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Posted by Stephen Clark

Four small satellites rode a Rocket Lab Electron launch vehicle into orbit from Virginia early Thursday, beginning a government-funded technology demonstration mission to test the performance of a new spacecraft design.

The satellites were nestled inside a cylindrical dispenser on top of the 59-foot-tall (18-meter) Electron rocket when it lifted off from NASA’s Wallops Flight Facility at 12:03 am EST (05:03 UTC). A little more than an hour later, the rocket’s upper stage released the satellites one at a time at an altitude of about 340 miles (550 kilometers).

The launch was the starting gun for a “proof of concept” mission to test the viability of a new kind of satellite called DiskSats. These satellites were designed by the Aerospace Corporation, a nonprofit federally funded research and development center. The project is jointly financed by NASA and the US Space Force, which paid for DiskSat’s development and launch, respectively.

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ride_4ever: (Fannish 50 Challenge)
[personal profile] ride_4ever
The 19th Annual Fandom Holiday of More Joy Day will be Thursday, January 8th, 2026.

What is More Joy Day? In short it's this: in 2008, in the interest of spreading more joy, [personal profile] sdwolfpup proposed that on a designated day in early January we each engage in one or more acts, either online or in physical space (or both!), which bring joy to another person, and which might even inspire that person to spread joy further, exponentially onward.

For more details, and to see where to post on Dreamwidth your More Joy Day action(s), click here for [personal profile] sdwolfpup's post.

And here's a Fanlore entry about More Joy Day.

SPREAD JOY!
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Posted by Jennifer Ouellette

It probably sucked to be a Roman soldier guarding Hadrian’s Wall circa the third century CE. W.H. Auden imagined the likely harsh conditions in his poem “Roman Wall Blues,” in which a soldier laments enduring wet wind and rain with “lice in my tunic and a cold in my nose.” We can now add chronic nausea and bouts of diarrhea to his list of likely woes, thanks to parasitic infections, according to a new paper published in the journal Parasitology.

As previously reported, archaeologists can learn a great deal by studying the remains of intestinal parasites in ancient feces. For instance, in 2022, we reported on an analysis of soil samples collected from a stone toilet found within the ruins of a swanky 7th-century BCE villa just outside Jerusalem. That analysis revealed the presence of parasitic eggs from four different species: whipworm, beef/pork tapeworm, roundworm, and pinworm. (It’s the earliest record of roundworm and pinworm in ancient Israel.)

Later that same year, researchers from the University of Cambridge and the University of British Columbia analyzed the residue on an ancient Roman ceramic pot excavated at the site of a 5th-century CE Roman villa at Gerace, a rural district in Sicily. They identified the eggs of intestinal parasitic worms commonly found in feces—strong evidence that the 1,500-year-old pot in question was most likely used as a chamber pot.

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Wine Tasting at Byington

Dec. 18th, 2025 05:22 pm
canyonwalker: Cheers! (wine tasting)
[personal profile] canyonwalker
This past Saturday I went wine-tasting locally with my friend, Anthony. He and I had done a wine-tasting afternoon back in August, when we visited David Bruce Winery and Thomas Fogarty winery. My original plan for that day had been to visit three wineries, but at the first winery it became evident that we wouldn't have time for all three. Trimming it down to 2 worked really well for that day. We had 2 great visits without feel rushed. And it gave us a clear reason to get back together and do it again. We had to hit that third winery!

Byington Winery in Los Gatos - in the mountains above San Jose (Dec 2025)

Winery #3 from August's trip— the one we skipped— was Byington Winery. It's in the mountains of Los Gatos, perched about 2,000' above San Jose and the Silicon Valley.

Saturday turned out to be a great day for a visit, even though it was the middle of December rather than the middle of summer. That's because we had beautiful weather on Saturday. The sky was clear after morning fog burned off. Rain hadn't been seen for days. Down in the valley the daytime high on forecast was an average-for-the-time-of-year 60°F (17°C) or so. I expected it would be cooler 2,000' up in the mountains. But there seemed to be a temperature inversion up in the mountains, as it was shirt sleeves weather (high 60s) when we arrived. We stowed our sweaters in the trunk and headed inside.

We opted to take our tasting standing at the bar inside the hunting-lodge style main hall. A few other guests were at the bar so it was mildly social without feeling crowded. The tasting menu included 4 wines, which immediately turned into 5, then 6, then maybe 7. I lost count. One thing that's true about many wine-tasting venues is that if you're good company and you schmooze with the staff without coming across as a moocher, they'll open up some extra bottles for you. I can schmooze when I need/want to, though I often feel self-conscious about doing it. Anthony's a natural at it. In our conversation he talked about all the bars in town where he "knows" the bartenders and gets free drinks. 🍻

View across the Santa Cruz Mountains from Byington Winery in Los Gatos (Dec 2025)

After drinking our fill at the bar we headed outside to appreciate the view from the hilltop. I kind of wish we'd done this earlier in the afternoon, as toward the end of our visit the weather had turned cooler.

