Category: 7. Science

  • Jim Lovell, who guided Apollo 13 safely back to Earth, dies aged 97

    Jim Lovell, who guided Apollo 13 safely back to Earth, dies aged 97

    Getty Images James Lovell is photographed wearing his astronaut suit albeit without his helmet.Getty Images

    Astronaut Jim Lovell, who guided the Apollo 13 mission safely back to Earth in 1970, has died aged 97.

    Nasa said he “turned a potential tragedy into a success” after an attempt to land on the Moon was aborted due to an explosion onboard the spacecraft while it was hundreds of thousands of miles from Earth.

    Tens of millions watched on television as Lovell and two other astronauts splashed back down into the Pacific Ocean, a moment which has become one of the most iconic in the history of space travel.

    Lovell, who was also part of the Apollo 8 mission, was the first man to go to the Moon twice.

    Acting Nasa head Sean Duffy said Lovell helped the US space programme to “forge a historic path”.

    In a statement, Lovell’s family said: “We will miss his unshakeable optimism, his sense of humor, and the way he made each of us feel we could do the impossible. He was truly one of a kind.”

    Lovell’s remarkable life

    One Saturday, a 16-year-old hauled a heavy, three-foot tube into the middle of a large field in Wisconsin.

    He had persuaded his science teacher to help him make a makeshift rocket. Somehow, he managed to get his hands on the ingredients for gunpowder – potassium nitrate, sulphur and charcoal.

    He pulled on a welder’s helmet for protection. He packed it with powder, struck a match and ran like hell.

    The rocket rose 80 feet into the air and exploded. Had the chemicals been packed slightly differently, he would have been blown to pieces.

    For Jim Lovell, this was more than a childish lark.

    In achieving his dream to be a rocket scientist, he would become an American hero. But it wasn’t going to be easy.

    Getty Images The crew of the ill-fated Apollo 13: Jack Swigert, Jim Lovell and Fred Haise. They are holding models of the craftGetty Images

    The crew of the ill-fated Apollo 13: Jack Swigert, Jim Lovell and Fred Haise

    James Arthur Lovell Jr was born on 25 March 1928 – just a year after Charles Lindbergh made his historic trip across the Atlantic.

    “Boys like either dinosaurs or airplanes,” he said. “I was very much an airplane boy.”

    But when he was five years old, his father died in a car accident.

    His mother, Blanche, worked all hours – struggling to keep the family in clothes and food. University was well beyond their financial reach.

    Navy pilot

    The answer was the US Navy, which was hungry for new pilots after World War II. It wasn’t building rockets but at least it involved flying.

    Lovell signed up to a programme that sent him to college at the military’s expense while training as a fighter pilot.

    Two years in, he gambled and switched to the Navy Academy at Annapolis, on Chesapeake Bay, in the hope of working with his beloved rockets.

    It was a lucky decision.

    A few months later, the Korean War broke out and his former fellow apprentice pilots were sent to South East Asia. Many never got to finish their education.

    Marriage was banned at Annapolis and girlfriends discouraged. The navy did not want its midshipmen wasting their time on such frivolities.

    But Lovell had a sweetheart. Marilyn Gerlach was the high school girl he’d shyly asked to the prom.

    Women were not allowed on campus and trips outside were limited to 45 minutes. Somehow the relationship survived.

    Just hours after his graduation in 1952, the newly commissioned Ensign Lovell married her.

    They would be together for more than 70 years, until Marilyn’s death in 2023.

    Getty Images A black and white photo of Jim and Marilyn LovellGetty Images

    Jim and Marilyn Lovell were high school sweethearts

    He did everything he could to advertise his love of rocketry.

    His thesis at the Navy Academy was in the unheard of topic of liquid-fuel engines. After graduation, he hoped to specialise in this pioneering new technology.

    But the navy had other ideas.

    Lovell was assigned to an aircraft carrier group flying Banshee jets off ships at night. It was a white-knuckle, high-wire business fit only for daredevils. But for Lovell, it wasn’t enough.

    Space

    In 1958, he applied to Nasa.

    Project Mercury was America’s attempt to place a man in orbit around the Earth. Jim Lovell was one of the 110 test pilots considered for selection but a temporary liver condition put paid to his chances.

    Four years later, he tried again.

    In June 1962, after gruelling medical tests, Nasa announced its “New Nine”. These would be the men to deliver on President Kennedy’s pledge to put American boots on the Moon.

    It was the most elite group of flying men ever assembled. They included Neil Armstrong, John Young and, fulfilling his childhood dream, Jim Lovell.

    Getty Images The crew of Apollo 8 in training. They are shown strapped into their seats.Getty Images

    Apollo 8 was Nasa’s most dangerous mission yet

    Three years later he was ready.

    His first trip into space was aboard the two-man Gemini 7. Lovell and fellow astronaut Frank Borman ate a steak-and-eggs breakfast and blasted off.

    Their mission: to find out if men could survive two weeks in space. If not, the Moon was out of reach.

    The endurance record complete, Lovell’s next flight was in command of Gemini 12 alongside space rookie, Buzz Aldrin.

    This time they proved that man could work outside a spacecraft. Aldrin clambered awkwardly into the void, spending five hours photographing star fields.

    Now for the Moon itself.

