executed a deep-space move in December 2023 to repair its JunoCam imager to capture photos of the Jovian moon Io. Results from the long-distance save were presented during a technical session on July 16 at the Institute of Electrical and Electronics Engineers Nuclear & Space Radiation Effects Conference in Nashville. JunoCam is a color, visible-light camera. The optical unit for the camera is located outside a titanium-walled radiation vault, which protects sensitive electronic components for many of Juno's engineering and science instruments. This is a challenging location because Juno's travels carry it through the most intense planetary radiation fields in the solar system. While mission designers were confident JunoCam could operate through the first eight orbits of Jupiter, no one knew how long the instrument would last after that. Throughout Juno's first 34 orbits (its prime mission), JunoCam operated normally, returning images the team routinely incorporated into the mission's science papers. Then, during its 47th orbit, the imager began showing hints of radiation damage. By orbit 56, nearly all the images were corrupted.

While the team knew the issue might be tied to radiation, pinpointing what was specifically damaged within JunoCam was difficult from hundreds of millions of miles away. Clues pointed to a damaged voltage regulator that was vital to JunoCam's power supply. With few options for recovery, the team turned to a process called annealing, where a material is heated for a specified period before slowly cooling. Although the process is not well understood, the idea is that heating can reduce defects in the material. Soon after the annealing process finished, JunoCam began cranking out crisp images for the next several orbits. But Juno was flying deeper and deeper into the heart of Jupiter's radiation fields with each pass. By orbit 55, the imagery had again begun showing problems.

"After orbit 55, our images were full of streaks and noise," said JunoCam instrument lead Michael Ravine of Malin Space Science Systems. "We tried different schemes for processing the images to improve the quality, but nothing worked. With the close encounter of Io bearing down on us in a few weeks, it was Hail Mary time: The only thing left we hadn't tried was to crank JunoCam's heater all the way up and see if more extreme annealing would save us." Test images sent back to Earth during the annealing showed little improvement in the first week. Then, with the close approach of Io only days away, the images began to improve dramatically. By the time Juno came within 930 miles (1,500 kilometers) of the volcanic moon's surface on Dec. 30, 2023, the images were almost as good as the day the camera launched, capturing detailed views of Io's north polar region that revealed mountain blocks covered in sulfur dioxide frosts rising sharply from the plains and previously uncharted volcanoes with extensive flow fields of lava. To date, the solar-powered spacecraft has orbited Jupiter 74 times. Recently, the image noise returned during Juno's 74th orbit.

An anonymous reader shares a report: In 2023 and 2024, the hottest years on record, more than 78 million acres of forests burned around the globe. The fires sent veils of smoke and several billion tons of carbon dioxide into the atmosphere, subjecting millions of people to poor air quality. Extreme forest-fire years are becoming more common because of climate change, new research suggests.

"Climate change is loading the dice for extreme fire seasons like we've seen," said John Abatzoglou, a climate scientist at the University of California Merced. "There are going to be more fires like this." The area of forest canopy lost to fire during 2023 and 2024 was at least two times greater than the annual average of the previous nearly two decades, according to a new study published Monday in the journal Proceedings of the National Academy of Sciences.

The researchers used imagery from the LANDSAT satellite network to determine how tree cover had changed from 2002 to 2024, and compared that with satellite detections of fire activity to see how much canopy loss was because of fire. Globally, the area of land burned by wildfires has decreased in recent decades, mostly because humans are transforming savannas and grasslands into less flammable landscapes. But the area of forests burned has gone up.

One in every 9 Americans lives in California. And right now its Congress is debating a bill that "would help establish a regional electricity market capable of tying together the American West's three dozen independent power grids," according to the Los Angeles Times' newsletter about climate change and energy issues.

But that bill "has bitterly divided environmentalists," with some seeing it "as a plot by greedy energy companies to enrich themselves." Supporters say it would smooth the flow of solar and wind power from the sunny, windy landscapes where they're produced most cheaply to the cities where they're most needed. It would help California keep the lights on without fossil fuels, and without driving up utility bills... [S]olar and wind power are still cheaper than planet-warming coal and fossil gas. Which is why Michael Wara, a Stanford energy and climate scholar, isn't worried that SB 540 will leave Californians drowning in dirty power. In a regional market, solar and wind will usually outcompete coal and gas. "Any energy source that requires fuel to operate is more expensive than an energy source that doesn't," he said.

