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Follow the water: Searching for a lunar oasis

Space and time from Science Daily Feed - Tue, 01/28/2025 - 9:43am
As humankind imagines living off-planet -- on the moon, Mars and beyond -- the question of how to sustain life revolves around the physical necessities of oxygen, food and water. We know there is water on the moon, but how do we find it? Researchers may help bring science fiction to reality by providing a divining rod to guide future space missions.
Categories: Science

Testing the effect of thousands of compounds on cellular metabolism

Matter and energy from Science Daily Feed - Tue, 01/28/2025 - 9:43am
Researchers are able to test in parallel the effects of over 1500 active substances on cell metabolism. Their analysis also led to the discovery of previously unknown mechanisms for known medications. This approach might help scientists to better predict side effects and find additional uses for commercially available pharmaceuticals.
Categories: Science

Towards a new generation of human-inspired language models

Computers and Math from Science Daily Feed - Tue, 01/28/2025 - 9:43am
Can a computer learn a language the way a child does? A recent study sheds new light on this question. The researchers advocate for a fundamental revision of how artificial intelligence acquires and processes language.
Categories: Science

A super-Earth laboratory for searching life elsewhere in the Universe

Space and time from Science Daily Feed - Tue, 01/28/2025 - 9:42am
Thirty years after the discovery of the first exoplanet, we detected more than 7000 of them in our Galaxy. But there are still billions more to be discovered! At the same time, exoplanetologists have begun to take an interest in their characteristics, with the aim of finding life elsewhere in the Universe. This is the background to the discovery of super-Earth HD 20794 d by an international team. The new planet lies in an eccentric orbit, so that it oscillates in and out of its star's habitable zone. This discovery is the fruit of 20 years of observations using the best telescopes in the world.
Categories: Science

Researchers propose novel approaches for improved microgrid management

Matter and energy from Science Daily Feed - Tue, 01/28/2025 - 9:40am
Scientists have developed a new optimization model to improve microgrid operation. This model adapts to unexpected changes in power supply and demand, ensuring stable and efficient energy systems. By addressing challenges like power outages and varying energy needs, this approach enhances the reliability and sustainability of microgrids, making it suitable for real-world use in areas with unstable power grids.
Categories: Science

Structural color shields: Water repellent coatings

Matter and energy from Science Daily Feed - Tue, 01/28/2025 - 9:40am
In a step towards developing advanced materials for functional coatings, a research group has developed a technology that combines structural color coating with super water-repellent properties. The structural color coating does not fade away like the conventional paints and exhibits self-cleaning properties. This was achieved by using hydrophobic melanin particles which provide structural color and water-repellence. The discovery marks a breakthrough in advanced materials for paints and coatings.
Categories: Science

Plant-based substitute for fossil fuels developed for plastic foams

Matter and energy from Science Daily Feed - Tue, 01/28/2025 - 9:39am
An environmentally-friendly preparation of plant material from pine could serve as a substitute for petroleum-based chemicals in polyurethane foams. The innovation could lead to more environmentally friendly versions of foams used ubiquitously in products such as kitchen sponges, foam cushions, coatings, adhesives, packaging and insulation. The global market for polyurethane totaled more than $75 billion in 2022.
Categories: Science

Innovative one-minute video game boasts 80% success rate in diagnosing autism

Computers and Math from Science Daily Feed - Tue, 01/28/2025 - 9:38am
A new one-minute video game is able to accurately and efficiently identify children with autism from those who have ADHD or are neurotypical.
Categories: Science

How simple prompts can make partially automated cars safer

Matter and energy from Science Daily Feed - Tue, 01/28/2025 - 9:38am
A new study finds that prompts do a good job of getting drivers to engage with their environment and take over control of the vehicle when necessary while using partially automated driving systems -- with one exception. If drivers are deeply distracted, these system-generated prompts have little or no effect.
Categories: Science

How simple prompts can make partially automated cars safer

Computers and Math from Science Daily Feed - Tue, 01/28/2025 - 9:38am
A new study finds that prompts do a good job of getting drivers to engage with their environment and take over control of the vehicle when necessary while using partially automated driving systems -- with one exception. If drivers are deeply distracted, these system-generated prompts have little or no effect.
Categories: Science