    The crew of Apollo 8 would be the first to travel beyond low Earth orbit and enter the gravitational pull of another celestial body.

    It was Nasa’s most dangerous mission yet.

    Earthrise

    The Saturn V rocket that shot Lovell, Borman and William Anders out of our atmosphere at 25,000 miles per hour was huge – three times larger than anything seen on the Gemini programme.

    As navigator, Lovell took with him a sextant to take star readings – in case the computers failed and they had to find their own way home.

    Sixty-eight hours after take-off, they made it.

    The engines fired and Apollo 8 slid silently behind the Moon. The men heard a cackle in their headsets as the radio signal to Mission Control faltered and then failed.

    The spellbound astronauts pinned themselves to the windows, the first humans to see the far side of our nearest celestial neighbour. And then, from over the advancing horizon, an incredible sight.

    “Earthrise,” gasped Borman.

    “Get the camera, quick,” said Lovell.

    Getty Images A photo of Earth taken during the spaceflightGetty Images

    The image of Earth from Space captivated the World

    It was Christmas Eve 1968.

    America was mired in Vietnam abroad and civil unrest at home. But at that moment, it seemed that humanity was united.

    The people of the world saw their planet as the astronauts saw it – fragile and beautiful – shining in the desolation of space.

    Lovell read from the Book of Genesis, the basis of many of the world’s great religions, to the people of the Earth.

    “And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.”

    For him, it was an image that changed our world forever. He put his thumb against the window and the whole world disappeared behind it. It was the most moving experience of his life.

    As the spacecraft re-emerged from the darkness, Lovell was first to announce the good news. “Please be advised,” he said as the radio crackled back into life, “there is a Santa Claus.”

    At that very moment, 239,000 miles away, a man in a blue Rolls-Royce pulled up outside Lovell’s house in Houston.

    He walked past the dozens of reporters camped outside and handed a box to Marilyn.

    She opened the star-patterned tissue paper and pulled out a mink jacket. “Happy Christmas,” said the card that came with it, “and love from the Man in the Moon.”

    Getty Images Lyndon Johnson watching the Apollo 8 mission on three televisions.Getty Images

    President Lyndon B Johnson, like millions of others, sat glued to his television sets during the Apollo 8 mission

    They went up as astronauts and came down celebrities. The people of the Earth had followed their every move on TV.

    There were ticker tape parades, congressional honours and a place on the cover of Time Magazine. And they hadn’t even set foot on the Moon.

    That honour went, of course, to Neil Armstrong and Buzz Aldrin.

    A year later, Kennedy’s dream was posthumously seen to fruition. A small step was taken and mankind took its giant leap. The New Nine had done their job.

    ‘Houston, we’ve had a problem’

    In April 1970, it was Jim Lovell’s turn. Fortunately, the crew of Apollo 13 did not believe in unlucky numbers.

    Lovell, Jack Swigert and Fred Haise were men of science – highly trained and determined to follow Armstrong and Aldrin to the lunar surface. But things went badly wrong.

    They were 200,000 miles above the Earth and closing in on their target when they spotted low pressure in a hydrogen tank. It needed a stir to stop the super cold gas settling into layers.

    Swigert flicked the switch. It should have been a routine procedure but the command module, Odyssey, shuddered. Oxygen pressure fell and power shut down.

    “I believe we’ve had a problem here,” said Swigert. Lovell had to repeat the message to a stunned Mission Control: “Houston, we’ve had a problem.”

    It was one of the greatest understatements of all time. The crew were in big trouble – a dramatic explosion had disabled their craft.

    Getty Images Flight controllers at Nasa working out how to get the crippled Apollo 13 back to Earth.Getty Images

    Flight controllers at Nasa working out how to get the crippled Apollo 13 back to Earth.

    Haise and Lovell worked frantically to boot up the lunar module, Aquarius.

    It was not supposed to be used until they got to the Moon. It had no heat shield, so could not be used to re-enter the Earth’s atmosphere. But it could keep them alive until they got there.

    The world stopped breathing and watched.

    For a second time, Jim Lovell had brought the world together as one. The first time it had been for Earthrise, the second would be to witness his fight to survive.

    “For four days,” said Marilyn, “I didn’t know if I was a wife or a widow.”

    Temperatures fell to freezing, food and water were rationed. It was days before they limped back to the fringes of Earth’s atmosphere. They climbed back aboard the Odyssey and prayed the heat shield had not been damaged.

    The radio silence that accompanies re-entry went on far longer than normal. Millions watched on TV, many convinced that all was lost.

    After six agonising minutes, Jack Swigert’s voice cut through the silence.

    The team on the ground held its breath until the parachutes deployed and the crew was safely down.

    The mission was Nasa’s greatest failure and, without question, its finest hour.

    Getty Images Apollo 13 astronauts waiting for rescue in a raft.  The space capsule is shown behind them and a helicopter is hovering overhead.Getty Images

    Jim Lovell, Fred Haise and Jack Swigert are rescued from the Pacific Ocean after their dramatic escape

    Lovell retired from the navy in 1973 and opted for a the quiet life, working for the Bay-Houston Towing Company, giving speeches and serving as president of the National Eagle Scout Association.

    His book, Lost Moon: The Perilous Voyage of Apollo 13, became the famous 1995 movie, starring Tom Hanks as Jim Lovell.