We didn't leave Byington empty-handed. No, far from it! Both of us generally liked most of the wines they poured for us. Our discuss as we worked through the list wasn't "if" we would buy bottles to take home but which ones. Anthony picked a few bottles of lighter flavors, a sweet chardonnay and a pinot noir, as his wife likes lighter flavors. (He figured bringing home bottles that she'd like would get him a pass to maybe do this again. 😅) I chose two bottles of a surprisingly well balanced chardonnay and a spendier Bordeaux-style blend. The latter was curious because I was all set to buy a bottle of a Barbera that tasted really nice. Then they poured that Bordeaux and it was lights-out for the Barbera. 🤣

Stay tuned.... One more winery to come!

The Friday FIve for 19 December 2025

Dec. 18th, 2025 07:44 pm
anais_pf: (Default)
[personal profile] anais_pf posting in [community profile] thefridayfive
1. What is one thing about you that you hate?

2. What is one thing about you that you love?

3. If you had to change one thing about you what would it be and why?

4. What is one word that you would use to define yourself?

5. Imagine what you would look like in a perfect world...what do you look like?

Copy and paste to your own journal, then reply to this post with a link to your answers. If your journal is private or friends-only, you can post your full answers in the comments below.

If you'd like to suggest questions for a future Friday Five, then do so on DreamWidth or LiveJournal. Old sets that were used have been deleted, so we encourage you to suggest some more!

Check In: Day 18

Dec. 18th, 2025 05:54 pm
glitteringstars: (ttrpg)
[personal profile] glitteringstars posting in [community profile] writethisfanfic
Good day to all! How has writing gone today?
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Posted by Eric Berger

A couple of hours after a judge formally swore in private astronaut Jared Isaacman as the next administrator of NASA on Thursday, President Donald Trump signed an executive order outlining his space policy objectives for the next three years.

The executive order, titled “Ensuring American Space Superiority,” states that the country must “pursue a space policy that will extend the reach of human discovery, secure the nation’s vital economic and security interests, unleash commercial development, and lay the foundation for a new space age.”

White House sets priorities

There is nothing Earth-shattering in the new executive order, as much of it builds on previously announced policies that span multiple administrations. There are some notable points in the document that clearly reflect the White House’s priorities, though, and Isaacman’s leadership of NASA.

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Posted by Ryan Whitwam

Google is generally happy to see people using generative AI tools to create content, and it’s doubly happy when they publish it on its platforms. But there are limits to everything. Two YouTube channels that attracted millions of subscribers with AI-generated movie trailers have been shuttered.

Screen Culture and KH Studio flooded the site with fake but often believable trailers. The channels, which had a combined audience of more than 2 million subscribers, became a thorn in Google’s side in early 2025 when other YouTubers began griping about their sudden popularity in the age of AI. The channels produced videos with titles like “GTA: San Andreas (2025) Teaser Trailer” and “Malcom In The Middle Reboot (2025) First Trailer.” Of course, neither of those projects exist, but that didn’t stop them from appearing in user feeds.

Google demonetized the channels in early 2025, forcing them to adopt language that made it clear they were not official trailers. The channels were able to monetize again, but the disclaimers were not consistently used. Indeed, many of the most popular videos from those channels in recent months included no “parody” or “concept trailer” disclosures. Now, visiting either channel’s page on YouTube produces an error reading, “This page isn’t available. Sorry about that. Try searching for something else.”

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Posted by Scharon Harding

Peacock subscribers will see ads immediately upon opening the streaming app or website next year. It’s a bold new strategy for attracting advertisers—something that’s been increasingly important to subscription-based streaming services—but it also risks alienating viewers

As reported by Variety, the new type of ads will display on the profile selection page that shows when a subscriber launches Peacock. Starting next year, instead of the profile page just showing your different Peacock profiles, most of the page will be dominated by an advertorial image. The circles of NBCUniversal-owned characters selected for user profiles will be relegated to a vertical column on the screen’s left side, as you can see here.

To avoid seeing what NBCUniversal is calling “Arrival Ads” every time you open Peacock, you need to subscribe to Peacock’s most expensive plan, which is ad-free and starts at $17 per month (Peacock’s ad-based plans start at $8/month.)

