Physicist and professor at a school on the north side of Chicago. Black holes, quantum gravity, cosmology. Rocky Top, Tar Heel. Science, dogs, lake photos. Faves are spooky action at a distance, boosts are Lorentz transformations to another inertial frame. Opinions are mine, not my employer’s.
#Physics #BlackHoles #Gravity #SciComm #Dogs
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2024-05-11T15:36:49+02:00 Event JSON
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Last Notes npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees A true story. When I was in grad school I was in Steven Weinberg's research group. I was also the grader for his cosmology course, and sysadmin for the group's little network. So I spent a lot of time in Big Steve's office. He had two desks in there and both were disasters. One time I was trying to fix a problem on his ancient PC. I had to push a stack of papers out of the way, and there on the desk behind all the clutter was a Nobel Prize medal. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees As most physicists will tell you, a clean desk is a sure sign of a sick mind. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Besides the famous chalkboard photo, Ralph Morse also captured a close-up of Einstein's desk. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees And here is a better view of the state of the blackboard in Einstein's office when he passed away on April 18, 1955. The image appeared in LIFE magazine. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Albert Einstein passed away #OTD in 1955 due to complications from a ruptured abdominal aneurysm. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Less than two hours until Integrity makes its closest approach to the Moon. #Artemis npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees We pack a handful of folks into a tin can loaded with explosives. Their computers are running Windows and the ship's toilet is malfunctioning. We hurl them at a distant rock. Everything about where they are is trying to kill them. And it is sublimely beautiful, one of the greatest things we’ve done as a species. #Artemis npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Friends! Suppose you were going to be in Paris for 8 days this June, with a spouse and a 14yo. What are some lesser known or not obvious things you would plan to do? Any recommendations? I mean besides the standard stuff like the Louvre, Catacombs, etc. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees This was posted in a shorter format as a thread on Bluesky and it worked marvelously. One of the most innovative uses of the form that I’ve seen. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Astronaut, author, professional football player, and STEM educator Leland Melvin was born #OTD in 1964. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees "That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering…every saint and sinner in the history of our species lived there – on a mote of dust suspended in a sunbeam." npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Engineer and inventor Douglas Engelbart was born #OTD in 1925. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees If you can’t see the full headline in the preview card, here it is. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees I cannot stress enough that you should not do this. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Mac users: do you do the long-click on a word to pop up its definition? Do you also find the built-in dictionary to be a bit lackluster? npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees This is incredible. An MTV simulator with almost 30,000 videos, organized by decade along with special sections for Headbanger's Ball and Yo! MTV Raps. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees We can’t pay for USAid, scientific research, daycare, school lunches, social security, unemployment benefits, or healthcare, but apparently there’s no problem launching an illegal war that will cost US taxpayers billions of dollars and enrich all the grifters, goons, and ghouls in this administration. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Accidentally typed “shatbot” instead of “chatbot” and decided to cancel the autocorrect and just let that one escape into the wild. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees It is pretty wild that a news org (a “news” org) is running a piece that quotes loads of grok output but has no quotes from humans, other than a combative auto-reply to an email. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees I’m not sure what you mean? On my end, each one of these is a reply to the previous post. Does it look different to you, or am I misunderstanding? npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Astronomers were divided on the issue; many still subscribed to the idea that everything they saw was within our Milky Way. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees 101 years ago, #OTD in 1925, Edwin Hubble announced that Andromeda and other spiral nebulae were definitely separate galaxies outside the Milky Way, in a paper read to an AAS meeting by H.N. Russell. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees The transition from classical to quantum physics went about as smoothly as you would expect. Happy #QuantumDay! npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees That’s right, the factor of “k” that appears in the formula “S = k log W” — the formula engraved on Boltzmann’s memorial! — was actually introduced by Max Planck. Boltzmann expressed his results in terms of the ideal gas constant R. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Something that isn’t as widely known is that “h” is not the only fundamental constant that was introduced during Planck’s presentation to the German Physical Society #OTD in 1900! npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees The results of Planck’s December 14th lecture were submitted to Annalen der Physik a few weeks later, on January 7th, and published not long after that. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Planck’s hypothesis was in fact a deep statement about the nature of Nature. Electromagnetic adiation of frequency f comes in discrete chunks of energy E=hf. It's not an artifact of a complicated interaction with matter. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees This sequence of events was a not uncommon narrative in the transformative years of late 19th and early 20th century physics. It would go something like this: npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Here's a great APS Landmarks entry where you can read more about Compton Scattering and the reality of photons. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Many physicists remained skeptical. But Arthur Compton’s 1923 explanation of X-rays scattering off electrons was near-incontrovertible evidence that quanta were real. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees If so, it was a trick that *worked*. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Planck’s quantum hypothesis would revolutionize physics, but he initially thought it wasn’t real. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Happy #QuantumDay to all who celebrate! npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees If you think you recognize this woman, no you don't. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees "I, at any rate, am convinced that He is not playing at dice." npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees I’m not an expert, but I’ve seen this paper described as an important justification for claims about the safety of Roundup. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Lumping them together as “AI” gives readers the impression that a single class of tool is discerning novel protein structures, teasing subtle patterns out of mountains of LHC data, writing a student’s History 101 paper for them, and arguing that a ketamine-addled billionaire could post up Shaq in his prime. No. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Machine learning (umbrella term, I know) is a useful, sometimes transformative tool in the hands of trained researchers who understand how to deploy it and critically assess the results. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Journalist challenge: Use “Machine Learning” when you mean machine learning and “LLM” when you mean LLM. Ditch “AI” as a catch-all term, it’s not useful for readers and it helps companies trying to confuse the public by obscuring the roles played by different technologies. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees “But I am a hater, which is a kind of integrity. It means I am willing to disagree with anyone, even if it is rude. “But I only use it to–” “Actually if you just—” “The new models–” “I was making fun–” Stop. You’re embarrassing yourself. I am embarrassed for you.” npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees There is no scientific basis for this claim. This is hype cycle escalation and rhetorical sleight of hand. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Good evening. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees I commonly use an owl with my keyboard so needless to say I was both hurt and offended when the captcha denied my response. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Take all that energy use projected for “AI” data centers in the US next year, and that’s about how much work you’d have to do to accelerate a 100kg space probe up to 1/3 the speed of light. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Astronomer Ejnar Hertzsprung was born #OTD in 1873. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees There’s a big story in Science News on the 100th anniversary of Cecilia Payne-Gaposchkin’s remarkable dissertation. Here’s a thread about her that I wrote a few years ago! npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees This morning, during some chaos, this zipped by on one of my feeds. Maybe it was here? Maybe it was BlueSky? Hard to overstate how much this made my day. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Lolll. Lmao, even. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Slaughterhouse-Two-point-Five npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees I mean, come on. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees For everyone who asked, here’s the full section from the syllabus. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Welp, posted this late last night then logged in and found it’d been around the world and back. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees My students are often surprised to learn that LLMs aren’t answering their questions. Rather, an LLM answers the question “what would a reply to this look like?” It’s one of the first things I explain in the “Should I use LLMs?” portion of my syllabus. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Anyway, I’m back in Tennessee this weekend. Was planning on pulling a few more records to take back — there are so many I’d love to give a good home to — when I realized I had *missed* a closet last time I was down here. At least another 300 records to sort through. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees I just pulled a fraction of really good ones from the six or seven hundred I sorted through. It’s an exquisite collection. They aren’t audiophiles, just music lovers. (To be fair, they always had a great hi-fi.) npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees A few months ago, while visiting family in Tennessee, I started digging through my parents’ substantial vinyl collection. They do not listen to them — the records were just sitting in closets and a spare room, in record crates. I pulled a bunch of records to take back to Chicago. It was quite a haul. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees This meeting could have been an email hacked by the Russians and leaked before a big election npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Yesterday morning I was explaining Ozzy Osbourne to the kids in my daughter’s carpool, doing the whole RIP tour of Black Sabbath and his solo stuff, and one of them nodded solemnly and said “Fly high, metal grandpa.” npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Look, speaking as a physicist, it is hard for me to put into words how batshit crazy this is. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees [Arby’s CEO pointing to the bottom layer on a chart of Maslow’s hierarchy of needs] npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees My brother in Christ, the guy was not “deeply religious,” he was in a cult that teaches demons are real and constantly physically attacking people like in an episode of Buffy. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees But like, not religious enough to not murder people. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Caught the dog reading again. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees [random, interesting to me] npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Subrahmanyan Chandrasekhar was born #OTD in 1910. He established an upper limit on the mass of stable white dwarf stars, and made numerous contributions to astrophysics and relativity. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees 100k new users is nothing compared to all the Brazil signups a few months ago. This sounds more like a denial of service attack. (Which Elon would definitely do.) npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees One minute your kid is four and they are handing you a plate of batter with a candle in it saying “I made pancakes,” and the next thing you know they are twelve and they found a recipe on an Italian cooking blog and that’s the third course of the anniversary meal they made for you and your spouse. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Absolutely wild that my mom is getting these in East Tennessee. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Meanwhile, my mom is getting pictures down in *East Tennessee* npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Chicago! There’s aurora! Even through all the light pollution! npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Oh nice, I was hoping for some math that went a little beyond the typical pop fare. This looks great. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Science friends! If you were stocking the science section of a book store, what popular (as opposed to academic) titles would you put on the shelves? What books, in your opinion, are absolute essentials? npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Oh, very neat: a library of open access academic books. The section on Physics has a few classics, as well as some nice new books. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees In the interest of fairness (but against my better judgement) I read Altman's "essay" linked in the article. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees If you are okay installing a script manager for your browser, and you use the gmail web interface, here is a userscript that renders TeX in your emails. Anything supported by KaTeX works, apparently. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Hard to believe the tech companies weren’t being completely honest with us. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees It's not like we (society) talked about this and decided we'd sacrifice ground-based astronomy in exchange for internet access in remote areas. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees But I was assured that this was a v0.1 problem that would be fixed before more satellites were sent into orbit 🙄 npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees TIL that the bass and falsetto parts in the second verse of "Tempted" by The Squeeze, are sung by Elvis Costello. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Make him sell off SpaceX and Starlink, he can plug the Twitter hole with the proceeds. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Some people will complain that a magazine or journal or professional society shouldn't endorse a candidate. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Sign this Resistbot petition demanding that elected leaders do something about US reliance on space and telecom infrastructure controlled by Elon Musk. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees He has near total control over essential infrastructure, he has already used it to interfere in foreign policy, and he is stuck in the same right wing intel radicalization spiral as every gamer gather who ever tried to live out a revenge fantasy. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Letting this guy be in charge of starlink and spacex is a national security risk. He’s radicalized, erratic, and dangerous. Nationalize both companies and boot him. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees For fans of Terry Pratchett, or the Pratchett-curious, there's a Humble Bundle right now with 35 Discworld books (epubs through Kobo) for around $20. Pay more to donate more to charity. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Good evening. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Good morning. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Well, it finally happened. One of the kid’s friends sent her a link to a YouTube video featuring this tweet and asked “Is that you??” npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Physicist Ernest Rutherford was born in Brightwater, New Zealand #OTD in 1871. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees It’s not a free trial if you have to provide a credit card number. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees In Texas, being paid to not mine bitcoin is more profitable than mining bitcoin. This has moved from a simple grift to hostage-taking. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Good evening. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees 🚨 Someone arranged for a Mariachi at our block party 🚨 npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Look at these beauties. Pulled from my parents’ garage last year, belonged to my grandpa before that. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees In retrospect, we probably needed to ask some follow up questions when the kid and her friend said they were “making a salad.” npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Lesser known: Before NASA and the Apollo program, Margaret Hamilton worked with mathematician and meteorologist Edward Lorenz. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees The guy who couldn’t run a livestream on Twitter last night, wants to be in charge of your oxygen on Mars. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Hmm, so these sophisticated hackers penetrate the campaign’s systems, extract sensitive documents, and then… turn them over to a publication run by an ardent Trump supporter. Got it. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Happy birthday to Henrietta Swan Leavitt, who gave us the means to measure our Universe. npub188wrkmlj6ayxlhvy4qjxy8tvzxk053na43fuc23lp8d72d7hqcvqf73emc Robert McNees Harlow Shapley, director of the Harvard Observatory, wrote back to inform Mittag-Leffler that Henrietta had passed away.
