Science – Page 26

These hornets break down alcohol so fast that they can’t get drunk

alcohol consumption, Biology, entymology, Genetics, hornets, insects, Science / Kelly Newman / October 29, 2024

Many animals, including humans, have developed a taste for alcohol in some form, but excessive consumption often leads to adverse health effects. One exception is the Oriental wasp. According to a new paper published in the Proceedings of the National Academy of Sciences, these wasps can guzzle seemingly unlimited amounts of ethanol regularly and at very high concentrations with no ill effects—not even intoxication. They pretty much drank honeybees used in the same experiments under the table.

“To the best of our knowledge, Oriental hornets are the only animal in nature adapted to consuming alcohol as a metabolic fuel,” said co-author Eran Levin of Tel Aviv University. “They show no signs of intoxication or illness, even after chronically consuming huge amounts of alcohol, and they eliminate it from their bodies very quickly.”

Per Levin et al., there’s a “drunken monkey” theory that predicts that certain animals well-adapted to low concentrations of ethanol in their diets nonetheless have adverse reactions at higher concentrations. Studies have shown that tree shrews, for example, can handle concentrations of up to 3.8 percent, but in laboratory conditions, when they consumed ethanol in concentrations of 10 percent or higher, they were prone to liver damage.

Similarly, fruit flies are fine with concentrations up to 4 percent but have increased mortality rates above that range. They’re certainly capable of drinking more: fruit flies can imbibe half their body volume in 15 percent (30 proof) alcohol each day. Not even spiking the ethanol with bitter quinine slows them down. Granted, they have ultra-fast metabolisms—the better to burn off the booze—but they can still become falling-down drunk. And fruit flies vary in their tolerance for alcohol depending on their genetic makeup—that is, how quickly their bodies adapt to the ethanol, requiring them to inhale more and more of it to achieve the same physical effects, much like humans.

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“Impact printing” is a cement-free alternative to 3D-printed structures

3D printing, construction, materials science, Science / Mike M. / October 29, 2024

Recently, construction company ICON announced that it is close to completing the world’s largest 3D-printed neighborhood in Georgetown, Texas. This isn’t the only 3D-printed housing project. Hundreds of 3D-printed homes are under construction in the US and Europe, and more such housing projects are in the pipeline.

There are many factors fueling the growth of 3D printing in the construction industry. It reduces the construction time; a home that could take months to build can be constructed within days or weeks with a 3D printer. Compared to traditional methods, 3D printing also reduces the amount of material that ends up as waste during construction. These advantages lead to reduced labor and material costs, making 3D printing an attractive choice for construction companies.

A team of researchers from the Swiss Federal Institute of Technology (ETH) Zurich, however, claims to have developed a robotic construction method that is even better than 3D printing. They call it impact printing, and instead of typical construction materials, it uses Earth-based materials such as sand, silt, clay, and gravel to make homes. According to the researchers, impact printing is less carbon-intensive and much more sustainable and affordable than 3D printing.

This is because Earth-based materials are abundant, recyclable, available at low costs, and can even be excavated at the construction site. “We developed a robotic tool and a method that could take common material, which is the excavated material on construction sites, and turn it back into usable building products, at low cost and efficiently, with significantly less CO₂ than existing industrialized building methods, including 3D printing,” said Lauren Vasey, one of the researchers and an SNSF Bridge Fellow at ETH Zurich.

How does impact printing work?

Excavated materials can’t be used directly for construction. So before beginning the impact printing process, researchers prepare a mix of Earth-based materials that has a balance of fine and coarse particles, ensuring both ease of use and structural strength. Fine materials like clay act as a binder, helping the particles stick together, while coarser materials like sand or gravel make the mix more stable and strong. This optimized mix is designed such that it can move easily through the robotic system without getting stuck or causing blockages.

“Impact printing” is a cement-free alternative to 3D-printed structures Read More »

A candy engineer explains the science behind the Snickers bar

Biology, candy, Food science, health, Science, syndication / 9u50fv / October 29, 2024

It’s Halloween. You’ve just finished trick-or-treating and it’s time to assess the haul. You likely have a favorite, whether it’s chocolate bars, peanut butter cups, those gummy clusters with Nerds on them, or something else.