Novel lab-on-chip platform promises to expedite cancer diagnoses

Computers and Math from Science Daily Feed - Tue, 01/28/2025 - 9:36am
Researchers propose a novel system that uses standing surface acoustic waves to separate circulating tumor cells from red blood cells with unprecedented precision and efficiency. The platform integrates advanced computational modeling, experimental analysis, and artificial intelligence algorithms to analyze complex acoustofluidic phenomena. The researchers included an innovative use of dualized pressure acoustic fields and strategically located them at critical channel geometry positions on a lithium niobate substrate. By means of acoustic pressure applied within the microchannel, the system design provides for the generation of reliable datasets.
Categories: Science

Explaining persistent hydrogen in Mars' atmosphere

Space and time from Science Daily Feed - Tue, 01/28/2025 - 9:36am
The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for decades. Now, researchers think they have a good explanation for a warmer, wetter ancient Mars. Building on prior theories describing the Mars of yore as a hot again, cold again place, a team has determined the chemical mechanisms by which ancient Mars was able to sustain enough warmth in its early days to host water, and possibly life.
Categories: Science

A new kind of hidden black hole may explain the mystery of dark energy

New Scientist Feed - Tue, 01/28/2025 - 8:34am
Space-time may hide a bizarre new kind of black hole that causes Einstein’s theory of gravity to fail – and could solve the mystery of dark energy
Categories: Science

Mice born with two fathers - but don't expect the same for people

New Scientist Feed - Tue, 01/28/2025 - 8:00am
For the first time that we know of, mice with two fathers have survived to adulthood, but the methods used would be "unthinkable" to try in people
Categories: Science

Trying to reconcile indigenous ways of knowing with “white” ways of being in New Zealand

Why Evolution is True Feed - Tue, 01/28/2025 - 8:00am

This article actually appeared on the Museum of New Zealand’s website, and is about as explicit an argument for the country adopting indigenous “ways of knowing” (Mātauranga Māori, or MM) as I have found. You may remember that MM is a mixture of practical knowledge, religion, superstition, morals, teleology and guidelines for living.  Despite this mixture, there has been a constant battle to get MM taught as coequal with modern science, though the argument has euphemistically changed to coequal “ways of knowing.”  The “coequal” bit derives from a slanted interpretation of the 1840 Treaty of Waitangi (the sacred “Te Tiriti” that you encounter in all of this literature), a treaty that said nothing about schools teaching equal amounts of Māori or “Western” knowledge. But that’s how it’s interpreted, for Māori see coequal teaching as a way to retain power in their society.

The problem is that MM is not a “way of knowing” in any scientific sense, for it lacks explicit tools for finding out truths about the universe. Any “way of knowing” that relies on superstition and legends cannot possibly be coequal with modern science, though it can be usefully taught in sociology or anthropology classes.  In the article below (click to read) several white women (“Pākehā “, meaning a New Zealander of European descent) and one Māori woman discuss how they can create a teaching site that centers MM.

The conclusion: white “ways of being” are not good ways to teach Māori “ways of knowing.” In other words, only Māori should control the teaching of MM and, further, the Pākehā corrupted their society and distorted their ways of knowing (the piece is imbued with victimology).  When you read it, you may well come to the conclusion that my NZ correspondent did when he/she sent me this piece:

This blog from our national Museum is a good example of the extent to which Critical Social Justice Ideology has deranged our institutions:

Click below to read:

The aim:

Two wāhine from different backgrounds reflect on their growth developing Ko Au Te Taiao, an online learning resource that seeks to centre mātauranga Māori values. As Mero Rokx and Sarah Hopkinson worked through the complexities of this project, they discovered much more about themselves and their relationships to each other, place, and the cosmos. In this article, the co-authors consider ways of working together that enable authenticity and provide reflective questions for other practitioners embarking on similar kaupapa [policies or proposals].

Rokx is Māori and Hopkinson Pakeha, here is the photo they provide with caption. Rokz sports a chin tattoo, something that is not rare in Māori women but I thought I should explain to readers who haven’t seen them.

The authors begin with a long recitation of their backgrounds. The piece is heavily larded with Māori words, but fortunately most of them can be translated (not always accurately) with a click on the website.