California also needs to prove that a grid powered entirely by clean energy is affordable and reliable. The state's rising electric rates are already a big concern. And although the grid has been stable the last few years, thanks to batteries that store solar for after dark, keeping the lights on with more and more renewables might get harder. Regional market advocates make a strong case that interstate cooperation would help.

For instance, a market would help California more smoothly access Pacific Northwest hydropower, already a key energy source during heat waves. It would also give California easier access to low-cost winds from New Mexico and Wyoming. Best of all, that wind is often blowing strong just as the sun sets along the Pacific. Another benefit: Right now, California often generates more solar than it can use during certain hours of the day, forcing solar farms to shut down — or pay other states to take the extra power. With a regional market, California could sell excess solar to other states, keeping utility bills down. "This is about lowering costs," said Robin Everett, deputy director of the Sierra Club's Beyond Coal Campaign.
"Unlike with past regional market proposals, California would retain control of its grid operator, with only a few functions delegated to a regional entity," the article points out. But opponents still worry this would give new powers to an outside-of-California group to thwart clean energy progress (if not gouge customers). Amendments passed this week add a "Regional Energy Markets Oversight Council" to address that concern — but which lost support for the bill from some of its earlier supporters.

"The amendments would make it easier for the Golden State to bail," notes the climate newsletter, and "Out-of-state utilities don't want to waste time and money committing themselves to a California-led market only to lose California, and thus many of the economic benefits..."

"The distant reaches of the Solar System are still mysterious," writes ScienceAlert. "Not much sunlight pierces these regions, and there are strong hints that undiscovered objects lurk there. The objects that astronomers have discovered in these dim reaches are primordial, and their orbits suggest the presence of more undiscovered objects."

And now thanks to the giant 8.2-meter Subaru telescope at Hawaii's Mauna Kea Observatory, astronomers have discovered "a massive new solar system body located beyond the orbit of Pluto," reports Space.com. The weird elongated orbit of the object suggests that if "Planet Nine" exists, it is much further from the sun than thought, or it has been ejected from our planetary system altogether.

The strange orbit of the object, designated 2023 KQ14 and nicknamed "Ammonite," classifies it as a "sednoid." Sednoids are bodies beyond the orbit of the ice giant Neptune, known as trans-Neptunian objects (TNOs), characterized by a highly eccentric (non-circular) orbit and a distant closest approach to the sun or "perihelion." The closest distance that 2023 KQ14 ever comes to our star is equivalent to 71 times the distance between Earth and the sun... This is just the fourth known sednoid, and its orbit is currently different from that of its siblings, though it seems to have been stable for 4.5 billion years.

However, the team behind the discovery, made using Subaru Telescope as part of the Formation of the Outer Solar System: An Icy Legacy (FOSSIL) survey, thinks that all four sednoids were on similar orbits around 4.2 billion years ago. That implies something dramatic happened out at the edge of the solar system around 400 million years after its birth. Not only does the fact that 2023 KQ14 now follows a unique orbit suggest that the outer solar system is more complex and varied than previously thought, but it also places limits on a hypothetical "Planet Nine" theorized to lurk at the edge of the solar system.
There's "no viable transfer mechanisms" to explain the observed orbits "with the current configuration of planets," according to the team's recently-published paper. But since those orbits are stable, it "suggests that an external gravitational influence beyond those of the currently known Solar System planets is required to form their orbits." So where does that leave us? ScienceAlert summarizes the rest of the paper — and where things stand now: Astronomers have proposed many sources for this external gravitational influence, including interactions with a rogue planet or star, ancient stellar interactions from when the Sun was still in its natal cluster, and the capture of objects from other lower-mass stars in the Solar System's early times. But the explanation that gets the most attention is interactions with a hypothetical planet, Planet Nine.

If Planet Nine exists, it has a huge area to hide in. Some astronomers who have studied its potential existence think it could be the fifth largest planet in the Solar System. It would be so far away that it would be extremely dim. However, we may be on the cusp of detecting it, if it exists. The Vera Rubin Observatory recently saw first light and will begin its decade-long Legacy Survey of Space and Time (LSST). The LSST will find transient events and objects in the Solar System like no other telescope before it. It's purpose-built to find hard-to-detect objects, and not even an elusive object like Planet Nine may be able to hide from it.