For some people, including me, one piece stands out—the Snickers bar, especially if it’s full-size. The combination of nougat, caramel, and peanuts coated in milk chocolate makes Snickers a popular candy treat.

As a food engineer studying candy and ice cream at the University of Wisconsin-Madison, I now look at candy in a whole different way than I did as a kid. Back then, it was all about shoveling it in as fast as I could.

Now, as a scientist who has made a career studying and writing books about confections, I have a very different take on candy. I have no trouble sacrificing a piece for the microscope or the texture analyzer to better understand how all the components add up. I don’t work for, own stock in, or receive funding from Mars Wrigley, the company that makes Snickers bars. But in my work, I do study the different components that make up lots of popular candy bars. Snickers has many of the most common elements you’ll find in your Halloween candy.

Let’s look at the elements of a Snickers bar as an example of candy science. As with almost everything, once you get into it, each component is more complex than you might think.

Snickers bars contain a layer of nougat, a layer of caramel mixed with peanuts, and a chocolate coating. Credit: istarif/iStock via Getty Images

Airy nougat

Let’s start with the nougat. The nougat in a Snickers bar is a slightly aerated candy with small sugar crystals distributed throughout.

One of the ingredients in the nougat is egg white, a protein that helps stabilize the air bubbles that provide a light texture. Often, nougats like this are made by whipping sugar and egg whites together. The egg whites coat the air bubbles created during whipping, which gives the nougat its aerated texture.

A boiled sugar syrup is then slowly mixed into the egg white sugar mixture, after which a melted fat is added. Since fat can cause air bubbles to collapse, this step has to be done last and very carefully.

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How can you write data to DNA without changing the base sequence?

biochemistry, Biology, DNA storage, epigenetics, Science, Storage / Beth Washington / October 29, 2024

The developers of the system call each of these potentially modifiable spots on the template an epi-bit, with the modified version corresponding to a 1 in a conventional computer bit and the unmodified version corresponding to a 0. Because no synthesis is required, multiple bits can be written simultaneously. To read the information, the scientists rigged the system so that 1s fluoresce and 0s don’t. The fluorescence, along with the sequences of bases, was read as the DNA was passed through a tiny pore.

Pictures in a meta-genome

Using this system, Zhang et al. created five DNA templates and 175 bricks to record 350 bits at a time. Using a collection of tagged template molecules, the researchers could store and read roughly 275,000 bits, including a color picture of a panda’s face and a rubbing of a tiger from the Han dynasty, which ruled China from 202 BCE to 220 CE.

They then had 60 student volunteers “with diverse academic backgrounds” store texts of their choice in epi-bits using a simple kit in a classroom. Twelve of the 15 stored texts were read successfully.

We’re not quite ready for your cat videos yet, though. There are still errors in the printing and reading steps, and since these modifications don’t survive when DNA is copied, making additional versions of the stored information may get complicated. Plus, the stability of these modifications under different storage conditions remains unknown, although the authors note that their epi-bits stayed stable at temperatures of up to 95o° C.

But once these and a few other problems are solved—and the technology is scaled up, further optimized and automated, and/or tweaked to accommodate other types of epigenetic modifications—it will be a clever and novel way to harness natural data storage methods for our needs.

Nature, 2024. DOI: 10.1038/s41586-024-08040-5

How can you write data to DNA without changing the base sequence? Read More »

Lidar mapping reveals mountainous medieval cities along the Silk Road

ancient cities, Archeology, LiDAR, Science, Silk Road / Beth Washington / October 28, 2024

The city of Tugunbulak, which stretched beyond the forest inspector’s house, had powerful walls enclosing the area of 120 hectares, nearly five times larger than the Tashbulak site. With those walls, there was a dense architecture with hundreds of buildings, streets, palaces, plazas—even industrial facilities the Frachetti’s team suspects were used to produce iron or steel.

To put that in perspective, the medieval walls of Siena, one of the foremost cities in Italy during that time, surrounded an area of 105 hectares at the peak of its power. Genoa, another crown jewel among Italian medieval cities, between the 6th and 11th centuries, had walls protecting just 20 hectares, an area bumped up to around 50 hectares by the time of Frederic Barbarossa’s invasion between 1155 and 1158 CE.

Tugunbulak was a monster of a city. But what did it look like?

