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

You’ll Soon Be Able to Buy Walmart Products Through ChatGPT

OpenAI’s chatbot already connects to Etsy and Shopify. Now you can buy bananas too.

OpenAI and Walmart will soon offer shopping via AI through ChatGPT, the retail giant said in a press release on Tuesday.

While using ChatGPT’s Instant Checkout feature, customers can buy groceries, electronics or other essentials within the chatbot interface.

Walmart has its own AI assistant in its app named Sparky. With Sparky, customers can ask questions about products and get summaries of reviews to find the best item.

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«For many years now, e-commerce shopping experiences have consisted of a search bar and a long list of item responses. That is about to change,» Walmart CEO Doug McMillon said in a statement. «There is a native AI experience coming that is multi-media, personalized and contextual. We are running towards that more enjoyable and convenient future with Sparky and through partnerships including this important step with OpenAI.»

When asked for comment, Walmart referred to its press release. Walmart also said it wouldn’t discuss the financial terms of the agreement at this time.

«We’re excited to partner with Walmart to make everyday purchases a little simpler. It’s just one way AI will help people every day under our work together,» OpenAI CEO Sam Altman said in a press release.

OpenAI referred to Walmart’s press release when asked for comment.

The latest deal with Walmart comes as OpenAI tries to make ChatGPT an all-in-one shopping experience. AI chatbots are increasingly being used as vehicles for online shopping. They can synthesize reviews from across the internet and give people direct answers to shopping questions. Already, ChatGPT connects with Etsy and Shopify with its Instant Checkout feature, allowing people to buy directly. OpenAI also added more shopping features in ChatGPT Search earlier this year.

(Disclosure: Ziff Davis, CNET’s parent company, in April filed a lawsuit against OpenAI, alleging it infringed Ziff Davis copyrights in training and operating its AI systems.)

Technologies

OpenAI Will Loosen ChatGPT’s Mental Health Guardrails and Allow Erotica for Adult Users

Sam Altman said the company will ease limits for adults after rolling out age verification.

ChatGPT is treading cautiously right now, but the chatbot may become more risqué by the end of the year.

In recent weeks, the generative AI chatbot has been operating under somewhat stringent limitations, as OpenAI tried to address concerns that it was not handling sensitive mental health issues well. But CEO Sam Altman said in a post on X Tuesday that the company would ease some of those restrictions because it’s «been able to mitigate the serious mental health issues.»

Though Altman didn’t elaborate on what tools are being used to address the problem, OpenAI recently announced new parental controls in ChatGPT.

CNET reached out to OpenAI for details, but the company did not immediately respond to a request for comment. (Disclosure: Ziff Davis, CNET’s parent company, in April filed a lawsuit against OpenAI, alleging it infringed Ziff Davis copyrights in training and operating its AI systems.)

Other changes are also expected. Altman said the company could allow «erotica» for verified adult users as it implements an «age-gating» system, or age-restricted content, in December. The mature content is part of the company’s «treat adult users like adults» principle, Altman said.

Altman’s post also announced a new version of ChatGPT in the next few weeks, with a personality that behaves more like the company’s GPT-4o model. Chatbot users had complained after the company replaced 4o with the impersonal GPT-5 earlier this year, saying the new version lacked the engaging and fun personality of previous chatbot models.

«If you want your ChatGPT to respond in a very human-like way, or use a ton of emoji, or act like a friend, ChatGPT should do it (but only if you want it, not because we are usage-maxxing),» Altman wrote.

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After OpenAI was sued by parents who alleged ChatGPT contributed to their teen son’s suicide, the company imposed an array of new restrictions and changes, including parental controls, alerts for risky behavior and a teen-friendly version of the chatbot. In the summer, OpenAI implemented break reminders that encourage people to occasionally stop chatting with the bot.

On Tuesday, the company also announced the creation of a council of experts on AI and well-being, including some with expertise in psychology and human behavior.

This comes as lawmakers and regulators are ringing the alarm on the risks AI tools pose to people, especially children. On Monday, California Governor Gavin Newsom signed new restrictions on AI companion chatbots into law. Last month, the Federal Trade Commission launched an investigation into several AI companies, including OpenAI.

Technologies

Today’s NYT Strands Hints, Answers and Help for Oct. 15 #591

Here are hints — and the answers — for the NYT Strands puzzle for Oct. 15, No. 591.

Looking for the most recent Strands answer? Click here for our daily Strands hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections and Connections: Sports Edition puzzles.

Today’s NYT Strands puzzle is a fun one, once you understand the theme. Some of the answers are a bit tough to unscramble, so if you need hints and answers, read on.

I go into depth about the rules for Strands in this story.

If you’re looking for today’s Wordle, Connections and Mini Crossword answers, you can visit CNET’s NYT puzzle hints page.

Read more: NYT Connections Turns 1: These Are the 5 Toughest Puzzles So Far

Hint for today’s Strands puzzle

Today’s Strands theme is: Going up?

If that doesn’t help you, here’s a clue: Not an escalator, but…

Clue words to unlock in-game hints

Your goal is to find hidden words that fit the puzzle’s theme. If you’re stuck, find any words you can. Every time you find three words of four letters or more, Strands will reveal one of the theme words. These are the words I used to get those hints but any words of four or more letters that you find will work:

ROTATE, LOBE, NOPE, RATS, STAR, SAME, LOSE, VOTE, BUTTE, SAMS, BAMS

Answers for today’s Strands puzzle

These are the answers that tie into the theme. The goal of the puzzle is to find them all, including the spangram, a theme word that reaches from one side of the puzzle to the other. When you have all of them (I originally thought there were always eight but learned that the number can vary), every letter on the board will be used. Here are the nonspangram answers:

ALARM, OPEN, CLOSE, LOBBY, GROUND, BASEMENT

Today’s Strands spangram

Today’s Strands spangram is ELEVATORBUTTONS. To find it, look for the E that’s three letters to the right on the bottom row, and wind straight up, and then straight down.