Technologies

Astronomers have 12 new tools to study dark matter mysteries

A dozen stellar streams have entered the chat.

Studying dark matter is complicated. In reality, the best way to think about the phenomenon is as transparent matter. We can’t seem to see it, and it doesn’t interact with light, so essentially, it’s invisible to us.

But scientists haven’t backed down from the challenge. To date, they’ve come up with numerous unique ways to unveil the elusive stuff, as well as theories to explain it — and in a paper published Tuesday in the Astrophysical Journal, a team of experts just added several new tools to the dark matter quest’s arsenal.

They discovered a dozen never-before-seen stellar streams, or sparkly, yet pulverized, remnants of ancient dwarf galaxies and star clusters orbiting the Milky Way. For eons, the Milky Way’s gravitational pull has been disrupting such river-like structures’ paths and eventually forcing them to merge with it.

In other words, our home galaxy has been feasting on its neighboring cosmic cul-de-sacs as though they’re well-placed buffets. «As our galaxy is getting older, it is getting fatter,» Ting Li, a professor at the University of Toronto and lead author of the paper, said in a statement. «This study gives us a snapshot of the Milky Way’s feeding habits, such as what kinds of smaller stellar systems it ‘eats.'»

So, where does dark matter tie in?

Well, stellar streams offer a roundaboutway of deriving information of the universe’s hidden building blocks by providing adjacent clues. For instance, astronomers can measure the streams’ orbital speed, rotation trajectory, chemical composition and shape to see what isn’t present.

«Think of a Christmas tree,» Geraint F. Lewis, a professor at the University of Sydney and author of the paper, said in a statement. «On a dark night, we see the Christmas lights, but not the tree they are wrapped around. But the shape of the lights reveals the shape of the tree. It is the same with stellar streams — their orbits reveal the dark matter.»

The logic is fitting, as the only reason we even know dark matter and dark energy exists is due to a sort of indirect reasoning: According to scientists’ calculations, all the universe’s normal matter can’t explain how most galaxies are held together and all the universe’s normal energy can’t account for it’s continuous expansion. We call the missing piece of the expansion puzzle dark energy, and of the structure puzzle, dark matter.

As per the team, the more stellar streams we can find, the closer we may be to understanding the nature of the universe’s mysterious side. In fact, that’s part of why Li and collaborators initiated a program called the Southern Stellar Stream Spectroscopic Survey to dedicate themselves to locating as many as possible. Along with data from the European Gaia mission — which aims to chart an ambitious 3D map of our galaxy — that’s how the research team found the new, promising stellar streams.

Further down the line, Li said, stellar streams may prove critical in figuring out how the Milky Way came to be in the first place, after the Big Bang. «For me, this is one of the most intriguing questions, a question about our ultimate origins,» Li said.

Technologies

Samsung’s Galaxy S25 Edge Is Down to Just $730 Today and It’s a Low-Profile Powerhouse

The Galaxy S25 Edge is down from $1,220 — a 40% savings on Samsung’s sleekest, slimmest phone yet.

Samsung’s Galaxy S25 Edge is built for people who want it all — a powerful camera, a sleek design and AI features that actually make life easier. From finding your favorite photo with a voice command to capturing stunning night video, this phone blends performance and personality in a titanium frame that’s as tough as it is beautiful.

Amazon has dropped the price of the Galaxy S25 Edge to just $730 — a 40% discount off its $1,220 list price. This is an excellent deal, but it could end at any time, so we suggest making your order sooner rather than later.

The Galaxy S25 Edge is fast. It has a 6.7-inch QHD Plus ProScaler display with a refresh rate of up to 120Hz, powered by a Snapdragon processor and paired with 12GB of RAM. It has 512GB of storage, which gives you plenty of room for high-res photos and 4K video, especially with its 200-megapixel rear camera and AI-enhanced selfie system.

Samsung’s Night Video mode helps you capture crisp footage in low light, while AI tools clean up background noise and even help you find specific photos by description. The virtual assistant can handle multistep tasks like searching for a restaurant and texting a friend — all in one ask.