A city of iron?

“If you looked at Tugunbulak from the outside you would have seen these kind of rocky walls. They appear to have been made in a technology called rammed earth. The builders would take mud and press it into something almost like cement—a very high labor, very dense, very defensive and fortified material,” Frachetti says. Rammed earth was a dominant building technique used in the early stages of Tugunbulak’s development. “The later phase in the site, we see some stone architecture foundations with mud brick on the top. They used local resources and building techniques that were popular in the region,” Frachetti explains.

According to the team, the main contribution of the city to the Silk Road trade was iron, as the surrounding mountains are particularly rich in iron ore. One of the still unanswered questions was about the way Tugunbulak’s people lived and worked. Were they skillful blacksmiths forging iron and perhaps even steel in their mountainous city? Did at least some of its inhabitants live the lives of nomads, visiting the city only periodically to trade on market days or did they live there permanently? “We’d like to know how extensive was the industry there—what level of production were they actually doing?” Franchetti says. He suggested that a shifting, seasonal population that most likely lived in yurts spread outside of the walls was more likely in the smaller Tashbulak, considering it lacked residential suburbs. “Tugunbulak must have been a far more organized political entity. Their power and their influence must have been significant in the broader economy of the Silk Road,” Frachetti claims.

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NASA’s oldest active astronaut is also one of the most curious humans

don pettit, NASA, Science, Space / DJ Henderson / October 28, 2024

For his most recent trip to the International Space Station, in lieu of bringing coffee or some other beverage in his “personal drink bag” allotment for the stay, NASA astronaut Don Pettit asked instead for a couple of bags of unflavored gelatin.

This was not for cooking purposes but rather to perform scientific experiments. How many of us would give up coffee for science?

Well, Donald Roy Pettit is not like most of us.

At the age of 69, Pettit is NASA’s oldest active astronaut and began his third long-duration stay on the space station last month. A lifelong tinkerer and gifted science communicator, he already is performing wonders up there, and we’ll get to his current activities in a moment. But just so you understand who we’re dealing with, the thing to know about Pettit is that he is insatiably curious, and wants to share the wonder of science and the natural world with others.

Here’s just one small example. During his last six-month increment in orbit, from late 2011 to the middle of 2012, Pettit had some Lego blocks he’d been using for student demonstrations. After the final one, he asked if he could use the Legos for a science experiment. He turned them into a belts-and-rollers-type Van de Graaff generator and produced groundbreaking work in electric fluids. This research was published in Physical Review Letters after Pettit returned to Earth. Most of us probably could not even spell Van de Graaff generator, and this dude is up there, in space, building them out of toys.

The way Pettit, a chemical engineer by training, explains things is that he has the “programmatic” scientific research he does for NASA, and then there’s everything else, often done during his limited free time.

“This is well-planned, well thought out, peer-reviewed, and uplinked to station with the supplies needed,” he said of programmatic research. “And then you have what I call science of opportunity. This is science which comes to mind while you are there, simply because you are there, and you can do it because you can. The scientific disciplines that I’ve dabbled in on the International Space Station include fluid physics, classic physics, chemistry, biology, plant growth, and Earth observations.”

Wafers of water ice. Credit: Don Pettit/NASA

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Pizza place accidentally spiked dough with THC, sickening dozens

edibles, health, pizza, poisoning, Science, THC / DJ Henderson / October 28, 2024

In a statement on its website, Yeti’s co-owner Cale Ryan said that police testing “confirmed that pizza had been sold with dough mistakenly prepared with Delta-9-contaminated oil. The oil accidentally used in the product originated from a shared storage space in the on-site cooperative commercial kitchen.”

Oil jug with no label

Over the weekend, Ryan explained further to the Wisconsin State Journal that when Famous Yeti’s ran out of olive oil for its pizza dough, one of the cooks went across the hall to borrow some. “It’s not normal to do, but you borrow a cup of sugar from a neighbor,” Ryan said. “We went over to borrow some oil and grabbed the wrong one.” The contamination affected one batch of dough, which makes 60 pizzas, he said.