The Treaty is of course of central importance here, for you can’t teach MM without mentioning Te Tiriti as the rationale:

Ko Au Te Taiao centres Te Tiriti o Waitangi and aims to support the broadening of perspectives among teachers and learners throughout Aotearoa [New Zealand]. It is an online resource providing teaching and learning activities for connecting with te taiao. It is far from perfect, but in the attempt, a great deal of lessons have been learnt.

In creating Ko Au Te Taiao, we have discovered more about ourselves, our relationships to te taiao and the work we do at Te Papa. The collaborative and organic nature of its design has resulted in the development of a taonga that carries the mauri of all those that contributed, it is living evidence of the process becoming the outcome.

“Mauri” is the teleological Māori term for “vital essence,” and in indigenous ways of knowing it is explicitly teleological, with everything having a vital essence of life force. This emphasis on mauri, though ok here, is one thing that makes MM unsuitable for being taught as equivalent to modern science.  Nor can MM really be a “way of knowing” since there is no evidence for a “mauri” in science.

There is a lot of this kind of stuff from the authors. Mero says this, among other things:

One of the beautiful things about whakataukī is the way that they expose perspectives through interpretation. Ko au te taiao, ko te taiao ko au is much deeper than the expression ‘I am nature’.

Ko au – I am.

I am the legacy of my ancestors – tūpuna who go as far back as the beginning of time, and beyond. I am Papatūānuku, I am Ranginui, and I am everything that exists between them. The innate philosophy that I have of being a descendant of the earth, the stars, and the sky is what ko au te taiao, ko te taiao ko au means to me.

Ko au – I am.

I am a mother, he ūkaipō. I reflect on my role as a mother, and the inherent obligation of continuing the legacy passed down to me. I feed my offspring into the night, such as the expression ‘he ū-kai-pō’, both fuel to physically grow, and knowledge to understand the responsibilities that they will inherit as being descendants of Ranginui and Papatūānuku.

And Sarah says this:

Ko Sarah Hopkinson tōku ingoa. My ancestors came from England, Wales, and Norway. I grew up at the ankles of Taranaki on Ngāti Ruanui and Te Atiawa whenua. I am a māmā, a strategy creator, a curriculum designer, an urban farmer, a storyteller, and earth dreamer. I have been working alongside Te Papa Learning to develop online resources that connect schools across the motu with Collections Online. Mero and I have co-developed Ko Au Te Taiao , the latest resource from Te Papa Learning.

With that self-identification out of the way, they reflect on why MM simply cannot be taught in a “white” framework, whatever that is.

There has been momentum in recent years, through both the Ministry and NZQA, to recognise the equal status of mātauranga Māori in schools. It is a lofty ambition, and one that deserves attention. But it comes with considerable challenges, not least of which is that almost 75% of teachers in schools are Pākehā, and mātauranga Māori belongs with hapū, iwi, and those who whakapapa Māori. There is a tension and challenge between these two truths.

Note first that MM and (presumably) modern science are considered “two truths”. But MM is in no sense a monolithic “truth”!  Note too the “equal status” to be recognized for MM. But equal to what? Clearly it must be an “equal status as a way of knowing”, and that really means science. But the paragraph also implies that MM cannot be properly taught by white people, or in a framework of white methods of acquiring knowledge and teaching about it. This is a clever strategy, because it prevents students from being exposed to MM and modern science by the same teachers. It is a way to gain power.

And Sarah comes precisely to that conclusion. I started out bolding bits of this, but I bolded nearly the whole thing. So I’ll go ahead and do it, as this is the heart of the piece, and here is its main conclusions:

Through the process, I have learnt that:

  • Mātauranga Māori values are informed by practice that is led by Māori, rather than by what might be learnt abstractly.
  • Knowledge is deeply place-based and has evolved from embodied ways of living in relationship with te taiao, over generations.
  • There is no fixed content, no singular truth or universally accessible information that is available to all.

I think there are lots of Pākehā, like me, who support the vision of Aotearoa being a place in which te ao Māori is revered by all, cultivated and celebrated. An Aotearoa in which indigenous ways of knowing lead us forward.

