Technologies

Space Cities Inside Asteroids Could Actually Work, Scientists Say

The plan «on the edge of science and science fiction» involves an asteroid, an expandable mesh bag and a whole lot of audacity.

Good news, Earthlings. We have more to look forward to than just the drab landscape of the moon or the inhospitable surface of Mars when it comes to far-flung future human civilizations off this rock. We might one day be living la vida asteroid.

Yes, space-faring piles of rocky rubble (like famous asteroid Bennu) could be home sweet home. A group of scientists at the University of Rochester in New York worked out a plan for turning asteroids into spinning space cities with artificial gravity. The researchers published a «wildly theoretical» study in Frontiers in Astronomy and Space Sciences earlier this year.

«Our paper lives on the edge of science and science fiction,» said co-author Adam Frank in a University of Rochester statement last week. Frank is a professor of physics and astronomy at the school.

The basic concept behind the asteroid city builds on an idea called the O’Neill cylinder, a rotating space colony design proposed by physicist Gerard O’Neill in the 1970s. The rotation creates artificial gravity. Think of something along the lines of the cylindrical Cooper Station in the movie Interstellar. It’s a fascinating idea, but it would be difficult and expensive to transport enough material into space to make a large-scale O’Neill cylinder.

This is where things get wilder. The Rochester research team proposes a way to turn a rock pile of an asteroid into a cylinder by surrounding it with a thin, high-strength mesh bag made from carbon nanofibers. It would have an accordion-like design.

«A cylindrical containment bag constructed from carbon nanotubes would be extremely light relative to the mass of the asteroid rubble and the habitat, yet strong enough to hold everything together,» said study co-author Peter Miklavcic, a doctoral candidate in mechanical engineering.

Spinning an asteroid would cause its rubble to break apart, expanding the bag and creating a layer of rock against it. That layer would provide radiation shielding for a colony inside the cylinder while the continued spin would create artificial gravity.

It sounds far-fetched, but Frank said the technologies and engineering behind the asteroid city technically obey the laws of physics. «Based on our calculations, a 300-meter-diameter asteroid just a few football fields across could be expanded into a cylindrical space habitat with about 22 square miles of living area,» Frank said. «That’s roughly the size of Manhattan.»

Of course, bagging and spinning an asteroid wouldn’t be simple. The researchers suggest using solar-powered rubble cannons to get the spin going. There’s also the matter of constructing a human-safe colony on the interior, but we can leave those challenges for the future.

Sci-fi writers have long envisioned life on asteroids. The paper provides a new way of thinking through that possibility in a way that could protect human occupants and make them feel more at home. It’s a good companion piece to another recent space thought experiment that offered up a plan for building a «forest bubble» on Mars.

My imagination is now taking me from my cozy quarters inside an asteroid to a vacation destination in a Martian nature reserve. This may not be relegated to the realm of sci-fi forever. «Space cities might seem like a fantasy now,» Frank said, «but history shows that a century or so of technological progress can make impossible things possible.»

Technologies

Today’s NYT Strands Hints, Answers and Help for Nov. 28 #635

Here are hints and answers for the NYT Strands puzzle for Nov. 28, No. 635.

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 pretty tricky. If you’re not familiar with certain superstitious beliefs, you might not find all the answers. And some of the answers are difficult 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: If all else fails…

If that doesn’t help you, here’s a clue: Don’t tell, it won’t come true.

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:

GLUB, RATS, TARN, DALE, FONT, FOUNT, LASH

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:

DANDELION, STAR, COIN, FOUNTAIN, LADYBUG, EYELASH

Today’s Strands spangram

Today’s Strands spangram is MAKEAWISH. To find it, start with the M that’s three letters down on the far right, and wind backwards.

Technologies

Today’s NYT Connections Hints, Answers and Help for Nov. 28, #901

Here are some hints and the answers for the NYT Connections puzzle for Nov. 28, #901.

Looking for the most recent 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, Connections: Sports Edition and Strands puzzles.

Today’s NYT Connections puzzle is kind of tough. If you need help sorting the answers into groups, you’re in the right place. Read on for clues and today’s Connections answers.

The Times now has a Connections Bot, like the one for Wordle. Go there after you play to receive a numeric score and to have the program analyze your answers. Players who are registered with the Times Games section can now nerd out by following their progress, including the number of puzzles completed, win rate, number of times they nabbed a perfect score and their win streak.

Read more: Hints, Tips and Strategies to Help You Win at NYT Connections Every Time

Hints for today’s Connections groups

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

Yellow group hint: Appropriate.

Green group hint: I win!

Blue group hint: Musical instrument.

Purple group hint: Time to talk.

Answers for today’s Connections groups

Yellow group: Fitting.

Green group: Achieve victory over.

Blue group: Parts of an electric guitar.

Purple group: Phonetic elements of speech.

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

What are today’s Connections answers?

The yellow words in today’s Connections

The theme is fitting. The four answers are fair, just, proper and right.

The green words in today’s Connections

The theme is achieve victory over. The four answers are beat, best, take and worst.

The blue words in today’s Connections

The theme is parts of an electric guitar. The four answers are fret, peg, pickup and string.

The purple words in today’s Connections

The theme is phonetic elements of speech. The four answers are intonation, loudness, rhythm and stress.

Technologies

Anker’s New MagSafe Car Mount Keeps Your Phone Cool While Charging, and It’s 30% Off for Black Friday

Get wired-like charging speeds and MagSafe compatibility with Anker’s wireless car charging bundle for $62.99.

Black Friday is the best time of the year to upgrade the little essentials that make your everyday tech life more pleasant. I’ve found the perfect deal to amp up the phone charging setup in your car. This Anker MagSafe wireless car charging bundle is 30% off for the holidays, and it gives your iPhone a fast and steady way to power up while you navigate. It delivers up to 25-watt wireless charging speeds and with onboard active cooling, your phone stays comfortable to the touch.

Get it now for $62.99 verses the list price of $89.99.

What sets this charger apart is that its performance and cooling tech is built into a surprisingly compact package. The stand uses an ultra-strong Qi2 magnetic lock to keep your phone secure through bumps and turns. You can even tilt the mount and switch between portrait and landscape modes for navigation without blocking the view. The bundle has everything you need to get started including a 60-watt dual-USB-C charger, an adequately long USB-C cable, and cable organizers for a clean setup. Anker also includes a two-year warranty for peace of mind.

If you are getting your car prepped up for driving to a holiday vacation or just need a faster charging mount for your daily commute, this deal makes a lot of sense. CNET’s experts are also tracking more Black Friday and Cyber Monday picks across Apple products, headphones, and more, so you can score more savings before the sales season wraps up.

MOBILE DEALS OF THE WEEK

iPhone 17 Pro on Us With Any Condition Trade-in and Qualifying Plan
Google Pixel 10 Pro 128GB Unlocked Phone (Obsidian):

$749 (save $250)
Samsung Galaxy S25 FE 128GB Unlocked Phone (JetBlack):

$475 (save $175)
Google Pixel 9 128GB Unlocked Phone (Obsidian):

$499 (save $300)
Samsung Galaxy S25 Ultra 256GB Unlocked AI Phone (Titanium Black):

$900 (save $400)

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

Why this deal matters

A high quality charger is a great addition to any car to speedily top up your phone on the go. You will especially want to look out for options from a top-tier brand like Anker for its fast charging speeds and reliability. This Black Friday deal is an excellent opportunity to save big on a staple car accessory. With holiday shopping heating up and tech accessories being one of the most popular categories, we expect the deal to sell out quick. So don’t wait too long before jumping on it.

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