According to the health department, the oil the cook took “was in a clear plastic jug that looks like other cooking oils. There was a label on the cap that had manufacturer’s information, use by date, and noted it contained Delta-9 cannabis. The operator did not notice the label on the cap. There was no additional labeling on the body of the bottle.” The health department said it doesn’t know what dosages ended up in the pizza.

THC exposure can cause dizziness, increased blood pressure, increased heart rate, nausea, vomiting, anxiety, panic attacks, paranoia, hallucinations, short-term memory impacts, time distortion, and sleepiness. “Keep in mind each person’s reaction may be different, and the concentration of THC in the pizza can vary by piece,” the health department cautioned.

In a letter posted to Facebook Friday, Ryan apologized and took full responsibility for the contamination. “We put people and families at risk and frightened and confused children and parents. … I am incredibly sorry that I allowed us to act this irresponsibly and ended up hurting the people who have made Yetis [sic] the wonderful place it has been.”

According to America’s Poison Centers, cannabis edible exposures have been increasing among children and teens since at least 2019. Much like what happened at Yeti’s, the trend in accidental poisonings can be blamed on poor labeling and cannabis products that resemble common foods, including candies. To date, Poison Centers have tracked nearly 7,000 exposures in children this year. “While edible cannabis does not typically result in serious problems for adults, children have more severe reactions and are more likely to require medical attention” the poison centers say. In children, severe reactions to cannabis can include slowed breathing, seizure, and coma.

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Graphene-enhanced ceramic tiles make striking art

chemistry, graphene, materials science, Science, science and art / Shannon Garcia / October 28, 2024

In recent years, materials scientists experimenting with ceramics have started adding an oxidized form of graphene to the mix to produce ceramics that are tougher, more durable, and more resistant to fracture, among other desirable properties. Researchers at the National University of Singapore (NUS) have developed a new method that uses ultrasound to more evenly distribute graphene oxide (GO) in ceramics, according to a new paper published in the journal ACS Omega. And as a bonus, they collaborated with an artist who used the resulting ceramic tiles to create a unique art exhibit at the NUS Museum—a striking merger of science and art.

As reported previously, graphene is the thinnest material yet known, composed of a single layer of carbon atoms arranged in a hexagonal lattice. That structure gives it many unusual properties that hold great promise for real-world applications: batteries, super capacitors, antennas, water filters, transistors, solar cells, and touchscreens, just to name a few.

In 2021, scientists found that this wonder material might also provide a solution to the fading of colors of many artistic masterpieces. For instance, several of Georgia O’Keeffe’s oil paintings housed in the Georgia O’Keeffe Museum in Santa Fe, New Mexico, have developed tiny pin-sized blisters, almost like acne, for decades. Conservators have found similar deterioration in oil-based masterpieces across all time periods, including works by Rembrandt.

Van Gogh’s Sunflower series has been fading over the last century due to constant exposure to light. A 2011 study found that chromium in the chrome yellow Van Gogh favored reacted strongly with other compounds like barium and sulfur when exposed to sunlight. A 2016 study pointed the finger at the sulfates, which absorb in the UV spectrum, leading to degradation.

Even contemporary art materials are prone to irreversible color changes from exposure to light and oxidizing agents, among other hazards. That’s why there has been recent work on the use of nanomaterials for conservation of artworks. Graphene has a number of properties that make it attractive for art-conservation purposes. The one-atom-thick material is transparent, adheres easily to various substrates, and serves as an excellent barrier against oxygen, gases (corrosive or otherwise), and moisture. It’s also hydrophobic and is an excellent absorber of UV light.

Graphene-enhanced ceramic tiles make striking art Read More »

A how-to for ethical geoengineering research

carbon capture, carbon dioxide removal, climate change, Earth science, Geoengineering, research ethics, Science, solar radiation management / 9u50fv / October 26, 2024

Holistic climate justice: The guidelines recognize that geoengineering won’t affect just those people currently residing on Earth, but on future generations as well. Some methods, like stratospheric aerosols, don’t eliminate the risks caused by warming, but shift them onto future generations, who will face sudden and potentially dramatic warming if the geoengineering is ever stopped. Others may cause regional differences in either benefits or warming, shifting consequences to different populations.

Special attention should be paid to those who have historically been on the wrong side of environmental problems in the past. And harms to nature need to be considered as well.