I also think that many of us are still realising that there is really no way to do this inside Pākehā systems as they stand. Put simply, Māori ways of knowing are not best supported by Pākehā ways of being. And knowing this, if someone asked us to start the project again, Ko Au Te Taiao would almost certainly not be on a website. It’s somewhat of an oxymoron.

So for me, alongside a commitment to centring mātauranga Māori, there also needs to be an acknowledgement that we cannot do this inside Pākehā models of transmission. And I don’t want to write myself out of employment here, but perhaps Pākehā like me are not that useful in the design of new ways of being. We just don’t know what we don’t know. And that’s okay. It’s important we accept the un-knowing.

The conclusion then is that European New Zealanders simply can’t get near MM because they don’t have the “right model of transmission” and never will.  But since MM has coequal status, this gives Māori control of half of the educational system, at least as far as “ways of knowing” are concerned.  Yet Europeans constitute 67,8% of New Zealanders, Maori 17.8%, Asians 17.3%, and other Pacific peoples 8.9%. (Māori is also spoken as a daily language by only 4% of New Zealanders—the same as Chinese) compared to over 95% who speak English.  Clearly the indigenous peoples are asking for a huge inequity in education, but of course they use the Treaty of Waitangi to buttress their aims to transform education.

Finally, behold the claim that “knowledge is deeply place-based”, which is surely not true for modern science and should not be true for MM if it really is a “way of knowing”.  As readers have pointed out, any knowledge that purports to be scientific cannot be place-limited, for then every region (e.g., the Pacific Northwest) has a “way of knowing” that applies only to that region. Of course, if your “knowledge” deals with phenomena or things that occur only in your country, then it could be place-based, but that can lead to nonsense like the millions of dollars spent on Māori-guided initiatives like playing whale songs to kauri trees (and rubbing them with whale oil) to cure a fungal disease that is killing those iconic trees of New Zealand. After all, Māori legend tells us that whales and kauri trees used to be brothers, but the whales made off for the sea, and the kauri trees got sick because, as landlubbers, they were lonely. I am not making this up, and see those defending MM emitting an angry response to the post I just linked to.

That dumb kauri/whale project cost $4 million NZ.  It is a total waste of money since there is no scientific reason to play songs to trees and rub them with whale oil especially because we know that the cause of “kauri dieback” is an organism that infects the trees underground: oomycetes, a fungus-like eukaryote. If kauri dieback is to be solved, it will be the methods of modern science that does it (indeed, that’s how they identified the cause), not indigenous knowledge, which doesn’t have the tools or tradition to deal with problems like this.

Finally, by saying what’s b elow, Hopkinson explicitly disqualifies MM as any real kind of knowledge- or truth-generating system.

There is no fixed content, no singular truth or universally accessible information that is available to all.

The conferring of primacy on indigenous knowledge is part of the Critical Social Justice ideology mentioned by my correspondent. The other part is the implication that the Māori are victims of ongoing colonial bigotry, something that may have been true in the past but is not true now: if anything, there is strong affirmative action in the country favoring Māori.

Sarah admits her white guilt, as if the article was a sort of struggle session:

When I take a look around Aotearoa New Zealand, it is abundantly clear that all is not well. The values that my Pākehā ancestors brought to this land have also brought us to this moment, a time where those in kāwanatanga spheres of power are not informed by life giving systems. From inside a Pākehā worldview that continues to individualise, capitalise, exploit and commercialise, it is impossible to be in a living relationship with Papatūānuku.

And note that she has been educated by Mero, who apparently has adopted a role of a Kiwi Robin DiAngelo:

Over the course of developing this resource, Mero and I have begun a wonderful friendship. We have found ourselves talking widely about our histories, experiences, and truths, about what it is to be a Māori woman and what is to be a Pākehā woman. Our lives have deep contrasts and many things in common. Both are delightful to notice. And I have learnt so much about so many of my Pākehā habits and assumptions, because hard things have been able to be talked about with softness.

The last sentence implies that Rokz has, perhaps unconsciously, made white guilt sprout in Hopkinson.  Imagine what it would look like if Rokz, the Māori woman, said that she had learned about so many of her Māori habits from Hopkinson, and that was hard for her to hear! That would be pure blasphemy.

