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Sci-Fi

'Amazing' New Technology Set To Transform the Search For Alien Life (theguardian.com) 127

Robin McKie writes via The Guardian: Scientists with Breakthrough Listen, the world's largest scientific research program dedicated to finding alien civilizations, say a host of technological developments are about to transform the search for intelligent life in the cosmos. These innovations will be outlined at the group's annual conference, which is to be held in the UK for the first time, in Oxford, this week. Several hundred scientists, from astronomers to zoologists, are expected to attend. "There are amazing technologies that are under development, such as the construction of huge new telescopes in Chile, Africa and Australia, as well as developments in AI," said astronomer Steve Croft, a project scientist with Breakthrough Listen. "They are going to transform how we look for alien civilizations."

Among these new instruments are the Square Kilometer Array, made up of hundreds of radio telescopes now being built in South Africa and Australia, and the Vera Rubin Observatory that is being constructed in Chile. The former will become the world's most powerful radio astronomy facility while the latter, the world's largest camera, will be able to image the entire visible sky every three or four nights, and is expected to help discover millions of new galaxies and stars. Both facilities are set to start observations in the next few years and both will provide data for Breakthrough Listen. Using AI to analyze these vast streams of information for subtle patterns that would reveal evidence of intelligent life will give added power to the search for alien civilizations, added Croft.

"Until now, we have been restricted to looking for signals deliberately sent out by aliens to advertise their existence. The new techniques are going to be so sensitive that, for the first time, we will be able to detect unintentional transmissions as opposed to deliberate ones and will be able to spot alien airport radar, or powerful TV transmitters -- things like that." [...] Croft remains optimistic that we will soon succeed in making contact. "We know that the conditions for life are everywhere, we know that the ingredients for life are everywhere. I think it would be deeply weird if it turned out we were the only inhabited planet in the galaxy or in the universe. But you know, it's possible."

Biotech

Startup Makes Butter Using CO2 and Water (newatlas.com) 206

A Californian startup funded by Bill Gates is making rich, fatty "butter" using just carbon dioxide and hydrogen, with other dairy-free alternatives in the works. New Atlas reports: The San Jose company, Savor, uses a thermochemical process to create its animal-like fat, which is free of the environmental footprint of both the dairy industry and plant-based alternatives. "They started with the fact that all fats are made of varying chains of carbon and hydrogen atoms," Gates wrote in a blog post. "Then they set out to make those same carbon and hydrogen chains -- without involving animals or plants. They ultimately developed a process that involves taking carbon dioxide from the air and hydrogen from water, heating them up, and oxidizing them to trigger the separation of fatty acids and then the formulation of fat."

"The idea of switching to lab-made fats and oils may seem strange at first," Gates wrote. "But their potential to significantly reduce our carbon footprint is immense. By harnessing proven technologies and processes, we get one step closer to achieving our climate goals." Savor's 'butter' is easily produced and scalable, but convincing people to swap out butter and other dairy products for 'experimental' foods will remain a challenge for the foreseeable future. Gates is hoping, however, that his support will do more than start a conversation. "The process doesn't release any greenhouse gases, and it uses no farmland and less than a thousandth of the water that traditional agriculture does," he added. "And most important, it tastes really good -- like the real thing, because chemically it is."
The research has been published in the journal Nature Sustainability.
NASA

NASA Transmits Hip-Hop Song To Deep Space for First Time (nasa.gov) 89

NASA: The stars above and on Earth aligned as an inspirational message and lyrics from the song "The Rain (Supa Dupa Fly)" by hip-hop artist Missy Elliott were beamed to Venus via NASA's DSN (Deep Space Network). The agency's Jet Propulsion Laboratory in Southern California sent the transmission at 10:05 a.m. PDT on Friday, July 12. As the largest and most sensitive telecommunication service of NASA's Space Communications and Navigation (SCaN) program, the DSN has an array of giant radio antennas that allow missions to track, send commands, and receive scientific data from spacecraft venturing to the Moon and beyond. To date, the system has transmitted only one other song into space, making the transmission of Elliott's song a first for hip-hop and NASA.

"Both space exploration and Missy Elliott's art have been about pushing boundaries," said Brittany Brown, director, Digital and Technology Division, Office of Communications at NASA Headquarters in Washington, who initially pitched ideas to Missy's team to collaborate with the agency. "Missy has a track record of infusing space-centric storytelling and futuristic visuals in her music videos, so the opportunity to collaborate on something out of this world is truly fitting." The song traveled about 158 million miles (254 million kilometers) from Earth to Venus -- the artist's favorite planet. Transmitted at the speed of light, the radio frequency signal took nearly 14 minutes to reach the planet. The transmission was made by the 34-meter (112-foot) wide Deep Space Station 13 (DSS-13) radio dish antenna, located at the DSN's Goldstone Deep Space Communications Complex, near Barstow in California. Coincidentally, the DSS-13 also is nicknamed Venus.