Inclusive public participation: The research shouldn’t be approached as simply a scientific process; instead, any affected communities should be included in the process, and informed consent should be obtained from them. There should be ongoing public engagement with those communities and adapt to their cultural values.

Transparency: The public needs to be aware of who’s funding any geoengineering research and ensure that whoever’s providing the money doesn’t influence decisions regarding the design of the research. Those decisions, and the considerations behind them, should also be made clear to the public.

Informed governance: Any experiments have to conform to laws ranging from local to international. Any research programs should be approved by an independent body before any work starts. All the parties involved—and this could include the funders, the institutions, and outside contractors—should be held accountable to governments, public institutions, and those who will potentially be impacted by the work.

If you think this will make pursuing this research considerably more complicated, you are absolutely correct. But again, even tests of these approaches could have serious environmental consequences. And many of these things represent best practices for any research with potential public consequences; the fact that they haven’t always been pursued is not an excuse to continue to avoid doing them.

A how-to for ethical geoengineering research Read More »

If you thought Astra was going to go away quietly, you were wrong

astra, rocket 4, Science, Space / Beth Washington / October 26, 2024

On Wednesday morning, a surprising email popped into my inbox with the following subject line: “Astra announces Department of Defense contract valued up to $44 Million.”

I had to read it a second time to make sure I got it right. Astra, the launch company? Astra, whose valuation went from $2.6 billion to $25 million after a series of launch failures? Astra, the company that was taken private in July at 50 cents a share?

Yes, it was that Astra.

This was curious, indeed. To get some answers, I spoke with the cofounder of Astra, Chris Kemp, who remains the company’s chief executive.

“If I have learned anything, it’s that you just don’t give up,” Kemp said. “You know, if you give up easily, this is not the place to be. Fortunately, I am surrounded by a team that has chosen not to give up.”

Rocket 4 becomes more real

I’ll be frank: When Kemp and his co-founder, Adam London, took Astra private this summer, I never expected to hear from the company again. Astra certainly was not the first launch company to fail, and it won’t be the last. But it is the first to seemingly resurrect itself in such a dramatic way.

To be clear, Astra is not back yet. The company remains in the phase of building and testing rocket stages and engines and does not have a launch vehicle ready to go. Its new booster, Rocket 4, will launch no earlier than the fourth quarter of 2025, Kemp said. (That date should probably be viewed with some skepticism).

The company has previously discussed Rocket 4, which is intended to carry 600 kg to low-Earth orbit, as far back as August 2022. But at the time, most of the launch industry, including this reporter, shrugged and moved along. After all, the company’s smaller vehicle, Rocket 3, failed on five of its seven orbital launch attempts. The general sentiment was that the new rocket would never fly.

However, even as Astra’s finances worsened and the company had to stave off bankruptcy by being taken private, not everyone dismissed the vision. In April 2023, the US Space Force awarded a task order for Rocket 4 to launch the STP-S29B mission. That was interesting, but it was just a single data point. Then came this week’s announcement that the US Department of Defense’s “Defense Innovation Unit” had awarded a grant worth up to $44 million to Astra for a “tactically responsive launch system.”

If you thought Astra was going to go away quietly, you were wrong Read More »

Study: DNA corroborates “Well-man” tale from Norse saga

ancient DNA, Archaeology, forensic archaeology, Norse history, Norse mythology, Norse sagas, paleogenomics, Science / Mike M. / October 26, 2024

The results: The Well-man was indeed male, between 30 and 40, with blue eyes and blond or light-brown hair, and his ancestry was traced to southern Norway, most likely present-day Vest-Agder. This is interesting because King Sverre’s men were from central Norway, and it had long been assumed that the dead body thrown into the well was part of that army. It was the invading Baglers who hailed from southern Norway. The authors are careful to note that one cannot definitively conclude that therefore the Well-man was a Bagler, but it’s certainly possible that the Baglers tossed one of their own dead into the well.

As for whether the action was a form of 12th-century biological warfare intended to poison the well, the authors weren’t able to identify any pathogens in their analysis. But that might be because of the strict decontamination procedures that were used to prepare the tooth samples, which may have also removed traces of any pathogen DNA. So they could not conclude one way or another whether the Well-man had been infected with a deadly pathogen at the time of his death.