At any rate, do remember that this screed appeared on the website of the Museum of New Zealand in Wellington, a wonderful place where I visited for hours. Sadly, like the rest of New Zealand’s scientific establishment, it is in the process of being captured by Social Justice Ideology.

Categories: Science

Watching the Changing M87 Black Hole Event Horizon

Universe Today Feed - Tue, 01/28/2025 - 7:22am

The event horizon is a fascinating part of a black hole’s anatomy. In 2017, telescopes around the world gathered data on the event horizon surrounding the supermassive black hole at the heart of M87. This was the first time we had ever seen an image of such a phenomenon. Since then, 120,000 more images of the region have been captured and, as astronomers sift through the data, their model of M87’s event horizon has evolved. 

Black holes, formed from the collapse of massive stars or in some cases through other processes, are regions of space-time where gravity is so intense that it warps the fabric of the universe. The event horizon is the boundary surrounding a black hole, beyond which nothing—not even light—can escape its gravitational pull. It marks the point of no return for any matter or radiation that gets too close. Within the event horizon, the curvature of space-time becomes infinite, leading to a singularity, a point where density and gravity reach extremes that modern physics and mathematics struggle to model. The event horizon’s properties are critical to understanding black holes, as it represents the outermost layer hiding everything within. 

This artist’s impression shows a black hole about 800 million years after the Big Bang, during one of its short periods of rapid growth. Image Credit: Jiarong Gu

One such object sits at the centre of most galaxies and in particular at the centre of M87, a massive elliptical galaxy 53 million light years away. It’s approximately 120,000 light years across with an estimated trillion stars. At its core is a supermassive black hole which weighs in at about 6.5 billion times the mass of the Sun. It was this object which was imaged back in 2017 for the first time. 

The jet emerging from the galactic core of M87. NASA/STScI/AURA.

Since that first image of the event horizon around the M87 black hole, over 120,000 images have been used to analyse how the horizon has evolved since the first images were captured. Like all black holes, M87’s has a rotational axis and it is this, that the images have revealed something unexpected. 

A team of astronomers have confirmed that the axis points away from the Earth and have shown that the accretion disk suffers turbulence. Compared to images from 2017, the accretion disk has brightened and it is thought the turbulence in the accretion disk is the cause. As assistant professor Hung-Yi Pu from National Taiwan Normal University explains “the black hole accretion environment is turbulent and dynamic. Since we can treat the 2017 and 2018 observations as independent measurements, we can constrain the black hole’s surroundings with a new perspective.”

The accretion disk around M87* (as the black hole is referred to) is a swirling disk of gas and dust that orbits around the black hole before being pulled in. The disk forms when matter is stripped off nearby stars or from interstellar gas before spiralling in to the black hole under its immense gravitational pull. As the material accelerates in the disk and gets compressed, it heats up to millions of degrees, emitting radiation across the electromagnetic spectrum. It’s this radiation that often reveals the presence of a black hole.

3D rendering of a rapidly spinning black hole’s accretion disk and a resulting black hole-powered jet. Credit: Ore Gottlieb et al. (2024)

The discoveries from the super computer generated images reveal more about the dynamics in the regions surrounding a black hole. They find that material spiralling into a black hole from afar can either flow in the direction of the black hole’s rotation or in the opposite direction. 

Source : M87 One Year Later: Catching the Black Hole’s Turbulent Accretion Flow

The post Watching the Changing M87 Black Hole Event Horizon appeared first on Universe Today.

Categories: Science

Twisted light may illuminate how quantum spookiness works

New Scientist Feed - Tue, 01/28/2025 - 7:00am
Physicists have verified a connection between two counterintuitive quantum properties, which may help us understand how quantum objects stay inextricably connected through entanglement
Categories: Science

Readers’ wildlife photos

Why Evolution is True Feed - Tue, 01/28/2025 - 6:15am

Athayde Tonhasca Júnior contributes another text-and-photo essay to the site, this time showing how a thorough knowledge of ecology is required to save a declining species. His ID’s and captions are indented, and you can enlarge his photos by clicking on them.

The butterfly, the plant, and the ant

All news is bad news, it seems, especially about the environment. Melting glaciers, oceans choked with plastic, relentless deforestation, extinctions. In the face of such a depressing deluge, we could do with a feel-good tale. And as inspiring tales go, it’s hard to beat the Large Blue Story.

