Technologies

A ‘Messy’ Star Death: How an Early Muse of NASA’s Webb Telescope Came to Be

The Southern Ring Nebula, brought to you by a star’s explosive demise.

When NASA released the James Webb Space Telescope’s very first images this year, astronomers and space-lovers all over the world were met with a menagerie of blurred galaxies from near the beginning of time, coffee-hued dust clouds brimming with wonderful secrets and incandescent realms fit for Disney princess castles. It was a glorious moment for humankind, witnessing how stars can unite us beneath our layers of division.

But among this trailblazing telescope’s first five images, one especially stood out not only for its beauty but also for its mystery — a striking portrait of the Southern Ring Nebula hid an important history yet to be known. Simply, scientists wanted to learn what, exactly, caused this intricate, amoeba-shaped, ancient star explosion aftermath to exist?

Et, voila.

On Thursday, an international team of nearly 70 astronomers used the JWST’s stunning image to deduce the Southern Ring Nebula’s backstory.

Details are published in the journal Nature Astronomy, but basically, what they found is that some 2,500 years ago, a star nearly three times the size of our sun died at about 500 million years of age.

When it died, they say, the stellar body ejected most of its mass into surrounding space, forming shrouds of gas that slowly expanded with time until they turned into the complex folds we see today in the JWST’s Southern Ring Nebula structure.

Then, when all was said and done, the deceased star left behind a sort of corpse, or white dwarf star, with about half the mass of our sun but around the size of Earth. (That’s super dense, to be clear).

Plus, as an added surprise, the astronomers also found evidence of two or three companion stars they believe hastened the blown up star’s death — as well an «innocent bystander» star that might’ve just gotten caught up in the mix.

«When we first saw the images, we knew we had to do something, we must investigate!» Orsola De Marco, lead author of the paper and astrophysicist at Macquarie University, said in a statement. «The community came together, and from this one image of a randomly chosen nebula, we were able to discern much more precise structures than ever before. The promise of the James Webb Space Telescope is incredible.»

That Southern Ring Nebula image really is something

Even back in July, the JWST’s Southern Ring Nebula rendition had raised eyebrows during its reveal. I mean, at the top left of one version of the JWST’s view, taken with the Mid-Infrared instrument, a weird bluish line ended up literally being a galaxy photobomber.

«I made a bet that said, ‘It’s part of the nebula,'» NASA astronomer Karl Gordon recounted during the unveiling. «I lost the bet, because then we looked more carefully at both Nircam and MIRI images, and it’s very clearly an edge-on galaxy.»

We were also able to see not one but two stars dance around one another at the marvel’s center for the first time, stirring the pot of gas and dust to create the ornate patterns that make the image perfect as an iPhone background. (Yes, one of these is the white dwarf that De Marco and fellow scientists discuss in their latest paper.)

«This star is now small and hot but is surrounded by cool dust,» Joel Kastner, another team member from the Rochester Institute of Technology, said in a statement. «We think all that gas and dust we see thrown all over the place must have come from that one star, but it was tossed in very specific directions by the companion stars.»

The other star visible in the JWST’s photo, according to the team, is just one of the companion stars that orbits the central star while the latter loses mass over time.

However, as to why the team believes there aren’t just two stars at play here but rather three, four – maybe more – that’s because of how a series of spiral structures seem to be moving out from the center, generating arches, and how a 3D view of the nebula’s data points to irregular jets of matter shooting from the phenomenon’s center.

«We first inferred the presence of a close companion because of the dusty disk around the central star, the further partner that created the arches and the super far companion that you can see in the image,» De Marco said. «Once we saw the jets, we knew there had to be another star or even two involved at the center, so we believe there are one or two very close companions, an additional one at middle distance and one very far away.

«If this is the case, there are four or even five objects involved in this messy death.»

Technologies

AI Notification Summaries Come Back to iPhone News Apps, but With a Warning

Apple disabled these summaries for most of 2025.

Apple brought AI notification summaries for news and entertainment apps back to Apple Intelligence-enabled iPhones when the company released iOS 26 in September. Apple disabled these summaries in early 2025 after the BBC pointed out in December 2024 that the feature twisted the media organization’s notifications and displayed inaccurate information.

What’s different now about these summaries is that your device’s settings warn you that the summaries might be inaccurate. Your device will also note that you should verify the information in these summaries, and the best way I can think of to do this is to tap into the notification and read the story. This might defeat the purpose of the summaries for some people, but it could also ensure people read past a headline.

Here’s what to know about those AI summaries and the new warning.

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

iOS 26 warns about summary inaccuracies

When I updated to iOS 26, I was greeted by some splash screens asking for various permissions. One splash screen was for the AI notification summaries. When you see this screen, you have two options: Choose Notifications to Summarize or Not Now. If you tap Not Now, the splash screen goes away.

If you tap Choose Notifications to Summarize, you’re taken to a new page where you’ll see three categories: News & Entertainment, Communication & Social and All Other Apps. Tapping one of these categories allows notification summaries for apps in that category. Beneath the News & Entertainment category, there’s a warning that gets outlined in red if you tap it.

«Summarization may change the meaning of the original headline,» the warning reads, adding, «Verify information.»

There’s also a warning across the bottom of the screen that reads, «This is a beta feature. Summaries may contain errors.»

After tapping the categories you want, tap Summarize Selected Notifications across the bottom of your screen. If you selected all the categories, this button will read Summarize All Notifications.