Moon

Radar Images Suggest There's a Tunnel On the Moon (gizmodo.com) 58

Longtime Slashdot reader fahrbot-bot shares a report from Gizmodo: A team of researchers think they've discovered a cave on the Moon in radar images of the lunar surface, which they posit could be a future site for an established human presence on our rocky satellite. The tunnel is in the Mare Tranquillitatis (Sea of Tranquility) pit, the deepest known pit on the Moon. (If the name is familiar to you, the Sea of Tranquility is where the Apollo 11 mission landed in 1969.) The pit formed due to a lava tube's roof collapse or a collapse of a void structure created by tectonic processes. To look for potential cave structures within the pit, the researchers studied side-looking radar images taken by the Lunar Reconnaissance Orbiter's Mini-RF instrument between 2009 and 2011. The team then conducted 3D radar simulations of potential geometries of the pit and its cave, to determine that the brightness they saw in radar images could be due to subsurface features. Ultimately, the team determined there is a tunnel in the pit that is between 98 feet (30 meters) long and 262ft (80m) long. The tunnel is roughly 148ft (45m) wide and is either flat or inclined with a maximum steepness of 45 degrees. "The exploration of lunar caves through future robotic missions could provide a fresh perspective on the lunar subsurface and yield new insights into the evolution of lunar volcanism," the team wrote in the paper. "Furthermore, direct exploration could confirm the presence of stable subsurface environments shielded from radiation and with optimal temperature conditions for future human utilization."

The findings have been published in the journal Nature Astronomy.
Medicine

Scientists Discover How Pancreatic Cancer Switches Off a 'Tumor Suppressor' Gene (theguardian.com) 25

An anonymous reader shared this report from the Guardian: A team of researchers from the UK and US have found that pancreatic cancer is able to shut down molecules in one of the body's most important genes, helping the disease to grow and spread rapidly... Dr Maria Hatziapostolou, of Nottingham Trent University's John van Geest Cancer Research Centre, said: "This work, which has provided new understanding and knowledge of how the cancer behaves, will hopefully help pave the way for potential new treatments in the future...."

For the study, published in the journal Gastro Hep Advances, the researchers analysed healthy as well as pancreatic cancer tissue samples. They found pancreatic cancers triggered a process known as DNA methylation, causing molecules in the normally beneficial HNF4A gene to switch off, allowing tumours to grow extremely quickly. The HNF4A gene is crucial to human health because it helps many of the body's organs to function properly. But the researchers discovered pancreatic cancer can covertly disable the gene's benefits. Hatziapostolou said: "Loss of HNF4A drives pancreatic cancer development and aggressiveness and we now know correlates with poor patient survival."

Scientists from the University of Nottingham, Stanford University and the University of California and Cedars-Sinai medical centre, Los Angeles, were also involved in the project.

The published study calls the targeted HNF4A gene is "a novel tumor suppressor in pancreatic cancer, regulating cancer growth and aggressiveness."

And ultimately, according to the Guardian, pancreatic cancer "is the 12th most common cancer worldwide," according to the Guardian, "with more than half a million people diagnosed every year. It has the worst survival rates of all the most common forms of the disease."

The researchers paper ends with this conclusion. "HNF4A silencing... drives pancreatic cancer development and aggressiveness leading to poor patient survival."
ISS

Virgin Galactic Flies 3D Printer Into Space. Its Next Mission: Bioprinting on the ISS (berkeley.edu) 13

"In a significant advancement for space technology, a team of UC Berkeley researchers, led by doctoral student Taylor Waddell, successfully launched a 3D printer into space," reports the university's student newspaper: As part of the Virgin Galactic 07 mission, the team sent a 3D printer named SpaceCAL to space to explore the potential of Computed Axial Lithography, or CAL, and additive manufacturing in space... During its 140-second flight in suborbital space, the SpaceCAL printer autonomously detected microgravity and printed four test parts: two space shuttles and two Benchies, or 3D-printed boats created to check the printer's accuracy, according to Sean Chu, a member of the team who worked on designing structures and mechanisms. Within the 140 seconds, the process involved multiple steps such as printing, post-washing, flushing with water and post-curing with light to fully solidify the parts.
But that's just the beginning, says the university's engineering department: To date, CAL has shown that it can successfully print with more than 60 different materials on Earth, such as silicones, glass composites and biomaterials. According to Waddell, this versatility could come in handy for both the cabin and the crew... "CAL is also capable of repairing the crew. We can print dental replacements, skin grafts or lenses, or things personalized in emergency medicine for astronauts, which is very important in these missions, too."

