swansont

If we can easily detect them why was the article a revelation about finding missing matter? Missing implies not detected.

I don’t insist on formality but if you’re going to use a title, it’s Dr. Gravity is gravity. Gravity from a non-BH is the same as from a non-BH, and expansion doesn’t happen where you have a gravitationally bound system. Any part of the universe close to a BH isn’t experiencing expansion anyway, so how can there be a change to experience? IOW, the supermassive BH at the center of the Milky Way has no effect on nearby expansion, because there is none. The expansion happens far away in intergalactic space where gravity is very weak, seen with distant galaxies not bound to our local group.

I misread something, making my response moot, so I deleted the post

A point which a number of people have already made Yup. But most are, and they tend to be ones that strike when you’re older. You have the opportunity to catch them because you didn’t have half of the population dying of infectious diseases when they were kids. Absolutely nobody has said otherwise. Here’s a little math problem: Each family has 4 kids. One dies at 1, another at 4. One lives to 55, the other to 60. What’s the life expectancy? As I hope you can conclude, that number can in no way suggest that nobody lives to 50 or beyond.

Why would anyone think that? The moon is occulted by Jupiter. It appears at 1 and, as I noted, even appearing at 8 or 9 would have minimal effect on the experiment. In physics we quantify things. Do the math. Io is about 350,000 km above the surface.Jupiter’s radius is about 70,000 km. i.e. the light travel time from surface to its moon is about 1 second

What does this have to do with anything?

Moderator NoteYou can upload and display pictures, which is preferable to a link. But using a link shortener is a no-no, since nobody can tell what the destination is An incorrect location of the moon is, at worst, a small error in the calculation, which you are free to calculate. The important thing is the position of Jupiter relative to earth. Not sure what tortured logic is involved here. It doesn’t “need to be delayed” it is observed at a certain time. Anyway, we have many, many other measurements of the speed of light, and relativity, which incorporates issues of simultaneity, is a well-tested theory. You’re tilting at a windmill here.

Yes they do. But we’ve done a lot to reduce infectious diseases, and that’s one of the differences. You don’t have to go back all that far to see much, much higher infant mortality https://www.gapminder.org/data/documentation/gd005/ https://ourworldindata.org/child-mortality

Who is “we”? Not the people posting their screeds trying to sell their new physics, by the look of it.

Do you know what an anecdote is? And how averages work? (dying children has a big effect on average lifespan)

Probably not more. No need for that hypothesis. No modern medicine, which allows us to prevent or more effectively treat a lot of diseases. Reduced concept of what caused diseases, so fewer countermeasures were taken. Filth and unsanitary conditions. Lack of indoor plumbing.

A shared document? Really? You can’t link to the source, so we can see where we’re going? https://news.umich.edu/scientists-find-first-observational-evidence-linking-black-holes-to-dark-energy/ Not anything close to a theory. I don’t see any math, just some hand-waving. Expansion is speeding up. A black hole’s gravity is the same as a non-BH as long as you are outside the latter’s radius of the mass distribution, and expansion doesn’t happen in gravitationally bound systems, so I don’t see the “logic” here And I don’t see the connection to the UMich link, other than you appropriated the name

jv1 has moved from mod queue to a full ban. Fortunately, you were not subjected to the ramblings, but there was no improvement in post coherence or quality

And a 1900-era tenement? Did they have such infrastructure in their tiny apartment? I can imagine how much fun it was to lug that fuel up many flights of stairs. Cooking took a long time, so what if you lived alone? Working 12 hours in the Chicago stockyard or at some sweatshop (plus commuting time) would make that difficult. And my parallel universe must be imagining things like this https://www.chamoycitylimits.com/blogs/chamoy-blog/history-of-street-food-in-the-usa?

Interesting that AI trained on Newton’s laws couldn’t deduce the gravitation law when given orbit data Why “vibe physics” is the ultimate example of AI slop “But did the model take that leap, and discover Newton’s laws? Did it find the underlying foundational model? Or, perhaps even better, did it find a superior model to Newton’s? The answer, quite definitively, was no.” https://bigthink.com/starts-with-a-bang/vibe-physics-ai-slop/ Article points out how the chatbot aspect of LLMs are a problem. They aren’t going to tell you you’re wrong We’ve run across folks who insist an idea is theirs but an AI helped, but I think this is still a problem - any AI taints the idea.

I think it’s literally poetic license.

In a word, no. If you can’t or won’t follow our rules about posting content, we’re done here I do find it curious that when I Google on that title, I only get an AI summary, and a single link to a reddit post that won’t load because it’s from a suspended account But Zenodo doesn’t lend credibility, since we’ve had a spate of AI-generated content from posters linking to that site. It’s almost a red flag at this point, like a repository that has no threshold for what gets put there.

Moderator NoteOur rules require any material for discussion be posted here. Not via links or uploads.

I do; I like the idea of appointing one every 2 years and having a 26 year term (or every 4 years/36 year term if we stay at 9) so every president gets the same opportunity. (congress should add ethics oversight, too) The number justices hasn’t always been 9, and there are now more federal districts. We should expand the court and add representatives in the House to have closer to equal representation there.

A lot of issues are tied to poverty. One problem is that eating healthy isn’t the only issue; you need to consume enough calories, and unhealthy/junk food is often laden with them. Eating fruits and vegetables doesn’t matter as much - if you’re not getting ~2000 calories a day, you’re eventually going to starve. So you want to maximize calories per dollar.

As Ben Franklin said (or variations from others) "democracy is two wolves and a lamb deciding on what's for dinner" i.e. you must have rights of the minority robustly in place. The founding fathers anticipated someone like Trump becoming president, and put in place safeguards against the possibility, but they did not anticipate that a majority of congress and the supreme court would be willing, if not eager, accomplices.

I saw something recently that pointed out that widespread cooking at home for city dwellers is a fairly recent development. People used to regularly go to street vendors or inns/pubs to eat. The infrastructure to cook in city dwellings, for anyone who’s not upper-crust, is more or less a 20th century development (i.e. having gas and/or electricity available)

Fascism is already here. Part of the problem is people framing this as something that might happen in the future. The fix starts with throwing the fascists out of office.

Why do you think that? How would seawater shorten lifespan? In addition, not everyone has ready access to perishables on a timely basis, and not everyone can do extensive food preparation. Doesn’t do any good to buy food that will rot before your next trip to the store, or something you can’t cook up.

So G is smaller in intergalactic space. Seems like that would have testable consequences. With gravitational waves, for instance. But how does it get to be smaller there, but is bigger when mass is greater? Why wouldn’t it be different in regions with different amount of mass? It’s not like there’s no mass at all in intergalactic space. What’s the threshold that activates gravity? And…nearly constant? How did the small-G voids appear in the first place, if you start out with a more-or-less uniform distribution of mass and energy? Shouldn’t they all be activated? How do they de-activate? I don’t think it predicts that at all. If you didn’t know about the distribution beforehand, and that expansion was occurring, I’m not convinced it would pop out of the equations. It’s very ad-hoc in that regard.