    For the film, the director asked him to dress up as an admiral. It was for a cameo scene, shaking hands with Hanks when the crew were rescued from the sea.

    But the old American hero wasn’t having it.

    Jim Lovell had been to the Moon twice, witnessed Earthrise and narrowly avoided a cold death in space – and saw no reason to falsely burnish his résumé.

    He took out his old navy uniform, dusted it down and put it on for the cameo appearance.

    “I retired as a captain,” he insisted, “and a captain I will be.”

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  • T. rex Was a Bone-Crusher, But Other Giant Dinosaurs Were Precision Slayers – SciTechDaily

    1. T. rex Was a Bone-Crusher, But Other Giant Dinosaurs Were Precision Slayers  SciTechDaily
    2. Crushing vs. Slashing: New skull scans reveal how giant dinosaurs killed  ScienceDaily
    3. Crushers to slashers: Dinosaur bite styles reveal evolution’s many paths  yahoo.com
    4. Bigger dinosaurs didn’t always have stronger bites, surprising new study finds  BBC Science Focus Magazine
    5. How giant dinosaurs turned their skulls into weapons  Earth.com

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  • How Greenland’s melting ice fuels ocean life

    How Greenland’s melting ice fuels ocean life

    As Greenland’s massive ice sheet continues to melt, it’s not just raising sea levels. The melting ice is also stirring up the ocean in ways that may be feeding tiny organisms at the base of the marine food chain.

    The study behind this discovery comes from a team of scientists at San José State University, working in partnership with NASA’s Jet Propulsion Laboratory and the Massachusetts Institute of Technology.


    Using powerful supercomputers and an advanced ocean simulation tool, the experts have shown how runoff from Greenland’s ice sheet may be helping phytoplankton thrive. These tiny, plantlike organisms are critical to life in the ocean – and to the planet’s climate.

    Melting ice is feeding the ocean

    Greenland’s ice sheet, which is over a mile thick in places, is losing around 293 billion tons of ice each year. In the summer, meltwater pours into the sea at astonishing rates.

    From the base of Jakobshavn Glacier (also known as Sermeq Kujalleq), more than 300,000 gallons of fresh water enter the ocean every second.

    This freshwater doesn’t just disappear. It creates a plume that rises up through the saltwater, and as it does, it appears to carry nutrients from deep in the ocean toward the surface.

    Scientists have long suspected that this upwelling may help feed phytoplankton, especially during the summer when surface nutrients run low.

    The role of phytoplankton

    Phytoplankton play a big role in Earth’s systems. They absorb carbon dioxide and form the base of the food web for everything from krill to whales. Despite being microscopic, they’re essential to marine ecosystems across the globe.

    NASA satellite data has shown a 57% increase in phytoplankton growth in the Arctic between 1998 and 2018.

    The timing of this growth spike led researchers to think glacial melt might be part of the reason. But proving it has been difficult, especially in Greenland’s remote, iceberg-filled fjords.

    A hidden ocean world

    Dustin Carroll is an oceanographer at San José State University who is also affiliated with NASA’s Jet Propulsion Laboratory in Southern California.

    “We were faced with this classic problem of trying to understand a system that is so remote and buried beneath ice,” said Carroll. “We needed a gem of a computer model to help.”

    The model came in the form of ECCO-Darwin, a tool developed at JPL and MIT. It’s been described as a virtual ocean laboratory.

    This tool pulls together decades of data – billions of measurements from satellites and ocean instruments – to simulate how water, heat, salt, nutrients, and life interact across the globe.

    Meltwater and phytoplankton growth

    Michael Wood, a computational oceanographer at San José State University, noted that simulating how biology, chemistry, and physics interact in just one corner of Greenland’s 27,000-mile coastline is an enormous mathematical challenge.

    Wood said that to break it down, they built a “model within a model within a model” to zoom in on the details of the fjord at the foot of the glacier.

    The calculations, run on NASA’s supercomputers in Silicon Valley, showed that glacial meltwater could increase summer phytoplankton growth by 15 to 40% in the fjord they studied.

    More ice, more impact

    It’s too soon to say exactly what this means for Greenland’s marine ecosystems, but it’s clear that changes in the ice are driving changes in the water.

    “Melt on the Greenland ice sheet is projected to accelerate in coming decades, affecting everything from sea level and land vegetation to the saltiness of coastal waters,” Carroll said.

    “We reconstructed what’s happening in one key system, but there’s more than 250 such glaciers around Greenland.” The team plans to expand their simulations to other coastal areas.

    Broader implications of the study

    The researchers also looked at how these changes affect the ocean’s ability to absorb carbon dioxide. In the fjord, meltwater makes the seawater less able to dissolve carbon.

    But that loss seems to be canceled out by the larger phytoplankton blooms, which take in more carbon dioxide from the atmosphere through photosynthesis.

    “We didn’t build these tools for one specific application,” said Wood. “Our approach is applicable to any region, from the Texas Gulf to Alaska. Like a Swiss Army knife, we can apply it to lots of different scenarios.”

    Image Credit: NASA’s Scientific Visualization Studio

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  • Get Ready to See Six Planets Line Up in the Upcoming Planet Parade

    Get Ready to See Six Planets Line Up in the Upcoming Planet Parade

    Fresh off the excitement of the Perseids meteor shower is a chance to see six planets lined up in the sky at once. These events, colloquially known as planet parades, only occur about once or twice a year, with the most recent one in February showing off all seven planets in our solar system at once. The next one will feature six of our closest celestial neighbors, and the event starts on Aug. 20. 