Someday, CAL may be used to print even more sophisticated parts, such as human organs. Lawrence Livermore National Lab has received a grant from NASA to test this technology on the International Space Station. "They're going to basically do bioprinting on the Space Station," said Waddell. "And the long, long-term goal is to print organs up in space with CAL, then bring them back down to Earth." Next, Waddell and his colleagues hope to begin work with NASA on developing and validating a single object that could support crew health and wellness, like a dental crown for an astronaut or a surgical wound closure tool...

This project was made possible through a $1.4 million grant and engineering support provided by NASA. In addition, Virgin Galactic played a pivotal role in taking this project to the next level.

NASA

Fastest Object Ever Made By Humans Continues Circling the Sun, 500x Faster Than Sound (sciencealert.com) 61

An anonymous reader shared this report from ScienceAlert: NASA's Parker Solar Probe, tasked with taking a close-up look at the Sun's outer corona, has just equalled the record for the fastest-moving human-made object ever. The previous record holder? The Parker Solar Probe, again. The probe was recorded traveling at 635,266 kilometers (394,736 miles) per hour on June 29, the second time it's reached that speed since it launched in 2018. We're talking around 500 times faster than the speed of sound here. It's on course to get even faster too, with a top speed of around 692,000 kph (430,000 mph) expected when it makes its closest approach to the Sun in 2025.
It's the probe's 20th approach to the sun, according to the article, with the probe using Venus "to create a sort of gravity-powered slingshot," according to the article. (NASA has created a nice interactive 3D model of the probe...)

Besides collecting particle samples in 2021, "The probe is eventually going to get nice and close to the swirling mass of ultra-hot plasma surrounding the Sun, and take a wealth of different measurements to help improve our scientific understanding of it."
Space

Joe Engle, the Last Living X-15 Pilot, Passed Away July 10 At the Age of 91 (nasa.gov) 10

clovis (Slashdot reader #4,684) writes: Joe Engle received his astronaut wings in a ceremony on July 15, 1965, for his flight in the hypersonic aircraft, reaching an altitude of 50 miles above the Earth. At 32, he was the youngest man to become an astronaut.

Later, he entered the Apollo program and eventually commanded the STS-2 flight of the Space Shuttle.

Here is an interview from 2004. I thought it was interesting that they used the F-104 as the chase plane and for training because the flight characteristics were so similar, which says a lot about the F-104.

Anyway, the X-15 project was a big deal for us science/geek types back when I was a kid. I wonder if it's something today's generation is even aware of.

Space

NATO Countries Pledge $1 Billion To Strengthen Collection, Sharing of Space-Based Intel (defensescoop.com) 50

An anonymous reader quotes a report from DefenseScoop: A group of NATO countries are set to begin implementing a new project aimed at improving the alliance's ability to quickly share intelligence gathered by space-based assets operated by both member nations and the commercial sector. Seventeen NATO members signed a memorandum of understanding for the Alliance Persistence Surveillance from Space (APSS) program as part of the annual NATO summit being held in Washington this week, the alliance announced Tuesday. Members will now move into a five-year implementation phase of the project, during which allies will contribute more than $1 billion "to leverage commercial and national space assets, and to expand advanced exploitation capacities," according to a press release.

The United States is one of the nations signed onto the initiative, as well as Belgium, Canada, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Luxembourg, the Netherlands, Norway, Poland, Romania, Sweden and Turkey, according to a NATO source. The transatlantic organization created APSS last year with the intent to establish a "virtual constellation" -- dubbed Aquila -- comprising both national and commercial space systems, sensors and data that can be used by NATO's command structure and other allies. The project is considered "the largest multinational investment in space-based capabilities" in the alliance's history, and is set to increase NATO's ability "to monitor activities on the ground and at sea with unprecedented accuracy and timeliness," a press release stated.