Seven well-man teeth recovered from excavation — Seven Well-man teeth recovered from the excavation. Credit: Norwegian Institute for Cultural Heritage Research

“It was a compromise between removing surface contamination of the people who have touched the tooth and then removing some of the possible pathogens. There are lots of ethical considerations,” said co-author Martin Ellegaard, also of the Norwegian University of Science and Technology. “We need to consider what kind of tests we’re doing now because it will limit what we can do in the future.”

The fact that the Well-man hailed from southern Norway indicates that the distinctive genetic drift observed in southern Norway populations already existed during King Sverre’s reign. “This has implications for our understanding of Norwegian populations, insofar as it implies that this region must have been relatively isolated not only since that time, but also at least for a few hundred years beforehand and perhaps longer,” the authors concluded. Future research sequencing more ancient Norwegian DNA would shed further light on this finding—perhaps even the remains of the Norwegian Saint Olaf, believed to be buried near Trondheim Cathedral.

iScience, 2024. DOI: 10.1016/j.isci.2024.111076 (About DOIs).

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Rocket Report: Sneak peek at the business end of New Glenn; France to fly FROG

astra, blue origin, china, Commercial space, launch, new glenn, new shepard, rocket report, Science, Space, starship, united launch alliance, vulcan / Kelly Newman / October 26, 2024

“The vehicle’s max design gimbal condition is during ascent when it has to fight high-altitude winds.”

Blue Origin’s first New Glenn rocket, with seven BE-4 engines installed inside the company’s production facility near NASA’s Kennedy Space Center in Florida. Credit: Blue Origin

Welcome to Edition 7.17 of the Rocket Report! Next week marks 10 years since one of the more spectacular launch failures of this century. On October 28, 2014, an Antares rocket, then operated by Orbital Sciences, suffered an engine failure six seconds after liftoff from Virginia and crashed back onto the pad in a fiery twilight explosion. I was there and won’t forget seeing the rocket falter just above the pad, being shaken by the deafening blast, and then running for cover. The Antares rocket is often an afterthought in the space industry, but it has an interesting backstory touching on international geopolitics, space history, and novel engineering. Now, Northrop Grumman and Firefly Aerospace are developing a new version of Antares.

As always, we welcome reader submissions. If you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

Astra gets a lifeline from DOD. Astra, the launch startup that was taken private again earlier this year for a sliver of its former value, has landed a new contract with the Defense Innovation Unit (DIU) to support the development of a next-gen launch system for time-sensitive space missions, TechCrunch reports. The contract, which the DIU awarded under its Novel Responsive Space Delivery (NRSD) program, has a maximum value of $44 million. The money will go toward the continued development of Astra’s Launch System 2, designed to perform rapid, ultra-low-cost launches.

Guarantees? … It wasn’t clear from the initial reporting how much money DIU is actually committing to Astra, which said the contract will fund continued development of Launch System 2. Launch System 2 includes a small-class launch vehicle with a similarly basic name, Rocket 4, and mobile ground infrastructure designed to be rapidly set up at austere spaceports. Adam London, founder and chief technology officer at Astra, said the contract award is a “major vote of confidence” in the company. If Astra can capitalize on the opportunity, this would be quite a remarkable turnaround. After going public at an initial valuation of $2.1 billion, or $12.90 per share, Astra endured multiple launch failures with its previous rocket and risked bankruptcy before the company’s co-founders, Chris Kemp and Adam London, took the company private again this year at a price of just $0.50 per share. (submitted by Ken the Bin and EllPeaTea)

Blue Origin debuts a new New Shepard. Jeff Bezos’ Blue Origin space venture successfully sent a brand-new New Shepard rocket ship on an uncrewed shakedown cruise Wednesday, with the aim of increasing the company’s capacity to take people on suborbital space trips, GeekWire reports. The capsule, dubbed RSS Karman Line, carried payloads instead of people when it lifted off from Blue Origin’s Launch Site One in West Texas. But if all the data collected during the 10-minute certification flight checks out, it won’t be long before crews climb aboard for similar flights.