    The six planets sharing the sky will be Mercury, Venus, Jupiter, Saturn, Neptune and Uranus. Mars will technically be there at the beginning of the night, but it dips below the horizon right after sunset, so it won’t be visible when all of the others are. Of those, Mercury, Venus and Jupiter will be visible to the naked eye, while the others will require high-powered binoculars or, preferably, a telescope. 

    Even though they’re spread out across the eastern and southern skies, the planets pair up with this one, making many of them pretty easy to find if you know what to look for. From east to west, here’s where each one will be. 

    • Mercury – Eastern sky near the Cancer constellation. It’ll pop over the horizon just before sunrise, so you’ll have limited time to view it before the sun comes up and obfuscates it. 
    • Venus – At the lower tip of the Gemini constellation in the eastern sky, a couple of hours before sunrise. 
    • Jupiter – Will be near Venus, also in the Gemini constellation. It rises about an hour before Venus does. 
    • Uranus – Will be near the upper tip of Taurus, rising after midnight. This one will require some magnification. If you see Pleiades, a cluster of stars at the upper tip of Taurus, you’ve gone too far upward.
    • Saturn and Neptune – These two are right next to each other and will be sitting between the Pisces and Cetus constellations in the southern skies. Neptune will be closer to Pisces while Saturn will be closer to Cetus. 

    Since it takes a long time for planets to move through the night sky, Aug. 20 is the starting point, and it’ll run through the rest of the month. Once September hits, Mercury will be too close to the sun, which will obscure it. From that point, there will be a five-planet parade for a while until Venus sinks below the horizon in early October. So, in all, you’ll have a chance to see at least five planets for over a month. 

    Will the planet parade be visible from my region?

    Yes. We double checked Stellarium’s sky map from a variety of locations across the country, and everything above will be applicable everywhere in the continental US. Per Starwalk, the parade will also be visible in other parts of the world after the following dates for about the same amount of time (one to two weeks). 

    • Abu Dhabi – Aug. 9
    • Athens, Beijing, Berlin, Tokyo and London – Aug. 10
    • Mumbai and Hong Kong – Aug. 11
    • Reykjavik, São Paulo and Sydney – Aug. 12

    The planets will move based on date, though. The above locations are where they’ll be around Aug. 20, but if you’re looking a week or so later, they’ll be in the same general area, but will shift to a slightly different part of the sky. 

    Will I need any special equipment?

    Yes. Neptune and Uranus, especially, will require some sort of magnification to see. We recommend a telescope, but high-powered binoculars may work if the sky is dark enough. Saturn is also difficult to see without magnification, so you’ll want it for that too. Jupiter, Venus, and Mercury should be visible on their own with the naked eye. 

    We also recommend taking a trip out to the country, as light pollution from suburbs and cities can make it even more difficult to see Neptune and Uranus. The moon will be out as well, which may make Venus, Jupiter, and Mercury harder to see. Other factors like weather may also make it more difficult to see all of them. If you’re lucky, you may see a few shooting stars at the tail end of Perseids as well.


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  • Protein Misfolding Simulated in High Definition

    Protein Misfolding Simulated in High Definition

    UNIVERSITY PARK, Pa. — New computer simulations that model every atom of a protein as it folds into its final three-dimensional form support the existence of a recently identified type of protein misfolding. Proteins must fold into precise three-dimensional shapes — called their native state — to carry out their biological functions. When proteins misfold, they can lose function and, in some cases, contribute to disease. The newly spotted misfolding results in a change to a protein’s structure — either a loop that traps another section of the protein forms when it shouldn’t or doesn’t when it should — that disrupts its function and can persist in cells by evading the cell’s quality control system. The simulated misfolds also align closely with structural changes inferred from experiments that track protein folding using mass spectrometry, according to the team led by researchers at Penn State.

    “Protein misfolding can cause disease, including Alzheimer’s and Parkinson’s, and is thought to be one of the many factors that influence aging,” said Ed O’Brien, professor of chemistry in the Eberly College of Science, a co-hire of the Institute for Computational and Data Sciences at Penn State and the leader of the research team. “This research represents another step forward in our attempt to document and understand the mechanisms of protein misfolding. Our aim is to translate these fundamental discoveries into therapeutic targets that could help mitigate the impacts of these disorders and even aging.”

    A paper describing the research appeared today (Aug. 8) in the journal Science Advances.

    Proteins are composed of long strings of units called amino acids. A protein’s function relies on the sequence of those amino acids along the string, which determines how the string will fold into a three-dimensional structure. Sections of the protein can fold into helices, loops, sheets and various other structures which allows them to interact with other molecules and perform their functions. Any mistake during this folding process can disrupt these functions.

    The new class of misfolding, recently identified by the O’Brien Lab, involves a change in entanglement status in the protein’s structure. Entanglement refers to sections of the string of amino acids looping around each other like a lasso or a knot. Sometimes an entanglement can form when it shouldn’t be there and sometimes an entanglement that is part of the protein’s native structure doesn’t form when it should.