The large blue butterfly (Phengaris arion) has always been rare in Britain, but its numbers were found to be alarmingly low by 1972 and falling steadily thereafter. In 1979, it became extinct in the British Isles. At first, collectors were blamed for the large blue’s demise, which was a reasonable explanation considering the rarity and the appeal of such a beautiful butterfly. But soon attention was directed to another possibility: the depletion of wild thyme (Thymus praecox), the main food for the butterfly’s early larval instars (developmental stages). It turned out that food losses contributed to the large blue extinction, but the plot was considerably thicker.

The large blue butterfly, Phengaris arion. The species’ taxonomy is a matter of dispute, so it is also known as Maculinea arion © PJC&Co, Wikimedia Commons:

The large blue and about 75% of the 6,000 or so related species (family Lycaenidae) are myrmecophilous, that is, they are associated with ants. These butterfly-ant relationships vary in form and intensity, but in the case of the large blue, red ants (Myrmica spp.) mean food: without them, the butterfly cannot survive.

A female large blue lays her eggs on the flower buds of wild thyme – wild marjoram (Origanum vulgare) would do, but it usually flowers too late in the season for the butterfly. The emerging caterpillars eat the wild thyme flower heads and seeds for the first few weeks of their lives, like any ordinary butterfly. Siblings are also fair game: if two eggs hatch on the same flower, one baby caterpillar will eat the other. Then the surviving one goes full Dr Jekyll and Mr Hyde.

The grown caterpillar drops to the ground and starts releasing substances that attract worker ants, including pheromones that mimic the aroma of red ant larvae. When an ant bumps into it, the caterpillar stretches and twists to assume the shape of an ant larva. So instead of attacking the juicy, soft and nutritious caterpillar, the chemically mesmerised ants take their ‘stray young’ back to their nest. There the caterpillar is cared for just like the ants’ own brood.

Once inside an ant nest, some lycaenid species adopt a cuckoo lifestyle; they induce the ants to nurse and feed them through regurgitation. Not the large blue (and some related species): they feed on ant larvae, all the while secreting sugary substances to keep the ant workers happy.

A greater large blue (P. arionides) caterpillar feeding on M. kotokui larvae © Ueda et al., 2016:

The caterpillar carries on eating ant grubs until it pupates the following spring. The emerging adult crawls to the surface and seeks refuge in the nearby vegetation, where it expands its wings and flies away in search of a mate.

A gravid female butterfly (1) is attracted to wild marjoram (2) and lays her eggs on suitable flower buds (3). A fourth-instar caterpillar drops to the ground and is ‘adopted’ by ants (4). The caterpillar spends 11 months inside the ants’ nest, feeding on their brood (5) © Casacci et al., 2019:

The above was a summary of the complex biology and ecology of the large blue: UK butterflies has the full story.

The large blue’s reliance on wild thyme and red ants has been known for a long time, but none of the conservation efforts prevented its extinction in 1979. Things started to change when a PhD student – today Professor Jeremy Thomas, OBE, made a crucial discovery. Not just any red ant would do for the large blue. It needs one specific species: M. sabuleti (M. scabrinodis is an alternative host, but butterfly survival is poor with this ant).

Myrmica sabuleti, the crucial host for the large blue © B. Schoenmakers, Wikimedia Commons.

Thomas’ findings opened a whole new perspective for large blue conservation. If M. sabuleti populations are not doing well, the butterfly cannot do well either, regardless of the quantity and condition of the host plant.

It turns out that the survival and abundance of this ant depend largely on one factor: sunshine, which warms their nests. If grasses that grow alongside wild thyme are too tall, the ant nests will become shaded, cold and wet: the colonies will fail or be too small to sustain large blue populations. One caterpillar may require 200 ant larvae to reach adulthood, and about 350 ant workers may be needed to rear a single caterpillar. The conclusion from these findings was that fencing, thought to help the butterfly by keeping thyme-munchers at bay, is actually bad for the ants.

