Science

Webb’s latest image of the Helix Nebula reveals a dramatic close-up of a dying star shedding its outer layers. The detailed view highlights glowing knots of gas shaped by fast-moving stellar winds colliding with older material. Changes in color trace a shift from scorching hot gas near the center to cooler regions farther out. The scene captures how stellar death helps supply the building blocks for future worlds.

Researchers have demonstrated that quantum entanglement can link atoms across space to improve measurement accuracy. By splitting an entangled group of atoms into separate clouds, they were able to measure electromagnetic fields more precisely than before. The technique takes advantage of quantum connections acting at a distance. It could enhance tools such as atomic clocks and gravity sensors.

Researchers have demonstrated that quantum entanglement can link atoms across space to improve measurement accuracy. By splitting an entangled group of atoms into separate clouds, they were able to measure electromagnetic fields more precisely than before. The technique takes advantage of quantum connections acting at a distance. It could enhance tools such as atomic clocks and gravity sensors.

Solar geoengineering could halve the economic cost of climate change, but stopping it would cause temperatures to rebound sharply, leading to greater damage than unabated global warming

Columnist Helen Thomson investigates the neurological benefits of saunas, and how heat therapy can have anti-inflammatory effects throughout the body

Despite its small size, Mars seems to have a huge impact on the orbital cycles that govern Earth’s climate, especially those that cause ice ages

The Circinus Galaxy, a galaxy about 13 million light-years away, contains an active supermassive black hole that continues to influence its evolution. The largest source of infrared light from the region closest to the black hole itself was thought to be outflows, or streams of superheated matter that fire outward.

We’re not going to have a political discussion today, which can apparently lead to a website version of a fractious Thanksgiving dinner involving a family with sharply different political views. Instead, marvel here at the courage of two aged Japanese ladies, whose job is to catch deadly sea snakes—to make soup. It’s shown in the four-minute BBC video below.

Now all banded sea snakes are highly toxic, and are the kraits (genus Bungarus). Although bitten victims can be treated with antivenom, mortality from some species can be as high as 80% in untreated victims (age of victim and time until treatment begins are crucial). The venoms are neurotoxic and the symptoms are dire.

The snakes being hunted in this video, are probably the black-banded sea krait (Laticauda semifasciata), and they’re caught for food. From Wikipedia:

Black-banded sea krait venom is reportedly ten times stronger than that of a cobra; however, as with the vast majority of venomous snake species, the black-banded sea krait generally does not aggressively strike at humans unless it is cornered or threatened (or otherwise maliciously provoked), preferring to conserve its energy and venom supplies for hunting purposes, reacting defensively only as a very last resort.

Despite its potent venom, which is concentrated in the snake’s venom glands (behind the eyes), the meat of the erabu snake is a winter staple food in southern Japan, where it is believed to replenish a female’s womanhood or increase fertility. Irabu soup, or irabu-jiru (ja:イラブー汁), is said to taste like miso and a bit like tuna. This dish was a favorite of the royal court of the Ryukyu Kingdom; it is thought to have analeptic properties.

During certain warm years, the sea snakes are drawn en masse to the sea caves and tide pools of the coastal Ryukyu cliffs, in search of fresh water to drink and possibly to mate. It is in these cryptic spots where, by cover of darkness (and usually guided only by lantern light), elderly women—who are the most experienced at preparing irabu-jiru—explore the dangerous caverns in pursuit of black-banded sea kraits, which the ladies catch with their bare hands. Some areas may contain hundreds of the snakes, some engaged in active breeding balls, yet the women hike through the caves barefoot or with minimal protective gear. As with the handling of any venomous snake species, the sea snakes are grabbed quickly behind the head, as to avoid any potential envenomation. They are placed in a cloth bag, alive, and later quickly dispatched and prepared in a simple broth with kombu or other edible kelp, and possibly a bit of pork.

Look how they handle these snakes! Bare-handed, and no real protection.  Would you do this?

A massive new study comparing more than 100,000 people with today’s most advanced AI systems delivers a surprising result: generative AI can now beat the average human on certain creativity tests. Models like GPT-4 showed strong performance on tasks designed to measure original thinking and idea generation, sometimes outperforming typical human responses. But there’s a clear ceiling. The most creative humans — especially the top 10% — still leave AI well behind, particularly on richer creative work like poetry and storytelling.

Researchers have developed a technique that allows them to carve complex three dimensional nanodevices directly from single crystals. To demonstrate its power, they sculpted microscopic helices from a magnetic material and found that the structures behave like switchable diodes. Electric current prefers one direction, but the effect can be flipped by changing the magnetization or the twist of the helix. The findings show that geometry itself can be used as a tool for electronic design.

NASA is moving into a new phase of space exploration, with major progress across human spaceflight, science missions, and advanced technology. In just one year, the agency has launched multiple crewed and science missions, test-flown new aircraft, and pushed forward plans for the Moon, Mars, and beyond. With Artemis II set to send astronauts around the Moon for the first time in more than 50 years, NASA is laying the groundwork not just for a return to the lunar surface, but for a sustained human presence in deep space.