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Prompt 2701: Angel

Dec. 18th, 2025 11:28 pm
immortalje: Typwriter with hands typing (Default)
[personal profile] immortalje posting in [community profile] dailyicons

Today's prompt is: angel



• You have 2 days time to submit an icon for this prompt (in other words, until prompt 2703 gets posted)!
• Prompt 2699 have been closed.
• If you have any questions regarding the prompt, feel free to ask in a comment.
• To submit an icon you simply reply to this post with the following information:
Icon:
Claim: (only necessary if it's a specific claim)
Status: (e.g. #1/10 - number of icon completed/table size)

Pre-formatted
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Posted by Kyle Orland

If you’ve been too busy planning for Half-Life 3 to take part in this year’s Ars Technica Charity Drive sweepstakes, don’t worry. You still have time to donate to a good cause and get a chance to win your share of over $4,000 worth of swag (no purchase necessary to win).

In the first week or so of the drive, over 300 readers have contributed nearly $18,000 to either the Electronic Frontier Foundation or Child’s Play as part of the charity drive (Child’s Play has a roughly 55/45 donation lead at the moment). That’s still a long way from 2020’s record haul of over $58,000, but there’s plenty of time until the Charity Drive wraps up on Friday, January 2, 2026.

That doesn’t mean you should put your donation off, though. Do yourself and the charities involved a favor and give now while you’re thinking about it.

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Posted by Andrew Cunningham

The first few months of 2025 were full of graphics card reviews where we generally came away impressed with performance and completely at a loss on availability and pricing. The testing in these reviews is useful regardless, but when it came to extra buying advice, the best we could do was to compare Nvidia’s imaginary pricing to AMD’s imaginary pricing and wait for availability to improve.

Now, as the year winds down, we’re facing price spikes for memory and storage that are unlike anything I’ve seen in two decades of pricing out PC parts. Pricing for most RAM kits has increased dramatically since this summer, driven by overwhelming demand for these parts in AI data centers. Depending on what you’re building, it’s now very possible that the memory could be the single most expensive component you buy; things are even worse now than they were the last time we compared prices a few weeks ago.

Component Aug. 2025 price Nov. 2025 price Dec. 2025 price
Patriot Viper Venom 16GB (2 x 8GB) DDR-6000 $49 $110 $189
Western Digital WD Blue SN5000 500GB $45 $69 $102*
Silicon Power 16GB (2 x 8GB) DDR4-3200 $34 $89 $104
Western Digital WD Blue SN5000 1TB $64 $111 $135*
Team T-Force Vulcan 32GB DDR5-6000 $82 $310 $341
Western Digital WD Blue SN5000 2TB $115 $154 $190*
Western Digital WD Black SN7100 2TB $130 $175 $210
Team Delta RGB 64GB (2 x 32GB) DDR5-6400 $190 $700 $800

Some SSDs are getting to the point where they’re twice as expensive as they were this summer (for this comparison, I’ve swapped the newer WD Blue SN5100 pricing in for the SN5000, since the drive is both newer and slightly cheaper as of this writing). Some RAM kits, meanwhile, are around four times as expensive as they were in August. Yeesh.

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Posted by Ashley Belanger

A Florida middle school was locked down last week after an AI security system called ZeroEyes mistook a clarinet for a gun, reviving criticism that AI may not be worth the high price schools pay for peace of mind.

Human review of the AI-generated false flag did not stop police from rushing to Lawton Chiles Middle School. Cops expected to find “a man in the building, dressed in camouflage with a ‘suspected weapon pointed down the hallway, being held in the position of a shouldered rifle,'” a Washington Post review of the police report said.

Instead, after finding no evidence of a shooter, cops double-checked with dispatchers who confirmed that a closer look at the images indicated that “the suspected rifle might have been a band instrument.” Among panicked students hiding in the band room, police eventually found the suspect, a student “dressed as a military character from the Christmas movie Red One for the school’s Christmas-themed dress-up day,” the Post reported.

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Posted by John Timmer

There have been a number of high-profile cases where scientific papers have had to be retracted because they were filled with AI-generated slop—the most recent coming just two weeks ago. These instances raise serious questions about the quality of peer review in some journals—how could anyone let a figure with terms like “runctitional,” “fexcectorn,” and “frymblal” through, especially given the ‘m’ in frymblal has an extra hump? But it has not been clear whether these high-profile examples are representative. How significantly has AI use been influencing the scientific literature?

A collaboration of researchers at Berkeley and Cornell have decided to take a look. They’ve scanned three of the largest archives of pre-publication papers and identified ones that are likely to have been produced using Large Language Models. And they found that, while researchers produce far more papers after starting to use AI and the quality of the language used went up, the publication rate of these papers has dropped.

Searching the archives

The researchers began by obtaining the abstracts of everything placed in three major pre-publication archives between 2018 and mid-2024. At the arXiv, this netted them 1.2 million documents; another 675,000 were found in the Social Science Research Network; and bioRxiv provided another 220,000. So, this was both a lot of material to work with and covered a lot of different fields of research. It also included documents that were submitted before Large Language Models were likely to be able to produce output that would be deemed acceptable.