Wild thyme in full sunshine maintains healthy M. sabuleti colonies © GT1976, Wikimedia Commons:

Armed with this information, Nature Conservancy (now Natural England) and the Centre for Ecology and Hydrology launched a reintroduction programme, and its linchpin was the creation and management of adequate conditions for both the butterfly and the ant. Conservation organisations, land managers and volunteers set out to monitor large blue and M. sabuleti populations, manage grazing to keep the grass short, clear scrub and plant wild thyme. When a pilot site was considered in favourable condition in 1983, large blue specimens were brought in from Sweden. More releases followed at several suitable sites during subsequent years. Today, large blue colonies are more abundant and larger than they were in the 1950s.

The rescue of the large blue butterfly is a textbook case of species conservation, known and celebrated around the world. It inspires and shows us that science, hard work and goodwill go a long way to restore and protect our natural world.

Categories: Science

Space Shipyards Could Build Missions in Orbit

Universe Today Feed - Tue, 01/28/2025 - 5:17am

A classic scene from several high sci-fi movies and shows is when the characters approach their new spaceship in space for the first time. It is typically attached to a massive structure – think of the Kuat Drive Yards in Star Wars or the Utopia Planitia Fleet Yards around Mars in Star Trek. These gigantic structures play a role akin to what dry docks do for modern navies – they allow for the construction of ships in a relatively controlled environment with access to tools and equipment specialized for their construction. That is the idea behind a new NASA Institute for Advanced Concepts (NIAC) grant to ThinkOrbital, a company specializing in In-space assembly, manufacturing, and construction (ISAM&C). Their idea is to build a “Construction Assembly Destination” in orbit to build spacecraft in space.

That might seem like a lofty goal, but ThinkOrbital has some pedigree in doing ISAM&C tasks that no one else has done before. In May 2024, they launched and successfully tested the first-ever weld in space. The mission flew on a Falcon 9, spot-welded together some quarter-inch pieces of aluminum, and returned it to Earth, where the welds were closely examined.

They used a method called electron beam welding, which has several advantages for use in space. First, it doesn’t require as much power as a traditional arc welder—only around 2KW, equivalent to a household iron. Second, it doesn’t create a lot of heat, which can degrade the metal being welded and cause issues like splintering, which can become dangerous in zero-gravity situations.

Video describing the ThinkOrbital welder launch and test.
Credit – ThinkOrbital YouTube Channel

Doing a simple weld is a far cry from building an entire floating dry dock, but it is a step in that direction. Vojtech Holub, ThinkOrbital’s co-founder and CIO, said in an interview with Fraser that the company had actually submitted a proposal to NIAC for a more moderate step in the development of ISAM&C technology. However, the idea for a space station four times the size of the ISS “was not deemed futuristic enough.”

That rejection inspired the company to go bigger – by suggesting an entire orbital construction platform. In the interview, Dr. Volub talks about creating an interior space of 4,000 cubic meters by launching exterior plates akin to the hexagons on a soccer ball and welding them together in space using the company’s existing welder technology. In theory, if the process can be repeated, you could even build a large enough station to make something “up to [the size of] an Imperial Star Destroyer,” according to Dr. Holub.

There are some obvious difficulties in scaling up to that level, including requiring thicker plates and how to introduce gravity to any human occupants. Still, the general idea is scalable well beyond anything currently in orbit. As part of the NIAC grant, Dr. Holub and his team will have to develop a concept of operations (or CONOPS) for the development of the station, including how many launches it would take, what kind of structural loads it would be under, and how it would be assembled once it was up there.

The Orb2 was the original concept, introduced in a paper by Vojtech Holub, that spawned the idea of ThinkOrbital.
Credit – ThinkOrbital YouTube Channel

With answers to those questions in hand, ThinkOrbital would potentially be given a Phase II NIAC grant that would allow them to start building some prototypes to de-risk the technology. But they’ve got to complete Phase I first and compete with plenty of other ideas that NIAC has selected. If they are picked for a Phase II grant, though, it could move the start-up from concept to the reality of building a massive space for constructing space infrastructure – something humanity will need when it expands more throughout the solar system.

Learn More:
NASA / ThinkOrbital – Construction Assembly Destination
Vojtech Holub – Orb2: Spherical Space Station Designed for Single Launch and On-Orbit Assembly
UT – Blue Origin Announces the “Orbital Reef,” the Space Station they Plan to Build in Orbit
UT – Gateway Foundation Gives a Detailed Update on its Voyager Station Concept

Lead Image:
Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of Construction Assembly Destination
Credit – NASA/Ryan Benson/ThinkOrbital

The post Space Shipyards Could Build Missions in Orbit appeared first on Universe Today.