Now there are two … With this week’s flight, Blue Origin now has two human-rated suborbital capsules in its fleet, along with two boosters. This should allow the company to ramp up the pace of its human missions, which have historically flown at a cadence of about one flight every two to three months. The new capsule, named for the internationally recognized boundary of space 62 miles (100 kilometers) above Earth, features upgrades to improve performance and ease reusability. (submitted by Ken the Bin and EllPeaTea)

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China has a new space tourism company. Chinese launch startup Deep Blue Aerospace targets providing suborbital tourism flights starting in 2027, Space News reports. The company was already developing a partially reusable orbital rocket named Nebula-1 for satellite launches and recently lost a reusable booster test vehicle during a low-altitude test flight. While Deep Blue moves forward with more Nebula-1 testing before its first orbital launch, the firm is now selling tickets for rides to suborbital space on a six-person capsule. The first two tickets were expected to be sold Thursday in a promotional livestream event.

Architectural considerations … Deep Blue has a shot at becoming China’s first space tourism company and one of only a handful in the world, joining US-based Blue Origin and Virgin Galactic in the market for suborbital flights. Deep Blue’s design will be a single-stage reusable rocket and crew capsule, similar to Blue Origin’s New Shepard, capable of flying above the Kármán line and providing up to 10 minutes of microgravity experience for its passengers before returning to the ground. A ticket, presumably for a round trip, will cost about $210,000. (submitted by Ken the Bin)

France’s space agency aims to launch a FROG. French space agency CNES will begin flight testing a small reusable rocket demonstrator called FROG-H in 2025, European Spaceflight reports. FROG is a French acronym that translates to Rocket for GNC demonstration, and its purpose is to test landing algorithms for reusable launch vehicles. CNES manages the program in partnership with French nonprofits and universities. At 11.8 feet (3.6 meters) tall, FROG is the smallest launch vehicle prototype at CNES, which says it will test concepts and technologies at small scale before incorporating them into Europe’s larger vertical takeoff/vertical landing test rockets like Callisto and Themis. Eventually, the idea is for all this work to lead to a reusable European orbital-class rocket.

Building on experience … CNES flew a jet-powered demonstrator named FROG-T on five test flights beginning in May 2019, reaching a maximum altitude of about 100 feet (30 meters). FROG-H will be powered by a hydrogen peroxide rocket engine developed by the Łukasiewicz Institute of Aviation in Poland under a European Space Agency contract. The first flights of FROG-H are scheduled for early 2025. The structure of the FROG project seeks to “break free from traditional development methods” by turning to “teams of enthusiasts” to rapidly develop and test solutions through an experimental approach, CNES says on its website. (submitted by EllPeaTea and Ken the Bin)

Falcon 9 sweeps NSSL awards. The US Space Force’s Space Systems Command announced on October 18 it has ordered nine launches from SpaceX in the first batch of dozens of missions the military will buy in a new phase of competition for lucrative national security launch contracts, Ars reports. The parameters of the competition limited the bidders to SpaceX and United Launch Alliance (ULA). SpaceX won both task orders for a combined value of $733.5 million, or roughly $81.5 million per mission. Six of the nine missions will launch from Vandenberg Space Force Base, California, beginning as soon as late 2025. The other three will launch from Cape Canaveral Space Force Station, Florida.

Head-to-head … This was the first set of contract awards by the Space Force’s National Security Space Launch (NSSL) Phase 3 procurement round and represents one of the first head-to-head competitions between SpaceX’s Falcon 9 and ULA’s Vulcan rocket. The nine launches were divided into two separate orders, and SpaceX won both. The missions will deploy payloads for the National Reconnaissance Office and the Space Development Agency. (submitted by Ken the Bin)

SpaceX continues deploying NRO megaconstellation. SpaceX launched more surveillance satellites for the National Reconnaissance Office Thursday aboard a Falcon 9 rocket, Spaceflight Now reports. While the secretive spy satellite agency did not identify the number or exact purpose of the satellites, the Falcon 9 likely deployed around 20 spacecraft believed to be based on SpaceX’s Starshield satellite bus, a derivative of the Starlink spacecraft platform, with participation from Northrop Grumman. These satellites host classified sensors for the NRO. This is the fourth SpaceX launch for the NRO’s new satellite fleet, which seeks to augment the agency’s bespoke multibillion-dollar spy satellites with a network of smaller, cheaper, more agile platforms in low-Earth orbit.