    “In our previous study, we used a coarser-grained simulation that only modeled the protein at the amino acid level not the atomic level,” said Quyen Vu, first author of the paper and a postdoctoral researcher in chemistry at Penn State who started the research as a graduate student at the Polish Academy of Sciences. “But there was concern in the community that such a model might not be realistic enough, as the chemical properties and bonding of the atoms that make up amino acids influence the folding process. So, we wanted to make sure we still saw this class of entanglement misfolding with higher-resolution simulations.”

    The team first used all-atom models of two small proteins and simulated their folding. They found that both small proteins could form the misfolds just like in their coarser-grained simulations. However, unlike in their previous simulations, which modeled normal-sized proteins, the misfolds in these small proteins lasted only a short time.

    “We think that the misfolds in our previous simulations persisted for two main reasons,” Vu said. “First, to fix the misfold required backtracking and unfolding several steps to correct to entanglement status, and second, the misfold can be buried deep inside the protein’s structure and essentially invisible to the cell’s quality control system. With the small proteins there were fewer steps and less to hide behind so the mistakes could be quickly fixed. So, we simulated a normal size protein at the atomic scale and saw misfolding that persisted.”

    The team also tracked folding of the proteins used in their simulations experimentally. While they couldn’t directly observe the misfolds in the experiments, structural changes inferred using mass spectrometry occurred in the locations that misfolded in their simulations.

    “Most misfolded proteins are quickly fixed or degraded in cells,” O’Brien said. “But this type of entanglement presents two major problems. They are difficult to fix as they can be very stable, and they can fly under the radar of the cell’s quality control systems. Coarse-grain simulations suggest that this type of misfolding is common. Learning more about the mechanism can help us understand its role in aging and disease and hopefully point to new therapeutic targets for drug development.”

    In addition to Vu and O’Brien, the research team includes Ian Sitarik, graduate student in chemistry; Yang Jiang, assistant research professor in chemistry; and Hyebin Song, assistant professor of statistics, at Penn State; Yingzi Xia, Piyoosh Sharma, Divya Yadav, and Stephen D. Fried at Johns Hopkins University; and Mai Suan Li at the Polish Academy of Sciences.

    The U.S. National Science Foundation, the U.S. National Institutes of Health and the Polish National Science Centre funded the research. The research was supported in part by the TASK Supercomputer Center in Gdansk, Poland; the PLGrid Infrastructure in Poland; and the Roar supercomputer in the Institute for Computational and Data Sciences at Penn State.

    /Public Release. This material from the originating organization/author(s) might be of the point-in-time nature, and edited for clarity, style and length. Mirage.News does not take institutional positions or sides, and all views, positions, and conclusions expressed herein are solely those of the author(s).View in full here.

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  • Apollo 13 astronaut Jim Lovell dies | US News

    Apollo 13 astronaut Jim Lovell dies | US News

    Retired astronaut and the commander of the famous Apollo 13 mission, Jim Lovell, has died aged 97.

    In a post on X, NASA said: “We are saddened by the passing of Jim Lovell, commander of Apollo 13 and a four-time spaceflight veteran.

    “Lovell’s life and work inspired millions. His courage under pressure helped forge our path to the Moon and beyond-a journey that continues today.”

    Image:
    File pic: AP

    Lovell helped turn the failed moon mission into a triumph after managing to get back to Earth safely after an oxygen tank explosion.

    NASA Administrator Sean Duffy said his the astronaut’s life and work “inspired millions of people across the decades”.

    “Jim’s character and steadfast courage helped our nation reach the moon and turned a potential tragedy into a success from which we learned an enormous amount,” he said. “We mourn his passing even as we celebrate his achievements.

    “From a pair of pioneering Gemini missions to the successes of Apollo, Jim helped our nation forge a historic path in space that carries us forward to upcoming Artemis missions to the moon and beyond.”

    This breaking news story is being updated and more details will be published shortly.

    Please refresh the page for the latest version.

    You can receive breaking news alerts on a smartphone or tablet via the Sky News app. You can also follow us on WhatsApp and subscribe to our YouTube channel to keep up with the latest news.

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  • Spacecraft headed to DART asteroid crash site images 2 faint space rocks to boost planetary defense tactics

    Spacecraft headed to DART asteroid crash site images 2 faint space rocks to boost planetary defense tactics

    The Hera mission to follow-up on the aftermath of NASA’s DART asteroid crash has caught sight of two other asteroids in an important test of its camera ahead of its rendezvous its main target: the double space rock system of Didymos and Dimorphos.

    In September of 2022, NASA’s Double Asteroid Redirection Test, or DART for short, slammed into the small asteroid Dimorphos, which orbits the larger Didymos, to demonstrate how potentially hazardous asteroids that could one day be on a collision course with Earth could be bumped off their trajectories so they miss our planet.

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  • Ocean Planet Exploration: MBARI Researchers Deploy New Imaging System To Study The Movement Of Deep-sea Octopus

    Ocean Planet Exploration: MBARI Researchers Deploy New Imaging System To Study The Movement Of Deep-sea Octopus

    MBARI’s innovative EyeRIS camera system collects near real-time three-dimensional visual data about the structure and biomechanics of marine life. Filming deep-sea pearl octopus (Muusoctopus robustus) with this system has provided new insight into octopus locomotion that can contribute to the design of bioinspired robots in the future. Image: © 2022 MBARI Credit © 2022 MBARI

    Editor’s note: When we start to mount Astrobiology missions to explore ocean worlds we’ll need ways for our robotic submersibles to observe and interat with whatever life forms they may encounter. We’re going to our droids to be as smart and self-reliant as possible. This team at MBARI is doing that here on Earth – right now – as they study our own planet’s oceanic depths and the various life forms they encounter – known and unknown.