Falling space junk is becoming a real-world hazard, and scientists have found a clever new way to track it using instruments already listening to the Earth itself. By tapping into networks of earthquake sensors, researchers can follow the sonic booms created when space debris tears through the atmosphere, revealing where it traveled, broke apart, and possibly hit the ground.

A distant Sun-like star suddenly went dark for months, stunning astronomers who quickly realized something massive was passing in front of it. Observations revealed a gigantic disk of gas and dust filled with vaporized metals, swirling around an unseen companion object. For the first time, scientists directly measured the motion of these metallic winds inside such a disk. The findings suggest that even ancient star systems can still experience catastrophic planetary smashups.

As I’m occupied with another writing assignment, and because I’m trying to take a wee break from writing about news, as it’s so depressing, I’ll proffer this post to readers who want to weigh in on Minnesota.

As I’ve said before, I haven’t formed firm opinions about a lot of aspects of the ICE/military presence there and the clashes with protestors, and that’s because it’s hard to do so when you’re not on the ground seeing what happens in the street. Each side has its own videos and own interpretations, and it’s hard to figure out what is real and what is propaganda. It is clear that ICE has acted in a heavy-handed manner, that Trump is trying to punish that blue state, but it’s also hard to judge whether some ICE actions are defensible. Further, it’s clear that some of the protestors are, like Martin Luther King, Jr.in the Sixties, trying to provoke violence by the authorities as it helps their cause. That is civil disobedience, but for ICE the morality of the protestors’ cause is (to me) not nearly as clear as it was for the civil rights protests.  I do not favor open borders, but it seems like many of the protestors—like many Democrats in general—do.

At any rate, that’s all the opinions I have now, and they are subject to change. (I haven’t weighed in on what happened to Renée Good, except that there needs to be an objective and thorough investigation by both the federal government and Minnesota, with sharing of information by both). If ICE officers look like they committed crimes, they should go through the judicial process.

So, here are some questions to discuss, but feel free to say what you think about the situation in general. Remember, be civil and don’t jump down my throat for raising this issue.

a.) How heavy-handed is ICE acting relative to how they should be acting?  Should they even be there?
b.) It’s likely that the National Guard and the U.S. military will be employed if the protests continue. Is this justifiable? If so, is it proper for Trump to invoke the Insurrection Act?
c.) Is the violence being exacerbated by the protestors, or is it solely the result of ICE?
d.) Do you think the protestors really want no enforcement of immigration laws, i.e., open borders? Would that apply to every immigrant, including the criminals so loudly touted by Kristi Noem?
e.) Are governor Walz and Minneapolis mayor Jacob Frey exacerbating the situation? Are they correct in calling for ICE to leave Minnesota?
f.) If you were President, how would you handle the situation?

. . . and so on.

Scientists are finding new ways to replace expensive, scarce platinum catalysts with something far more abundant: tungsten carbide. By carefully controlling how tungsten carbide’s atoms are arranged at extremely high temperatures, researchers discovered a specific form that can rival platinum in key chemical reactions, including turning carbon dioxide into useful fuels and chemicals. Even more promising, the same material proved dramatically better at breaking down plastic waste, outperforming platinum by more than tenfold.

A groundbreaking new radio image reveals the Milky Way in more detail than ever before, using low-frequency radio “colors” to map the galaxy’s hidden structures. The image is sharper, deeper, and wider than anything previously released, uncovering both star-forming regions and the remains of ancient stellar explosions. Scientists can now better distinguish where stars are being born versus where they’ve met dramatic ends. The discovery opens powerful new ways to study the life cycle of stars and the shape of our galaxy.

Astronomers have spotted a rare, rule-breaking quasar in the early Universe that appears to be growing its central black hole at an astonishing pace. Observations show the black hole is devouring matter far faster than theory says it should—about 13 times the usual “speed limit”—while simultaneously blasting out bright X-rays and launching a powerful radio jet. This surprising combination wasn’t supposed to happen, according to many models, and suggests scientists may be catching the black hole during a brief, unstable growth spurt.

We live near a fusion reactor in space that provides all our heat and light. That reactor is also responsible for the creation of various elements heavier than hydrogen, and that's true of all stars. So, how do we know that stars are element generators?

The earliest galaxies in the universe earned the nickname "monster galaxies" for good reason, they formed stars at rates hundreds of times faster than the Milky Way, growing rapidly after the dawn of time. Astronomers using ALMA and the James Webb Space Telescope have now revealed that three such monsters each achieved their extraordinary growth through completely different mechanisms. By comparing where stars are forming today with where they formed in the past, researchers discovered that galaxy collisions, internal instability, and minor mergers can all trigger these growth spurts, fundamentally changing our understanding of how the universe's most massive galaxies came to be.

Gravitational lensing is a powerful tool that brings impossibly distant galaxies into reach. The JWST uses galaxy clusters and their overpowering to magnify background galaxies that are otherwise beyond our observational capabilities. One cluster, named MACS J1149.5+2223, is 5 billion light-years away and holds at least 300 galaxies, probably many more. It's been chosen as the JWST's Picture Of The Month.