An anonymous reader shared this report from the Washington Post: Ships trigger seafloor methane emissions while moving through shallow water, researchers report in Communications Earth & Environment. The scientists say the unexpected discovery has nothing to do with the type of fuel used by the ship. Instead, "ship-induced pressure changes and turbulent mixing" trigger the release of the gas from the seafloor. Bubbles and gas diffusion push the methane into the atmosphere, where it acts as a greenhouse gas...

Container and cruise ships triggered the largest and most frequent methane emissions, but the study suggests that ships of all kinds, regardless of their type of engine or size, trigger methane emissions. Researchers said they observed emissions that were 20 times higher in the shipping lane than in undisturbed nearby areas. Given the number of ports in similarly shallow areas worldwide, it's important to learn more about emissions in shipping lanes and to better estimate their "hitherto unknown impact," study co-author Johan Mellqvist, a professor of optical remote sensing at Chalmers University of Technology in Sweden, said in a news release.

Electronic messages travel faster than seismic waves, Gizmodo points out — meaning some people near an earthquake receive an Android Earthquake Alert "before the seismic waves reach them — and even a few seconds could be just enough time to hide under a table or run outside."

Richard Allen from the University of California in Berkeley's Seismological Laboratory, writes in a new study that "The global adoption of smartphone technology places sophisticated sensing and alerting capabilities in people's hands, in both the wealthy and less-wealthy portions of the planet."

From Gizmodo: According to the study, 70% of the world's smartphones are Android phones, which by default come with the aforementioned sensing and alerting capabilities. From 2021 to 2024, the Android Earthquake Alert (AEA) system detected an average of 312 earthquakes per month across 98 countries. The earthquakes had a magnitude between 1.9 and 7.8, and the system alerted users of earthquakes at or over a magnitude of 4.5, averaging around 60 events and 18 million alerts per month. The AEA system also collected user feedback, revealing that 85% of users who received alerts experienced shaking, with 36% receiving the alert before, 28% during, and 23% after the shaking began...

"AEA demonstrates that globally distributed smartphones can be used to detect earthquakes and issue warnings at scale with an effectiveness comparable to established national systems," the researchers wrote.
The system detected 11,231 earthquakes between April of 2021 and March of 2024, according to the study, which notes that the length of the advanced warning "ranged from seconds up to a minute" for moderate shaking, and about 15 seconds for the strongest shaking.

Historian Garrett M. Graff describes his upcoming book, The Devil Reached Toward the Sky: An Oral History of the Making and Unleashing of the Atomic Bomb. "I assembled an oral history of the Manhattan Project, the bombings of Hiroshima and Nagasaki and the end of World War II in the Pacific, told through the voices of around 500 participants and witnesses of the events — including luminaries like Albert Einstein and Oppenheimer and political figures like President Harry Truman."

It was 80 years ago this week that physicists and 150 other leaders in the atomic bomb program "gathered in the desert outside Alamogordo, New Mexico, for the world's first test of a nuclear explosion." In an except from his upcoming book, Graff publishes quotes from eyewitness: Brig. Gen. Leslie Groves: I had become a bit annoyed with Fermi when he suddenly offered to take wagers from his fellow scientists on whether or not the bomb would ignite the atmosphere, and if so, whether it would merely destroy New Mexico or destroy the world. He had also said that after all it wouldn't make any difference whether the bomb went off or not because it would still have been a well worthwhile scientific experiment. For if it did fail to go off, we would have proved that an atomic explosion was not possible. Afterward, I realized that his talk had served to smooth down the frayed nerves and ease the tension of the people at the base camp, and I have always thought that this was his conscious purpose. Certainly, he himself showed no signs of tension that I could see...

As the hour approached, we had to postpone the test — first for an hour and then later for 30 minutes more — so that the explosion was actually three- and one-half hours behind the original schedule... Our preparations were simple. Everyone was told to lie face down on the ground, with his feet toward the blast, to close his eyes and to cover his eyes with his hands as the countdown approached zero. As soon as they became aware of the flash they could turn over and sit or stand up, covering their eyes with the smoked glass with which each had been supplied... The quiet grew more intense. I, myself, was on the ground between Bush and Conant...

Edward Teller: We all were lying on the ground, supposedly with our backs turned to the explosion. But I had decided to disobey that instruction and instead looked straight at the bomb. I was wearing the welder's glasses that we had been given so that the light from the bomb would not damage our eyes. But because I wanted to face the explosion, I had decided to add some extra protection. I put on dark glasses under the welder's glasses, rubbed some ointment on my face to prevent sunburn from the radiation, and pulled on thick gloves to press the welding glasses to my face to prevent light from entering at the sides... We all listened anxiously as the broadcast of the final countdown started; but, for whatever reason, the transmission ended at minus five seconds...