And if you don’t want these summaries, you can tap Do Not Summarize Notifications. If you allow these summaries and don’t like them, you can easily turn them off. Here’s how.

How to turn off AI notification summaries

1. Tap Settings.
2. Tap Notifications.
3. Tap Summarize Notifications.

4. Tap the Summarize Notifications toggle in the new menu.

You can also follow the above steps to turn AI notification summaries back on. You’ll have to select which categories you want these summaries for again, too.

For more iOS news, here’s what to know about iOS 26.2 and what was included in iOS 26.1. You can also check out our iOS 26 cheat sheet for other tips and tricks.

Technologies

Today’s NYT Connections: Sports Edition Hints and Answers for Jan. 7, #471

Here are hints and the answers for the NYT Connections: Sports Edition puzzle for Jan. 7, No. 471.

Looking for the most recent regular Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle and Strands puzzles.

Today’s Connections: Sports Edition is a bit tricky. The blue category was a real stumper for me, though I found the purple group easy today for a change. If you’re struggling with today’s puzzle but still want to solve it, read on for hints and the answers.

Connections: Sports Edition is published by The Athletic, the subscription-based sports journalism site owned by The Times. It doesn’t appear in the NYT Games app, but it does in The Athletic app. Or you can play it for free online.

Read more: NYT Connections: Sports Edition Puzzle Comes Out of Beta

Hints for today’s Connections: Sports Edition groups

Here are four hints for the groupings in today’s Connections: Sports Edition puzzle, ranked from the easiest yellow group to the tough (and sometimes bizarre) purple group.

Yellow group hint: On the ice.

Green group hint: Run and jump.

Blue group hint: Baseball bosses.

Purple group hint: Golden State schools.

Answers for today’s Connections: Sports Edition groups

Yellow group: NHL teams with singular nicknames

Green group: A bit of track and field equipment.

Blue group: MLB managers.

Purple group: Mascots for University of California schools in the singular.

Read more: Wordle Cheat Sheet: Here Are the Most Popular Letters Used in English Words

What are today’s Connections: Sports Edition answers?

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

The yellow words in today’s Connections

The theme is NHL teams with singular nicknames. The four answers are Avalanche, Kraken, Lightning and Mammoth.

The green words in today’s Connections

The theme is a bit of track and field equipment. The four answers are baton, hurdle, javelin and pole.

The blue words in today’s Connections

The theme is MLB managers. The four answers are Cash, Counsell, Marmol and Vogt.

The purple words in today’s Connections

The theme is mascots for University of California schools, in the singular. The four answers are Banana Slug, Bruin, Gaucho and Golden Bear.

Technologies

Yes, This Swimming RoboTurtle Is Adorable. It Also Has an Important Environmental Mission

Beatbot is best known for making pool-cleaning robots, but it was its swimming robot turtle that won our hearts at CES 2026.

Few things in life have made me feel more privileged and awestruck than the opportunity to swim with sea turtles in their natural environment. The way in which these gentle creatures navigate through their underwater world with their deliberate and careful fin strokes is utterly mesmerizing to watch.

It’s a distinctive style of movement — so much so that when I saw Beatbot’s RoboTurtle swim across a water tank on the show floor at CES 2026, I knew that this wasn’t simply just a pool cleaner robot with turtle features tacked on. This was a studied example of biomimicry in action.

The reason for this is that the company’s engineers went on a two-month expedition to study sea turtles in their natural environment, Beatbot’s Eduardo Campo told me as we watched Turtini (the team’s affectionate nickname for RoboTurtle) splash around in its pool. «We did a lot of motion capture, like the things they use in movies, because we need to develop those joints that it has,» he said.

This isn’t RoboTurtle’s first time at CES — it also appeared in 2025 as a static concept. This is the year, however, it’s found its fins, so to speak. Not only can it swim, but it can also respond to hand gestures: I throw it an OK gesture, and it dances in response. But as cute and limber as it is, RoboTurtle is a robot with an important mission.

RoboTurtle is an environmental research tool, built with input from researchers and NGOs, which can go where humans or other machines cannot for fear of disturbing complex and delicate underwater ecosystems, particularly coral reefs. It can move silently and naturally in a way that won’t scare wildlife, monitoring water quality and fish numbers with its built-in camera.

«One of the groups that we’re working with, they want to study the coral reefs in near Indonesia,» said Campo. «There was a very big incident over there with a boat that came up onto a coral reef and it disrupted the environment, [so] they want the least intrusive robot possible.»

The group wants to deploy RoboTurtle for certain periods every year to monitor the recovery of the coral and monitor the fish population, he added. Beatbot is currently training the built-in AI to give RoboTurtle monitoring and recognition skills.

At CES, I watched RoboTurtle paddle about only on the surface of the pool, but it can also dive down up to five meters. However, it needs to resurface to send data and its GPS signal back to base, much like a real turtle that needs to come to the surface to breathe. This also gives it a chance to recharge via the solar panel on its back.

Even though I was impressed with RoboTurtle’s swimming ability, Campo estimates that the Beatbot team is still a year and a half away from perfecting its technique, with the robot ready for full deployment in between three to five years.

CES 2026 is a show where tech with a real purpose feels scarce, so it sure is refreshing to see a company use its expertise to build something designed with a sustainable future in mind. It might be a while until we see RoboTurtle take to the seas, but I’m glad that I got to witness it at this stage of its journey.