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Liminal time

Dec. 18th, 2025 09:00 pm
[personal profile] cosmolinguist

This morning I mused that today is in that liminal space where I cannot yet eat the cheese we bought for Christmas but there are mince pies on the countertop and I could have one for breakfast.

I did have one for breakfast. (With a slice of regular cheese because mince pies are too sweet for me on their own and taste really good with strong cheese.)

D and I are off to family Christmas celebrations tomorrow, so I signed off work this afternoon for the last time until 2026!

In the three previous years I've had a white collar job, I've never taken this long off, I've always worked a little between Christmas and new year. I kinda like it for catching up on stuff when work is quiet and people leave me alone, and long stretches of unstructured time isn't good for my mental health.

But this time, I'm so ready for this. This year has been so long.

(I know myself well enough to expect that I'll be horrified on the 27th of December when I have a whole week ahead of me with nothing to do. But I can worry about that when I get to it.)

I'm a little sad to be missing queer club's Christmas party this evening, but my carefully planned after-work itinerary fell apart almost as soon as I made it, when my friend L texted and asked if I could come over because he and his husband (also my friend) were having a bad mental health time thanks to the DWP (they are both disabled).

I almost literally dropped everything and left the house, because L isn't the kind of person who gets in touch spontaneously, has the energy for social stuff, or can ask for help easily, so for him to do all these things felt like a big deal to me.

It felt kinda weird to leave in what felt like an emergency and arrive only able to offer hugs and silly, distracting conversation. But I'm assured that it did help. And I'm glad I could do it, I like them so much. It was a good use of my social spoons for the evening.

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Posted by Nate Anderson

Guitarists today are spoiled for choice, and that goes doubly true for players who use computer-based amp modeling software. I’m one such player, and I don’t miss the size, weight, deafening volume, or cost of owning an amp and cabinet collection, to say nothing of all those pedals and cables. For clean to mid-gain tones alone, I already have more terrific options than I need, including Neural DSP’s Tone King and Cory Wong and Mateus Asato, Polychrome DSP’s Lumos, and Universal Audio’s new Paradise Guitar Studio. All work slightly differently, but they can each output record-ready tones that are really, really close to the (often incredibly expensive) hardware that they model, and they each give you plenty of great-sounding presets to start from.

So do we really need one amp sim package?

Neural DSP thinks we do, because the Finnish company just dropped a major new release yesterday called Archetype: John Mayer X. It doesn’t model Mayer’s type of gear but his actual hardware units, along with all the actual settings he uses in the studio and on stage. It even has some presets that he designed. Which is great if you want to sound like John Mayer—but what does the software offer for those of us not trying to cover Continuum?

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Posted by Stephen Clark

When the Perseverance rover arrived on Mars nearly five years ago, NASA officials thought the next American lander to take aim on the red planet would be taking shape by now.

At the time, the leaders of the space agency expected this next lander could be ready for launch as soon as 2026—or more likely in 2028. Its mission would have been to retrieve Martian rock specimens collected by the Perseverance rover, then billed as the first leg of a multilaunch, multibillion-dollar Mars Sample Return campaign.

Here we are on the verge of 2026, and there’s no sample retrieval mission nearing the launch pad. In fact, no one is building such a lander at all. NASA’s strategy for a Mars Sample Return, or MSR, mission remains undecided after the projected cost of the original plan ballooned to $11 billion. If MSR happens at all, it’s now unlikely to launch until the 2030s.

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Posted by Samuel Axon

The holidays have snuck up on us. How is it already that time?

If you’re on top of things and have already bought all your Christmas gifts, I commend you. Not all of us are so conscientious. In fact, one of us is so behind on holiday prep that he is not only running late on buying gifts; he’s also behind on publishing the Ars staff gift guide he said he’d write. (Whoever could we be talking about?)

So for my fellow last-minute scramblers, I polled Ars writers and editors for gift ideas they know will be solid because they’ve actually used them. As such, you’ll find gift options below that Ars staffers have used enough to feel good about recommending. Further, I made sure all of these are available for delivery before Christmas as of today, at least where I live.

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50 Questions About Books & Reading

Dec. 18th, 2025 09:56 am
amado1: (Default)
[personal profile] amado1
 1. What's the first book you ever remember reading?

It's kind of a wild card -- I know it wasn't the first book I ever read, just the first I remember. My mom had a big leatherbound copy of Shakespeare's tragedies; it was one of her high school textbooks. When I was 4, Rich was really enamored with Shakespeare and with theatre in general, but he couldn't read yet. So we'd sit cuddled up together on the steps of our house and I'd read Romeo and Juliet to him. That was his favorite play, so we read it over and over again. I didn't understand a ton of it, but the illustrations helped, and I remember a few years later Rich and I would deface that book by painstakingly copying the illustrations, in crayon, in the margins. 

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