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Submission + - It's Official: Scientists Confirmed What Is Inside Our Moon (sciencealert.com) 1

alternative_right writes: A thorough investigation published in May 2023 found that the inner core of the Moon is, in fact, a solid ball with a density similar to that of iron.

To figure it out once and for all, Briaud and his colleagues collected data from space missions and lunar laser-ranging experiments to compile a profile of various lunar characteristics. These include the degree of its deformation by its gravitational interaction with Earth, the variation in its distance from Earth, and its density.

Comment Raises hand (Score 1) 82

Robinhood Markets is betting its Gen Z and millennial clientele are as eager to send out for delivery of a wad of cash ...

Um... Aren't the younger generations more prone to using electronic payments *rather* than cash?

Gen Z and the Future of Payments: Cards, Cash, and the Shift to Digital

See how Gen Z is transforming payments with a strong preference for digital wallets, contactless cards, and mobile payments over cash.

2024 Diary of Consumer Payment Choice (article has nice graph of payment types 2016-2023)

The findings also show a growing generational divide among those using cash versus electronic payments. Consumers younger than age 55 used cash for just 12% of payments in 2023, compared to 22% for those age 55 and older. Notably, for the first time in Diary history, cash was not the most-used instrument for smaller-value payments of $25 or less.

Google: younger generations cash vs electronic payment

Comment Re:Something to watch inbetween (Score 1) 58

The second movie, Aliens, also didn't have the mood of the first movie, yet was still one of the best movies ever made (IMHO! of course). I don't think the feel of the original is necessary in sequels, and might even be so hard to recreate that it's borderline hubris to try.

I'll probably watch it .. when I feel like doing nothing and thinking the presence of the xenomorph is a coincidence.

I think that is the best attitude one can take. The "domestication" of the xeno is the weakest part of this TV series, but OTOH, the inclusion of all the new monsters is part of what makes A:E so fun. The classic xeno is just one monster among many, now.

There are so many horrible ways to die. Show us more of them, Noah! ;-)

Submission + - A potential quantum leap (harvard.edu)

schwit1 writes: Harvard physicists unveil system to solve long-standing barrier to new generation of supercomputers

The dream of creating game-changing quantum computers — supermachines that encode information in single atoms rather than conventional bits — has been hampered by the formidable challenge known as quantum error correction.

In a paper published Monday in Nature, Harvard researchers demonstrated a new system capable of detecting and removing errors below a key performance threshold, potentially providing a workable solution to the problem.

"For the first time, we combined all essential elements for a scalable, error-corrected quantum computation in an integrated architecture," said Mikhail Lukin, co-director of the Quantum Science and Engineering Initiative, Joshua and Beth Friedman University Professor, and senior author of the new paper. "These experiments — by several measures the most advanced that have been done on any quantum platform to date — create the scientific foundation for practical large-scale quantum computation."

In the new paper, the team demonstrated a "fault tolerant" system using 448 atomic quantum bits manipulated with an intricate sequence of techniques to detect and correct errors.

The key mechanisms include physical entanglement, logical entanglement, logical magic, and entropy removal. For example, the system employs the trick of "quantum teleportation" — transferring the quantum state of one particle to another elsewhere without physical contact.

"There are still a lot of technical challenges remaining to get to very large-scale computer with millions of qubits, but this is the first time we have an architecture that is conceptually scalable," said lead author Dolev Bluvstein, Ph.D. '25, who did the research during his graduate studies at Harvard and is now an assistant professor at Caltech. "It's going to take a lot of effort and technical development, but it's becoming clear that we can build fault-tolerant quantum computers."

Submission + - Proton might recycle abandoned email addresses and the privacy risks are terrify (nerds.xyz)

BrianFagioli writes: Proton is floating a plan on Reddit that should unsettle anyone who values privacy. The company is considering recycling abandoned email addresses that were originally created by bots a decade ago. These addresses were never used, yet many of them are extremely common names that have silently collected misdirected emails, password reset attempts, and even entries in breach datasets. Handing those addresses to new owners today would mean that sensitive messages intended for completely different people could start landing in a strangerâ(TM)s inbox overnight.

Proton says itâ(TM)s just gathering feedback, but the fact that this made it far enough to ask the community is troubling. Releasing these long-abandoned addresses would create confusion, risk exposure of personal data, and undermine the trust users place in a privacy focused provider. Itâ(TM)s hard to see how Proton could justify taking a gamble with other peopleâ(TM)s digital identities like this.

Comment Re: Make them occasionally? (Score 1) 171

We Canadians eliminated the penny in 2013. But, like most other Canadians, I have a box of the damn things in the corner of my bedroom. Yeah, we don't stamp out new ones, but we still have lots of them kicking around.

Several articles have noted that pennies will remain exchangeable for the foreseeable future and legal currency forever. So people in the U.S. should be able to use them up / get rid of them (through payments) eventually.

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