    MBARI researchers have developed an innovative imaging system that can be deployed at great depths underwater to study the movement of marine life. The team used the system to study deep-sea octopus and shared their findings in the scientific journal Nature.

    EyeRIS (Remote Imaging System) can capture detailed three-dimensional visual data about the structures and movement of marine life in their natural deep-sea habitat. MBARI researchers integrated EyeRIS on board a remotely operated vehicle to observe deep-sea pearl octopus (Muusoctopus robustus) at the famous Octopus Garden offshore of Central California.

    “In MBARI’s Bioinspiration Lab, we look to nature to find inspiration for tackling fundamental engineering challenges,” said Principal Engineer Kakani Katija. “Octopuses are fascinating subjects as they have no bones yet are able to move across complex underwater terrain with ease. Until now, it has been difficult to study their biomechanics in the field, but EyeRIS is a game changer for us.”

    “EyeRIS allowed us to follow several individuals as they moved, completely unconstrained, in their natural environment,” said Senior Research Specialist Crissy Huffard. “Our team was able to get 3D measurements of their arms in real-time as they crawled over the rough terrain of the deep seafloor.”

    EyeRIS uses a specialized, high-resolution camera with a dense array of microlenses that collects simultaneous views of any object in its sight. Software uses that data to create imagery where every pixel in an image is in focus. EyeRIS can create a three-dimensional reconstruction of an animal’s movements so researchers can observe individual features in stunning detail. MBARI researchers used EyeRIS to track the movements of specific points on an octopus’s arm, identifying areas of curvature and strain in real time as the animal crawled over the rugged seafloor.

    Developed by MBARI’s Bioinspiration Lab, EyeRIS (right) enables near real-time three-dimensional imaging and visualization in a compact payload that can be deployed to depths of 4,000 meters (13,100 feet). Image: Joost Daniels © 2021 MBARI

    “EyeRIS data showed that pearl octopus use temporary muscular joints in their arms when crawling, with strain and bend concentrated above and below the joint. This allows them to have simple, but sophisticated, control of their arms,” said Huffard. “The mechanisms of this simplified control could be valuable for designing octopus-inspired robots and other bioinspired technologies in the future.”

    EyeRIS is the latest example of how technology can help us better understand ocean life. This versatile new imaging system can study marine animals that live on the seafloor and in the water column.

    “There is still so much to learn about marine life. EyeRIS will allow us to continue to study the movement and behavior of octopuses and other deep-sea animals in their natural environment using non-invasive techniques. I’m excited to see how this growing body of research and new technology sparks future bioinspired engineering innovation,” said Katija.

    The development of EyeRIS was made possible by the David and Lucile Packard Foundation and the Gordon and Betty Moore Foundation.

    About MBARI

    MBARI (Monterey Bay Aquarium Research Institute) is a non-profit oceanographic research center founded in 1987 by the late Silicon Valley innovator and philanthropist David Packard. Our mission is to advance marine science and engineering to understand our changing ocean. Learn more at mbari.org.

    In situ light-field imaging of octopus locomotion reveals simplified control, Nature

    Astrobiology, Oceanography, robotics,

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  • Heaviest Black Hole Ever Found Pushes Limit of What’s Cosmologically Possible

    Heaviest Black Hole Ever Found Pushes Limit of What’s Cosmologically Possible

    The largest black hole ever detected is 36 billion times the mass of our Sun. It exists near the upper limit predicted by our cosmological models, leaving astronomers with burning questions surrounding the relationship between black holes and their galaxy hosts. 

    In a paper published August 7 in Monthly Notices of the Royal Astronomical Society, researchers announced the discovery of a black hole inside a supermassive galaxy 5 billion light-years from Earth, dubbed the Cosmic Horseshoe. The newly spotted monster is roughly 10,000 times heavier than the supermassive black hole at the Milky Way’s core, according to a statement. Theoretical predictions set the upper bound of a black hole’s mass at 40 to 50 billion times that of the Sun; this cosmic behemoth stands at 36 billion times the Sun’s mass, so it comes precariously close to what calculations allow.

    The Cosmic Horseshoe’s enormous size visibly warps spacetime, bending the light from nearby galaxies into a horseshoe-shaped glare called an Einstein Ring. This fortuitous celestial quirk, along with more traditional detection methods, allowed astronomers to spot the new black hole, which has yet to be named.

    “This is amongst the top 10 most massive black holes ever discovered, and quite possibly the most massive,” Thomas Collett, study co-author and a cosmologist at the University of Portsmouth in England, said in the statement. “Most of the other black hole mass measurements are indirect and have quite large uncertainties, so we really don’t know for sure which is biggest.” 