Categories: Science

The Skinny on DeepSeek

neurologicablog Feed - Tue, 01/28/2025 - 4:44am

On January 20th a Chinese tech company released the free version of their chatbot called DeepSeek. The AI chatbot, by all accounts, is about on par with existing widely available chatbots, like ChatGPT. It does not represent any new abilities or breakthrough in quality. And yet the release shocked the industry causing the tech-heavy stock market Nasdaq to fall 3%. Let’s review why that is, and then I will give some thoughts on what this means for AI in general.

What was apparently innovative about DeepSeek is that, the company claims, it was trained for only $8 million. Meanwhile ChatGPT 4 training cost over $100. The AI tech industry is of the belief that further advances in LLMs (large language models – a type of AI) requires greater investments, with ChatGPT-5 estimated to cost over a billion dollars. Being able to accomplish similar results at a fraction of the cost is a big deal. It may also mean that existing AI companies are overvalued (which is why their stocks tumbled).

Further, the company that made DeepSeek used mainly lower power graphics chips. Apparently they did have a horde of high end chips (the export of which are banned to China) but was able to combine them with more basic graphics chips to create DeepSeek. Again, this is what is disruptive – they are able to get similar results with lower cost components and cheaper training. Finally, this innovation represents a change for the balance of AI tech between the US and China. Up until now China has mainly been following the US, copying its technology and trailing by a couple of years. But now a Chinese company has innovated something new, not just copied US technology. This is what has China hawks freaking out. (Mr. President, we cannot allow an AI gap!)

There is potentially some good and some bad to the DeepSeek phenomenon. From a purely industry and market perspective, this could ultimately be a good thing. Competition is healthy. And it is also good to flip the script a bit and show that innovation does not always mean bigger and more expensive. Low cost AI will likely have the effect of lowering the bar for entry so that not only the tech giants are playing. I would also like to see innovation that allows for the operation of AI data centers requiring less energy. Energy efficiency is going to have to be a priority.

But what are the doomsayers saying? There are basically two layers to the concerns – fear over AI in general, and fears over China. Cheaper more efficient AIs might be good for the market, but this will also likely accelerate the development and deployment of AI applications, something which is already happening so fast that many experts fear we cannot manage security risks and avoid unintended consequences.

For example, LLMs can write code, and in some cases they can even alter their own code, even unexpectedly. Recently an AI demonstrated the ability to clone itself. This has often been considered a tipping point where we potentially lose control over AI – AI that an iterate and duplicate itself without human intervention, leading to code no one fully understands. This will make it increasingly difficult to know how an AI app is working and what it is capable of. Cheaper LLMs leading to proliferation obviously makes all this more likely to happen and therefore more concerning. It’s a bit like CRISPR – cheap genetic manipulation is great for research and medical applications, but at some point we begin to get concerned about cheap and easy genetic engineering.

What about the China angle? I wrote recently about the TikTok hubbub, and concerns about an authoritarian rival country having access to large amounts of data on US citizens as well as the ability to put their thumb on the scale of our internal political discourse (not to mention deliberate dumbing down our citizenry). If China takes the lead in AI this will give them another powerful platform to do the same. At the very least it subjects people outside of China to Chinese government censorship. DeepSeek, for example, will not discuss any details of Tiananmen Square, because that topic is taboo by the Chinese government.

It is difficult to know, while we are in the middle of all of this happening, how it will ultimately play out. In 20 years or so will we look back at this time as a period of naive AI panic, with fears of AI largely coming to nothing? Or will we look back and realize we were all watching a train wreck in slow motion while doing nothing about it? There is a third possibility – the YdK pathway. Perhaps we pass some reasonable regulations that allow for the industry to develop and innovate, while protecting the public from the worst risks and preventing authoritarian governments from getting their hands on a tool of ultimate oppression (at least outside their own countries). Then we can endlessly debate what would have happened if we did not take steps to prevent disaster.

The post The Skinny on DeepSeek first appeared on NeuroLogica Blog.

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