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

RFK Jr. Announces All Americans Need Health Tracking Devices: Here Are the Pros and Cons

The US Health Secretary plans a huge campaign to encourage health wearables: CNET knows exactly the kind of devices he’s talking about, and why accuracy may be a problem.

Many Americans already track health statistics like heart rate and sleep cycles on app-connected accessories. Now the federal government wants to jump in. On June 24, Health Secretary Robert F. Kennedy Jr. announced «one of the largest HHS campaigns in history» to encourage the use of wearables to track health conditions, a trend CNET has recently covered.

Kennedy is referring to the many different bands, watches and even clothes that use technology to track human vital signs. CNET’s reviewers have spent years testing devices like these, seeing how rings monitor health signs, straps track your heart health and the right devices lead to better sleep.

The latest version of the Apple Watch, for example, has sensors designed to detect heart rate, heart rhythm issues, falls, sleep health, sleep apnea, temperature, breathing rate and more. The newest Oura Ring can track sleep patterns, menstrual cycles, temperature, heart rate and other health details.

«We think that wearables are a key to the MAHA agenda, Making America Healthy Again ,» Kennedy told the Subcommittee on Health during its budget meeting. «My vision is that every American is wearing a wearable within four years … they can see what food is doing to their glucose levels, their heart rates and a number of other metrics as they eat it.»

Kennedy also tweeted that «wearables put the power of health back in the hands of the American people.»

«Wearables,» however, is a broad term encompassing everything from fitness devices that count steps to sleep trackers you wear at night. And consumer devices can’t easily replace monitoring solutions offered by medical professionals.

For example, CNET has covered research indicating that even the best-in-class Apple Watch struggles with accuracy from metrics like steps to heart rate. Another study from California State Polytechnic University has shown that fitness-related Fitbit trackers show high inaccuracies as well. In fact, that research was used in a related Fitbit lawsuit.

Speaking of glucose monitors, Kennedy isn’t the only White House official with an interest in such health sensors. The administration’s nominee for surgeon general, Dr. Casey Means, co-founded glucose-monitoring company Levels and sells a monitoring app as well as other wellness products.

Finally, CNET wellness experts remind everyone that wearables aren’t always a good fit. Those suffering from eating disorders or body image issues should always talk to an expert before using wearables, as they can exacerbate certain issues or lead to a unhelpful outlook.

The US Department of Health and Human Services did not immediately respond to a request for comment.

Technologies

What’s Included in Xbox Game Pass? Here’s Everything You Need to Know

Check out the pros and cons of each Game Pass tier, and how much each costs.

Editors’ Note: Xbox Game Pass Ultimate offers a slew of benefits, including a massive game library, diverse device support and both PC and console games. Nifty features like the ability to play on smart TVs, phones, tablets and PCs — not just consoles — make this a convenient gaming subscription service for a wide range of people. Xbox Game Pass Ultimate costs less than the price of a new game each month, yet gives access to hundreds of titles, which is why it earned a CNET Editors’ Choice Award. The original article follows.

New AAA video games used to cost $50 apiece, but it’s not unusual to see a similar game cost $70 now. That price might make you pause before you buy the game, but with an Xbox Game Pass subscription, you could play a brand-new game, and others, for a fraction of the price.

Microsoft launched Game Pass in 2017, and since then, the gaming service has grown to be one of the best values for gamers. All Game Pass plans offer member discounts for non-Game Pass titles and other perks, but figuring out which plan is right for you can be difficult.

That choice can be especially tough after Microsoft removed its Game Pass Console plan and replaced it with Game Pass Standard. The company also increased the price of Game Pass Ultimate from $17 to $20 a month.

I’ve covered the service in the past, including future releases and whether Game Pass Ultimate will save you money compared with buying single games. And with all the new titles Microsoft announced would be joining the service as Day 1 releases, like the upcoming Doom: The Dark Ages, you might be wondering what the difference is between different Game Pass plans.

Here’s what you need to know about the Game Pass plans so you can decide which one is right for your needs.

Xbox Game Pass tiers

	Game Pass Core	Game Pass PC	Game Pass Standard	Game Pass Ultimate
Day 1 releases	No	Yes	No	Yes
PC games	No	Yes	No	Yes
Online multiplayer	Yes	Yes	Yes	Yes
EA Play	No	Yes	No	Yes
Cloud Gaming	No	Yes (select games via GeForce Now Ultimate)	No	Yes (via Xbox Cloud Gaming and select games via GeForce Now Ultimate)
Monthly price	$10	$12	$15	$20