Participating nations will be able to use their own space systems, provide tools for intelligence collection and analysis, or purchase space-based data gathered by commercial constellations. "Integrating and exploiting data from space effectively has been a growing challenge over time," a NATO press release stated. "By leveraging latest technologies from industry, APSS will help advance NATO's innovation agenda and offer a new platform to engage with the growing space industry." The APSS project is part of the larger implementation of NATO's overarching space policy adopted in 2019, which officially recognized space as a new operational domain. Since then, the alliance has worked to bolster its presence in space -- including the establishment of a NATO Space Centre in 2020 and approval of an official Space Branch within the Allied Command Transformation in June.

Space

Dune-Inspired Spacesuit Recycles Urine Into Clean Drinking Water (phys.org) 58

Researchers from Cornell University have developed a novel urine collection and filtration system for spacesuits, designed to improve hygiene and comfort for astronauts during long spacewalks. This new system, inspired by the 'stillsuits' from the Dune franchise, recycles urine into potable water using a vacuum-based external catheter and a forward-reverse osmosis unit. It's expected to be tested for use in upcoming NASA moon and Mars missions. Phys.Org reports: [Researchers] have now designed a urine collection device, including an undergarment made of multiple layers of flexible fabric. This connects to a collection cup (with a different shape and size for women and men) of molded silicone, to fit around the genitalia. The inner face of the collection cup is lined with polyester microfiber or a nylon-spandex blend, to draw urine away from the body and towards the inner cup's inner face, from where it is sucked by a vacuum pump. A RFID tag, linked to an absorbent hydrogel, reacts to moisture by activating the pump.

Once collected, the urine is diverted to the urine filtration system, where it gets recycled with an efficiency of 87% through a two-step, integrated forward and reverse osmosis filtration system. This uses a concentration gradient to remove water from urine, plus a pump to separate water from salt. The purified water is then enriched in electrolytes and pumped into the in-suit drink bag, again available for consumption. Collecting and purifying 500ml of urine takes only five minutes.

The system, which integrates control pumps, sensors, and a liquid-crystal display screen, is powered by a 20.5V battery with a capacity of 40 amp-hours. Its total size is 38 by 23 by 23 cm, with a weight of approximately eight kilograms: sufficiently compact and light to be carried on the back of a spacesuit. Now that the prototype is available, the new design can be tested under simulated conditions, and subsequently during real spacewalks.
The design has been published in the journal Frontiers in Space Technology.
Space

SpaceX's Historic Falcon 9 Success Streak Is Over (reuters.com) 46

An anonymous reader quotes a report from Reuters: SpaceX's workhorse Falcon 9 rocket was grounded by the U.S. Federal Aviation Administration (FAA) on Friday after one broke apart in space and doomed its payload of Starlink satellites, the first failure in more than seven years of a rocket relied upon by the global space industry. Roughly an hour after Falcon 9 lifted off from the Vandenberg Space Force Base in California on Thursday night, the rocket's second stage failed to reignite and deployed its 20 Starlink satellites on a shallow orbital path where they will soon reenter and burn up in Earth's atmosphere.

The attempt to reignite the engine "resulted in an engine RUD for reasons currently unknown," SpaceX CEO Elon Musk wrote early on Friday on his social media platform X, using an industry acronym for Rapid Unscheduled Disassembly that usually means explosion. The Falcon 9 will be grounded until SpaceX investigates the cause of the failure, fixes the rocket and receives the agency's approval, the FAA said in a statement. That process could take several weeks or months, depending on the complexity of the failure and SpaceX's plan to fix it. Musk said SpaceX was updating the software of the Starlink satellites to force their on-board thrusters to fire harder than usual to avoid a fiery atmospheric re-entry. "Unlike a Star Trek episode, this will probably not work, but it's worth a shot," Musk said.

The satellites' altitude is so shallow that Earth's gravity is pulling them 3 miles (5 km) closer toward the atmosphere with each orbit, SpaceX later said, confirming they would inevitably "re-enter Earth's atmosphere and fully demise." SpaceX said the second stage's failure occurred after engineers detected a leak of liquid oxygen, a propellant. The mishap occurred on Falcon 9's 354th mission. It was the first Falcon 9 failure since 2016, when a rocket exploded on a launch pad in Florida and destroyed its customer payload, an Israeli communications satellite.
The failure "breaks a success streak of more than 300 straight missions," notes Reuters.