The century mark … This mission, officially designated NROL-167, was the 100th flight of a Falcon 9 rocket this year and the 105th SpaceX launch overall in 2024. The NRO has not said how many satellites will make up its fleet when completed, but the intelligence agency says it will be the US government’s largest satellite constellation in history. By the end of the year, the NRO expects to have 100 or more of these satellites in orbit, allowing the agency to transition from a demonstration mode to an operational mode to deliver intelligence data to military and government users. Many more launches are expected through 2028. (submitted by Ken the Bin)

ULA is stacking its third Vulcan rocket. United Launch Alliance has started assembling its next Vulcan rocket—the first destined to launch a US military payload—as the Space Force prepares to certify it to loft the Pentagon’s most precious national security satellites, Ars reports. Space Force officials expect to approve ULA’s Vulcan rocket for military missions without requiring another test flight, despite an unusual problem on the rocket’s second demonstration flight earlier this month, when one of Vulcan’s two strap-on solid-fueled boosters lost its nozzle shortly after liftoff.

Pending certification … Despite the nozzle failure, the Vulcan rocket continued climbing into space and eventually reached its planned injection orbit, and the Space Force and ULA declared the test flight a success. Still, engineers want to understand what caused the nozzle to break apart and decide on corrective actions before the Space Force clears the Vulcan rocket to launch a critical national security payload. This could take a little longer than expected due to the booster problem, but Space Force officials still hope to certify the Vulcan rocket in time to support a national security launch by the end of the year.

Blue Origin’s first New Glenn has all its engines. Blue Origin published a photo Thursday on X showing all seven first-stage BE-4 engines installed on the base of the company’s first New Glenn rocket. This is a notable milestone as Blue Origin proceeds toward the first launch of the heavy-lifter, possibly before the end of the year. But there’s a lot of work for Blue Origin to accomplish before then. These steps include rolling the rocket to the launch pad, running through propellant loading tests and practice countdowns, and then test-firing all seven BE-4 engines on the pad at Cape Canaveral Space Force Station, Florida.

Seven for seven … The BE-4 engines will consume methane fuel mixed with liquid oxygen for the first few minutes of the New Glenn flight, generating more than 3.8 million pounds of combined thrust. The seven BE-4s on New Glenn are similar to the BE-4 engines that fly two at a time on ULA’s Vulcan rocket. Dave Limp, Blue Origin’s CEO, said three of the seven engines on the New Glenn first stage have thrust vector control capability to provide steering during launch, reentry, and landing on the company’s offshore recovery vessel. “That gimbal capability, along with the landing gear and Reaction Control System thrusters, are key to making our booster fully reusable,” Limp wrote on X. “Fun fact: The vehicle’s max design gimbal condition is during ascent when it has to fight high-altitude winds.”

Next Super Heavy booster test-fired in Texas. SpaceX fired up the Raptor engines on its next Super Heavy booster, numbered Booster 13, Thursday evening at the company’s launch site in South Texas. This happened just 11 days after SpaceX launched and caught the Super Heavy booster on the previous Starship test flight and signals SpaceX could be ready for the next Starship test flight sometime in November. SpaceX has already test-fired the Starship upper stage for the next flight.

Great expectations … We expect the next Starship flight, which will be program’s sixth full-scale demo mission, will include another booster catch back at the launch tower at Starbase, Texas. SpaceX may also attempt to reignite a Raptor engine on the Starship upper stage while it is in space, demonstrating the capability to steer itself back into the atmosphere on future flights. So far, SpaceX has only launched Starships on long, arcing suborbital trajectories that carry the vehicle halfway around the world before reentry. In order to actually launch a Starship into a stable orbit around Earth, SpaceX will want to show it can bring the vehicle back so it doesn’t reenter the atmosphere in an uncontrolled manner. An uncontrolled reentry of a large spacecraft like Starship could pose a public safety risk.

Next three launches

Oct. 26: Falcon 9 | Starlink 10-8 | Cape Canaveral Space Force Station, Florida | 21: 47 UTC

Oct. 29: Falcon 9 | Starlink 9-9 | Vandenberg Space Force Base, California | 11: 30 UTC

Oct. 30: H3 | Kirameki 3 | Tanegashima Space Center, Japan | 06: 46 UTC

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

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