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 Mini Crossword Answers for Wednesday, Jan. 28

Here are the answers for The New York Times Mini Crossword for Jan. 28.

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

Need some help with today’s Mini Crossword? Read on for all the answers. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get to those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: Remove from a position of power
Answer: OUST

5A clue: Not cool
Answer: UNHIP

7A clue: «Fine, see if ___!»
Answer: ICARE

8A clue: Kind of bored
Answer: JADED

9A clue: Primatologist’s subjects
Answer: APES

Mini down clues and answers

1D clue: Kind of board
Answer: OUIJA

2D clue: Prepare to use, as a pen
Answer: UNCAP

3D clue: Desirable place to sit on a hot day
Answer: SHADE

4D clue: Pair on a bicycle
Answer: TIRES

6D clue: ___ Xing (street sign)
Answer: PED

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

Technologies

Today’s NYT Connections: Sports Edition Hints and Answers for Jan. 28, #492

Here are hints and the answers for the NYT Connections: Sports Edition puzzle for Jan. 28, No. 492.

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 tough one. 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’s own 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: Stats about an athlete.

Green group hint: Where to watch games.

Blue group hint: There used to be a ballpark.

Purple group hint: Names are hidden in these words.

Answers for today’s Connections: Sports Edition groups

Yellow group: Player bio information.

Green group: Sports streamers.

Blue group: Former MLB ballparks.

Purple group: Ends in a Hall of Fame QB.

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

What are today’s Connections: Sports Edition answers?

The yellow words in today’s Connections

The theme is player bio information. The four answers are alma mater, height, number and position.

The green words in today’s Connections

The theme is sports streamers. The four answers are Netflix, Paramount, Peacock and Prime.

The blue words in today’s Connections

The theme is former MLB ballparks. The four answers are Ebbets, Kingdome, Three Rivers and Tiger.

The purple words in today’s Connections

The theme is ends in a Hall of Fame QB. The four answers are forewarner, Harbaugh, honeymoon and outmanning.

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

Technologies

Google Rolls Out Expanded Theft Protection Features for Android Devices

The latest Android security update makes it harder for thieves to break into stolen phones, with stronger biometric requirements and smarter lockouts.

Google on Tuesday announced a significant update to its Android theft-protection arsenal, introducing new tools and settings aimed at making stolen smartphones harder for criminals to access and exploit. The updates, detailed on Google’s official security blog, build on Android’s existing protections and add both stronger defenses and more flexible user controls.

Smartphones carry your most sensitive data, from banking apps to personal photos, and losing your device to theft can quickly escalate into identity and financial fraud. To counter that threat, Google is layering multiple protective features that work before, during and after a theft.

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

At the center of the update is a revamped Failed Authentication Lock. Previously introduced in Android 15, this feature now gets its own toggle in Android 16 settings, letting you decide whether your phone should automatically lock itself after repeated incorrect PIN or biometric attempts. This gives you more control over how aggressively your phone defends against brute-force guessing without weakening security.

Google is also beefing up biometric security across the platform. A feature called Identity Check, originally rolled out in earlier Android versions, has been broadened to apply to all apps and services that use Android’s Biometric Prompt — the pop-up that asks for your fingerprint or face to confirm it’s really you — including third-party banking apps and password managers. This means that even if a thief somehow bypasses your lock screen, they’ll face an additional biometric barrier before accessing sensitive apps.

On the recovery side, Google improved Remote Lock, a tool that allows you to lock a lost or stolen device from a web browser by entering a verified phone number. The company added an optional security challenge to ensure only the legitimate owner can initiate a remote lock, an important safeguard against misuse.

And finally, in a notable regional rollout, Google said it is now enabling both Theft Detection Lock and Remote Lock by default on new Android device activations in Brazil, a market where phone theft rates are comparatively high. Theft Detection Lock uses on-device AI to detect sudden movements consistent with a snatch-and-run theft, automatically locking the screen to block immediate access to data.

With stolen phones often used to access bank accounts and personal data, Google says these updates are meant to keep a single theft from turning into a much bigger problem.