    Most large galaxies appear to host supermassive black holes at their core, including the Milky Way. Cosmological models predicted that bigger galaxies, like the Cosmic Horseshoe, might be capable of hosting even larger, “ultramassive” black holes. However, such ultramassive black holes were difficult to spot, as the conventional method of tracking the motion of stars around them—stellar kinematics—wasn’t effective for dormant, faraway black holes. 

    The researchers overcame this limitation with gravitational lensing, a method that doesn’t depend on necessarily “seeing” the motion of cosmic entities. They also took observational data from the Very Large Telescope and the Hubble Space Telescope to create a comprehensive model of the galaxy. This two-pronged approach allowed the team to spot a “dormant” black hole “purely on its immense gravitational pull and the effect it has on its surroundings,” explained Carlos Melo, study lead author and PhD student at the Universidade Federal do Rio Grande do Sul in Brazil, in the same statement.

    Another image of the Cosmic Horseshoe, but with the pair of images of a second background source highlighted. The faint central image forms close to the black hole, which is what made the new discovery possible. Credit: NASA/ESA/Tian Li (University of Portsmouth)

    “We detected the effect of the black hole in two ways,” Collett said. “It is altering the path that light takes as it travels past the black hole, and it is causing the stars in the inner regions of its host galaxy to move extremely quickly. By combining these two measurements, we can be completely confident that the black hole is real.”

    “What is particularly exciting is that this method allows us to detect and measure the mass of these hidden ultramassive black holes across the universe,” Melos added, “even when they are completely silent.”

    Another notable aspect of the Cosmic Horseshoe’s environment is that it’s a “fossil group.” These dark, massive systems are primarily driven by gravitational forces and usually come as the final product of a series of galaxy mergers.

    “It is likely that all of the supermassive black holes that were originally in the companion galaxies have also now merged to form the ultramassive black hole that we have detected,” said Collett. “So we’re seeing the end state of galaxy formation and the end state of black hole formation.”

    The new black hole is clearly impressive, and it’ll be exciting to see what else astronomers discover about it. It’s also a fantastic demonstration of multi-messenger astronomy—the coordination of different signal types from the same astronomical event. This has been essential in redefining phenomena that we supposedly “finished” studying, but it’s promising to see it support entirely new discoveries. Either way, there’s no doubt that we’re inching closer than ever to the core of our universe’s many mysteries.

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  • Diabolical mites kill record numbers of honeybees | Good Food

    Diabolical mites kill record numbers of honeybees | Good Food

    You’ve probably heard about colony collapse disorder and the many problems facing our bee population. These issues have persisted for nearly a decade but this winter was particularly disastrous for US beekeepers. Between June 2024, and January 2025, 62% of commercial honeybee colonies in the United States died. That’s the largest die off on record, and it comes on the heels of a 55% die-off the previous winter. What’s going on? 

    We decided to ask Adam Novicki, an agriculture supervisor at the University of California’s Agriculture and Natural Resources Department. He works at the Hansen Agricultural Research and Extension Center in Camarillo. He was also, for a few years, a hobbyist beekeeper

    Evan Kleiman: So let’s talk about this past winter and what happened. Why did so many hives have so much die-off? There appears to be a number one culprit, right? 

    Adam Novicki: I wish it was a single smoking gun, but it’s not. The Varroa destructor is the scientific name of the varroa mite, and that mite is not from the US. It came to America, the United States, in the early 90s, and it originally was from eastern Russia, and it coexisted with another bee called Apis cerana. There’s many different bee species, and Apis mellifera is the one that we know in the West. 

    Long story short is the Apis cerana had evolved with that mite, and one of the things is being very vigilant about keeping them off of other bees. It’s called grooming or hygienic. Unfortunately, the Western honeybee didn’t evolve with that so that mite was able to start to infiltrate and really take advantage of bees. And there’s a number of primary consequences. It’s a vector for many viruses that affect bees, the main one is called deformed wing virus. Basically, when you have bees being compromised their immune systems, like you and I, if we get sick. It’s like when COVID was happening, people with a compromised immune system were in greater danger of perishing. Same thing with the bees. When they start to get compromised, they can’t fight off just chilly weather or other things that might be affecting them, and then the hive suffers.

    How does the varroa mite operate?

    That’s a very good question. There are two stages. One is a really fancy word called phoretic, which really means running around, and those are mites that a beekeeper would see when they open the hive. And those mites are often either just running around, or they are attached to an adult bee, and they’re feeding on that bee and they feed off what the bee blood is, what we call hemolymph, and they feed off that, kind of like a tick. That’s how we see them. But how they reproduce is very diabolical. The female mites will hang around the brood chamber. And a modern hive that you see a white box in a field has 10 frames inside of it. But if you imagine three dimensionally, like a football, lying on its side in that box, then taking up that space, that is the brood chamber. So those mites, those female mites, hang around that area, and they go into the cells where eggs have been laid. And as that egg develops into a larva, they begin laying eggs of their own, which can develop very quickly.  So what they’ve done is they’re feeding off this larva, and they are passing that viral load into that larva. So it doesn’t kill the larva. It just diminishes its prospects. So when it’s born, it often has obvious signs of virus, deformed wing or paralysis, and those bees aren’t going to go anywhere. If you have a deformed wing, you can’t fly, so those bees will eventually die. But what’s even worse is the one that you see attached to the adult bees, those are still passing on the viral load too, but that’s called an asymptomatic transfer, and that, in and of itself, can also cause the bee to get sick.