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The titanium body is ultra-slim yet durable, with Corning Gorilla Glass Ceramic 2 for added toughness. And with Android 15 and One UI 7, you’ll get the latest software features and customization options.

For more Android savings, check out our best Galaxy S25 deals and top phone discounts.

MOBILE DEALS OF THE WEEK

Samsung Galaxy A36 5G 128GB Unlocked Phone (Awesome Black):

$350 (save $50)
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$300 (save $100)
Apple iPhone 14 128GB Unlocked Phone (Refurbished, Midnight):

$334 (save $295)

Deals are selected by the CNET Group commerce team, and may be unrelated to this article.

Why this deal matters

This is one of the best prices we’ve seen on Samsung’s Galaxy S25 Edge, and it’s packed with premium features like a 200MP camera, AI-powered search and editing and a titanium build. If you’ve been waiting for a flagship phone that’s smart, stylish and seriously discounted, this is one of the most tempting Android deals this season.

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Technologies

Nothing’s Signature Transparent Design Is Coming to a New Budget Phone This Week

Do you love the design of Nothing’s phones, but dislike the price? The Nothing 3A Lite might be the perfect device for you.

British tech company Nothing is best known for its retro-inspired transparent technology design, but it’s never been the most affordable option on the market. That looks set to change this week, with the company set to unveil the Nothing 3A Lite on Wednesday.

Nothing says that this will be its first entry-level smartphone, and it will incorporate the transparent design elements seen across the company’s range of phones and headphones. We’ve been given our first glimpse of what looks like the back panel of the phone in a photo from Nothing, but we’ll have to wait until Wednesday at 1 p.m. GMT for the full reveal.

The addition of the 3A Lite to Nothing’s phone lineup follows on from the launch of the Nothing Phone 3 (the company’s «first, true flagship») this summer, and the mid-range 3A and 3A Pro back in the spring. For the first time, the company will offer smartphones that range from budget to high-end in price, meaning that there should be something for everyone.

The Nothing Phone 3A Lite is an «interesting prospect,» said CNET Editor at Large Andrew Lanxon, who reviewed the all three of the existing phones in the 3 series. «Nothing’s phones are already budget-focused, with the existing Phone 3A coming with a low to midrange price tag,» he said. «I’ll be keen to see just how much cheaper Nothing can make its phones, while still offering a pleasant everyday user experience.

«Crucially, they should still offer long software support periods to increase the shelf life — and thereby reduce the overall carbon footprint,» he added. «Value should not come at the expense of longevity»

Nothing currently offers six years of Android support with the Nothing Phone 3, which falls short of the seven years Google offers with its latest Pixel phones. The company alsorecently killed off its flashy Glyph interface — I personally think the replacement is better — and has increasingly been emphasizing its original use of AI as a selling point for its phones.

Technologies

Today’s NYT Strands Hints, Answers and Help for Oct. 27, #603

Here are hints and answers for the NYT Strands puzzle for Oct. 27, No. 603.

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 fun, but some of the answers are long and quite 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: Witch way?

If that doesn’t help you, here’s a clue: What Harry Potter finds out he is.

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:

CARD, DINT, RANT, MULE, MALE, HARM, MALT, TALE, TINT, CANT, ROAD

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:

WAND, CHARM, AMULET, POTION, INCANTATION, CAULDRON.

Today’s Strands spangram

Today’s Strands spangram is WIZARDRY. To find it, look for the W that’s three letters to the right on the top row, and wind down.

Quick tips for Strands

#1: To get more clue words, see if you can tweak the words you’ve already found, by adding an «S» or other variants. And if you find a word like WILL, see if other letters are close enough to help you make SILL, or BILL.

#2: Once you get one theme word, look at the puzzle to see if you can spot other related words.

#3: If you’ve been given the letters for a theme word, but can’t figure it out, guess three more clue words, and the puzzle will light up each letter in order, revealing the word.