"We knew this incredible run had to come to an end at some point," Tom Mueller, SpaceX's former vice president of propulsion who designed Falcon 9's engines. "... The team will fix the problem and start the cycle again."
Science

Rivers Becoming 'Reservoirs of Disease' (bbc.com) 54

Scientists say "a reservoir of disease" is being created after discovering bacteria that naturally occur in rivers are becoming resistant to antibiotics due to the impact of sewage. From a report: Researchers at the University of Suffolk said bacterial strains found on the non-tidal section of the River Deben in Suffolk had acquired resistance by exchanging DNA with antibiotic resistant E. coli. Some bacteria have become resistant to the antibiotic carbapenem, which is used as the last line of defence in fighting infections already resistant to traditional antibiotics. Dr Nick Tucker, a microbiologist leading the research, described the discovery as "particularly worrying."

"Organisms that are currently low risk are being mixed with pathogenic organisms from sewage," he said. "We're needlessly adding pathogenic and virulence genes to bacteria found in the environment, and that could be creating a reservoir of disease." The team has been working closely with citizen scientists from the Deben Climate Centre, who have been taking water samples for two years. They have also been working with scientists at the government's CEFAS laboratories, who have helped identify the new strains that are being screened for their resistance to six of the most commonly-used antibiotics. The River Deben rises in Debenham, Suffolk, before flowing through Woodbridge and down to the North Sea.

Science

When Scientific Citations Go Rogue (theconversation.com) 19

The Conversation: Reading and writing articles published in academic journals and presented at conferences is a central part of being a researcher. When researchers write a scholarly article, they must cite the work of peers to provide context, detail sources of inspiration and explain differences in approaches and results. A positive citation by other researchers is a key measure of visibility for a researcher's own work. But what happens when this citation system is manipulated? A recent Journal of the Association for Information Science and Technology article by our team of academic sleuths -- which includes information scientists, a computer scientist and a mathematician -- has revealed an insidious method to artificially inflate citation counts through metadata manipulations: sneaked references.

People are becoming more aware of scientific publications and how they work, including their potential flaws. Just last year more than 10,000 scientific articles were retracted. The issues around citation gaming and the harm it causes the scientific community, including damaging its credibility, are well documented. Citations of scientific work abide by a standardized referencing system: Each reference explicitly mentions at least the title, authors' names, publication year, journal or conference name, and page numbers of the cited publication. These details are stored as metadata, not visible in the article's text directly, but assigned to a digital object identifier, or DOI -- a unique identifier for each scientific publication.

References in a scientific publication allow authors to justify methodological choices or present the results of past studies, highlighting the iterative and collaborative nature of science. However, we found through a chance encounter that some unscrupulous actors have added extra references, invisible in the text but present in the articles' metadata, when they submitted the articles to scientific databases. The result? Citation counts for certain researchers or journals have skyrocketed, even though these references were not cited by the authors in their articles.

Space

Pluto's Not Coming Back, But Astronomers Want To Redefine Planets Again (axios.com) 129

A group of astronomers want to change the definition of a planet. Their new proposed definition wouldn't bring Pluto back into the planetary fold, but it could reclassify thousands of celestial bodies across the universe. From a report: The International Astronomical Union's (IAU) current definition of a planet, established in 2006, includes only celestial bodies that are nearly round, are gravitationally dominant and orbit our Sun. This Sun-centric definition excludes all of the bodies we've discovered outside our solar system, even if they may fit all other parameters. They are instead considered exoplanets. Those behind the new proposal critiqued the IAU's definition in an upcoming paper in the Planetary Science Journal, arguing it's vague, not quantitative and unnecessarily exclusionary.

Their new proposal would instead classify planets based on their mass, considering a planet to be any celestial body that:
1. orbits one or more stars, brown dwarfs or stellar remnants and,
is more massive than 10ÂÂ kilograms (kg) and,
is less massive than 13 Jupiter masses (2.5 X 10^28Âkg).

Space

Model Rocket Nails Vertical Landing After Three-Year Effort (hackaday.com) 81

Aryan Kapoor, a high schooler from JRD Propulsion, successfully developed a model rocket with SpaceX-style vertical landing capabilities. The three-year effort was made possible by a thrust-vector control and clever landing gear design. Hackaday reports: He started in 2021 with none of the basic skills needed to pull off something like this, but it seems like he quickly learned the ropes. His development program was comprehensive, with static test vehicles, a low-altitude hopper, and extensive testing of the key technology: thrust-vector control. His rocket uses two solid-propellant motors stacked on top of each other, one for ascent and one for descent and landing. They both live in a 3D printed gimbal mount with two servos that give the stack plus and minus seven degrees of thrust vectoring in two dimensions, which is controlled by a custom flight computer with a barometric altimeter and an inertial measurement unit. The landing gear is also clever, using rubber bands to absorb landing forces and syringes as dampers. You can watch the first successful test flight and landing on YouTube.

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