    Adam Novicki, an agriculture supervisor and former beekeeper, attributes the drastic bee die-off to the varroa mite. Photo by Therese McLaughlin.

    And in a quest to fight off the mites, do bees sacrifice their own larva?

    Correct. Bees have very good hearing, through their antenna, their sensory apparatus. So the development of a bee is interesting, I can tell you very quickly, it takes 21 days to form a typical worker bee. Now a drone bee, which is a male bee that only goes out and mates with other new queens, those take 24 days. Well, these mites will go into those cells, like I mentioned, and they’re developing. They love to go into drone cells, because they’re big, fatter bees that take longer. So you know, it’s like having a buffet open longer. But let’s stick with the worker bees. 

    They go in right before that cell is capped. And as I mentioned, it takes 21 days. So you have an egg. For three days. It’s just an egg, then it develops into a larva, and about day 10, the bees cap it, and that allows the bee to build a cocoon and metamorphosize into an adult bee, which then is hatched by itself at 21 days. Now, without getting too complicated, that in and of itself, once they capped it, the other worker bees will sense that there’s something wrong with that cell, and they will open it, and they will destroy it. They’ll pull that larva out and throw it out of the hive. Now if that keeps happening over and over again, then, you know, bees only live 42 days, so your normal population is dying off. And if you are sacrificing your newbies, then your population is going to start to plummet.

    And once that starts to happen, once a hive reaches a tipping point where the mites can tell that the population is unsustainable, that it’s going to collapse, do they stay and collapse along with the bees, or do they hitch a ride out?

    You know, that’s a very good question. What happens is, and this is, again, sort of cruel fate, Apis mellifera, the race of bee that is most popular for honey production is the Italian honey bee, and it’s still Apis mellifera, but it’s called ligustica, is its subspecies. Long story short, is that particular race of bees is very good at producing honey, but also very good at stealing honey. So other hives, starting with the ones next to it, will notice that that hive is weak. So what are they going to do? They’re going to go into that hive and start stealing all the honey that happens to be left over. And if the hive was strong before, it might have quite a bit of honey. So when they go in to steal the honey, the mites that are on the bees, the remember, the phoretic ones, are running around, they’re going to jump onto the other bees. And those bees will then leave and go back to their own hive, and the life cycle will begin again.

    Can you briefly give us an idea of how huge this problem is?

    Well, there are 1.6 million acres of almonds [in California]. Of that, 1.2 are what they call bearing. The University of California has determined that the optimum number of hives per acre is two. You need 2.4 million hives to adequately pollinate the almonds. Each hive will have minimum of 12,000 bees in each hive, but ideally more. And remember that loss happened in January, and we pollinate February to March. So if you lost 60% of your hives, there were not enough bees to pollinate the crop.

    So in addition to the varroa mite, honeybees are facing two other major problems. The second issue is pesticide exposure, especially neonics. Can you tell us about that?

    The biggest problem with neonics is that, for instance, they’re using corn. Bees don’t pollinate corn, but they sometimes feed off the water that corn sweats. Neonics poison bees in a sub lethal way, and what that means is the bees can’t find their way home, and if they don’t find their way home, then the population is going to suffer.

    So this is fascinating to me. So first, explain what corn sweat is. I’ve seen pictures of it actually on social media. It’s startling.

    Every plant has evapotranspiration, and corn is a grass, and it’s a major crop in North Dakota, where all the bees are for honey production. And when it’s humid and hot, it will sweat all the water it’s taking up from the ground, it’s putting out through its leaves. And as I mentioned, bees don’t pollinate corn. However, they need water. If they’re flying over and they stop, they will grab that sweat, those drops of water that can have traces of neonicotinoids in the bees. And the challenge is that it’s what they call a sublethal dose, so the bees don’t even find a way back for us to determine that indeed what killed them, which offers the chemical company a very convenient defense.

    As you’ve pointed out, beehive die-off is caused by a host of interconnected factors, which isn’t surprising. All of Earth’s nature is just interconnected. Can you talk about how these three big issues, mites, pesticides, and also a decreasing lack of forage are all interconnected, and how they layer on top of each other?

    Again, let’s go back to North Dakota. It’s the number one producing state of honey in America. So when you’re in North Dakota, they have a lot of clover. That’s why, when you see clover honey, it’s generally from North Dakota or South Dakota. Here’s the catch. It used to be they would have marginal land that could not be farmed, and those farmers then would, say it’s 10% of the acreage. Well, that’s great for the bees, because if you have soybean or corn or wheat, they’re not going to go there. But they’ve got plenty of flowers. Well, the technology has caught up where now they can farm marginal land. So because farmers have very tight margins too, they and if anyone can do that, they will. Now the term they use in North Dakota is “ditch to ditch,” meaning there’s drainage ditches. And so now you’re farming nearly 100% of your land. So it really hurt the forage, which means all the flowers. And if you don’t have enough, you’re in really bad shape for the bees, because bees need multiple kinds of sugar and multiple kinds of pollen. The pollen is the protein, the carbohydrate is the nectar. So they need a variety. It’s like if you and I just had a Cliff Bar and 7-Up, you know, I mean, we’d have our protein and we’d have our carbohydrate, but we wouldn’t be very good if that’s all we, you know, wouldn’t be good for you and I.


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