Kenneth T. Bainbridge: My personal nightmare was knowing that if the bomb didn't go off or hang-fired, I, as head of the test, would have to go to the tower first and seek to find out what had gone wrong...

Brig. Gen. Thomas F. Farrell: Dr. Oppenheimer held on to a post to steady himself. For the last few seconds, he stared directly ahead.
A few examples of how they remembered the explosion:

• William L. Laurence: There rose from the bowels of the earth a light not of this world, the light of many suns in one.

• Kenneth T. Bainbridge: I felt the heat on the back of my neck, disturbingly warm.

• George B. Kistiakowsky: I am sure that at the end of the world — in the last millisecond of the earth's existence — the last man will see what we have just seen.

• Brig. Gen. Thomas F. Farrell: Oppenheimer's face relaxed into an expression of tremendous relief.

• J. Robert Oppenheimer: We knew the world would not be the same. A few people laughed, a few people cried.

• Norris Bradbury, physicist, Los Alamos Lab: Some people claim to have wondered at the time about the future of mankind. I didn't. We were at war, and the damned thing worked.

Felix Baumgartner has died. He was 56.

In 2012 Slashdot extensively covered the skydiver's "leap from the edge of space." ABC News remembers it as a Red Bull-financed stunt that involved "diving 24 miles from the edge of space, in a plummet that reached a speed of more than 500 mph." Baumgartner recalled the legendary jump in the documentary, "Space Jump," and said, "I was the first human being outside of an aircraft breaking the speed of sound and the history books. Nobody remembers the second one...."

Baumgartner, also known as "Fearless Felix," accomplished many records in his career, including setting the world record for highest parachute jump atop the Petronas Towers in Malaysia, flying across the English Channel in a wingsuit in 2003, and base jumping from the 85-foot arm of the Christ the Redeemer statue in Brazil in 2007.
"Baumgartner's altitude record stood for two years," remembers the Los Angeles Times, "until Google executive Alan Eustace set new marks for the highest free-fall jump and greatest free-fall distance."

They report that Baumgartner died Thursday "while engaged in a far less intense activity, crashing into the side of a hotel swimming pool while paragliding in Porto Sant Elpidio, a town on central Italy's eastern coast." More details from the Associated Press: "It is a destiny that is very hard to comprehend for a man who has broke all kinds of records, who has been an icon of flight, and who traveled through space," Mayor Massimiliano Ciarpella told The Associated Press.Ciarpella said that Baumgartner had been in the area on vacation, and that investigators believed he may have fallen ill during the fatal flight... Baumgartner, a former Austrian military parachutist, made thousands of jumps from planes, bridges, skyscrapers and famed landmarks...
ABC News remembers that in 2022 Baumgartner wrote in Newsweek that "Since I was a little kid, I've always looked up to people who left a footprint on this planet... now I think I have left a footprint...

"I believe big dreamers always win."

At Sotheby's Geek Week auction, the largest known Martian meteorite on Earth sold for a record-breaking $5.3 million. The Associated Press reports: The 54-pound (25-kilogram) rock named NWA 16788 was discovered in the Sahara Desert in Niger by a meteorite hunter in November 2023, after having been blown off the surface of Mars by a massive asteroid strike and traveling 140 million miles (225 million kilometers) to Earth, according to Sotheby's. The estimated sale price before the auction was $2 million to $4 million. The identity of the buyer was not immediately disclosed. The final bid was $4.3 million. Adding various fees and costs, the official sale price was about $5.3 million, making it the most valuable meteorite ever sold at auction, Sotheby's said.

The live bidding was slow, with the auctioneer trying to coax more offers and decreasing the minimum bid increases. [...] The bidding for the Mars meteorite began with two advance offers of $1.9 million and $2 million. The live bidding slowly proceeded with increases of $200,000 and $300,000 until $4 million, then continued with $100,000 increases until reaching $4.3 million. The red, brown and gray meteorite is about 70% larger than the next largest piece of Mars found on Earth and represents nearly 7% of all the Martian material currently on this planet, Sotheby's says. It measures nearly 15 inches by 11 inches by 6 inches (375 millimeters by 279 millimeters by 152 millimeters). It was also a rare find. There are only 400 Martian meteorites out of the more than 77,000 officially recognized meteorites found on Earth, the auction house says.