#cosmology
The scale of the universe is just so astounding to me. Astronomy is a field I would never have the patience to do. Over the decades the amount of information we pick up about the universe is growing exponentially though. #physics #astronomy #cosmology https://arstechnica.com/science/2022/11/squid-galaxy-may-be-a-cosmic-accelerator-for-high-energy-cosmic-rays/
https://www.bitchute.com/video/71i8h1qXU0ud/
#CERN Dangers #Revealed! #Paperclip Nazis and #Cosmology #Cartel
#astronomy #cosmology #DarkMatter An article published in the journal "Monthly Notices of the Royal Astronomical Society" reports the results of a study of the distribution and morphology of the dwarf galaxies of the Fornax cluster which concludes that they are free of dark matter halos.
#astronomy #cosmology #DarkMatter An article published in the journal "Physical Review Letters" reports the results of an analysis of dark matter distribution around 1.5 million primordial galaxies. A team of researchers led by Hironao Miyatake of the Japanese University of Nagoya used observations conducted with the Subaru telescope and analyzed data collected by the Planck Surveyor space probe to detect distortion of the cosmic microwave background (CMB).
"Our most detailed observations of the distant Universe, from the Hubble eXtreme Deep Field, gave us an estimate of 170 billion galaxies. A theoretical calculation from a few years ago -- the first to account for galaxies too small, faint, and distant to be seen -- put the estimate far higher: at 2 trillion. But even that estimate is too low. There ought to be at least 6 trillion, and perhaps more like 20 trillion, galaxies."
"Just a short 20 years ago, we knew of approximately 50-to-60 galaxies within the Local Group."
"Even though the Local Group only extends for about 4-to-5 million light-years from our perspective within the Milky Way, we now know of somewhere upwards of 110 galaxies within our Local Group, largely bolstered by recent discoveries of ultra-faint galaxies that nevertheless consist of a self-contained population of stars that formed billions of years ago, held together by their own gravitational influence."
"There may be up to 100 small, low-mass galaxies for every Milky Way-like galaxy in the Universe."
There are more galaxies in the Universe than even Carl Sagan ever imagined
#astronomy #cosmology #GravitationalLensing #DarkMatter #Hubble An article published in the journal "The Monthly Notices of the Royal Astronomical Society" reports a solution to an astronomical mystery involving two #galaxies that appeared to be mirror images of each other and turned out to be two images of the same galaxy doubled by a gravitational lens.
https://english.tachyonbeam.com/2021/10/10/the-mystery-of-hamiltons-object-offers-clues-to-gravitational-lenses-and-dark-matter/
Sabine Hossenfelder: Backreaction: Can Physics Be Too Speculative?
<3 Sabine :)
https://backreaction.blogspot.com/2021/07/can-physics-be-too-speculative.html
S.Mandelker PhD: UFO Friends & Foes
#lawofone #alien #alien-abductions #cosmology #ufo
Here we have an analytic dissection of the important book on the UFO subject written by Trevor James.
Use your discernment and digression when listening to this, accept what you can and discard the rest.
Interesting information and highly applicable to our present situation.
S.Mandelker PhD: UFO Friends & Foes (1)
S.Mandelker PhD: UFO Friends & Foes (2)
S.Mandelker PhD: UFO Friends & Foes (3)
KiDS these days! They would do anything to prove us wrong.
#KiDS #cosmology #Λ-CDM #CDM #DarkMatter #MOND
KiDS
However, the new KiDS results show a discrepancy: the universe is nearly 10 percent more homogeneous than the standard model predicts.
Dr. Marika Asgari, from the University of Edinburgh, who co-led the analysis, calls the result "intriguing". "The standard model of Cosmology relies on rather mysterious physics that we call dark matter and dark energy. Scientists have to test this remarkable model in as many ways as possible, and that is exactly what we are doing."
The KiDS results may indicate small cracks in the standard model, just like another discrepancy in the expansion rate of the Universe, the so-called Hubble constant. Dr. Tilman Tröster (University of Edinburgh): "The question is whether these can be solved with a small adjustment, for example with a somewhat more complex behavior of dark matter than the simple hypothesis of totally inert 'cold dark matter'."
Leiden professor and KiDS lead Koen Kuijken cannot say whether this will eventually lead to a fundamentally different theory, for example replacing Einstein's General Theory of Relativity with a new one. "For now, I consciously try to stay away from possible theoretical interpretations, and focus on the measurements and how to make them as accurate as possible."
Hey everyone, I’m #newhere. I’m also technically a #gplusrefugee although, to be honest, I haven’t really been active on G+ for quite a while now, particularly since Google started messing with the platform a while back.
I’ll also make this my #introduction or #presentation thread, so it’s going to be a long one.
My main computer interests are #webdesign #dtp #computerart #computeranimation and #computermusic.
I’m a huge fan of the #opensource #libre aspect of computing, in particular #linux and #bsd. Specific interests in this area are #blender #gimp #inkscape #scribus #archlinux #debian #gentoolinux #manjarolinux #linuxmint #opensuse #sabayon #sabayonlinux #ubuntu #ubuntustudio #freebsd #netbsd and #openbsd.
I’m interested in #music of all kinds, in particular #dancemusic #housemusic #technomusic #trancemusic #soulmusic #discomusic #funkmusic #new-wave #post-punk #punk-rock #punkrock #rockandrollmusic and #rockmusic.
On the geek front, I love #animation #anime #atompunk #rocketpunk and #steampunk, #comics #comics-books and #graphicnovels, #sci-fi of all kinds on television and in film in particular #doctor-who #doctorwho and #star-trek #startrek. I also love reading #sciencefiction #sf #sff #sf&f literature of all kinds, as well as #fanzines based around either sf literature or television and movie sci-fi.
I’m also a big fan of #science, particularly #astronomy #astrophysics #cosmology #spacecraft #spaceflight #spaceexploration #spaceships #terraforming #palaeontology #palaeobotany #geology and #archeology.
Okay, enough of that. Why am I here?
As I’ve said, I haven’t been active on G+ for a while now. Likewise with Twitter. My current main social networking activity is still on Facebook, although I’m also trying to scale that back quite a bit, until it is eventually at a minimal level. I don’t really like Facebook (either as a social network or as a corporation), despite the fact that I use it almost every day. I merely tolerate it, as that is where “everybody” is hanging out. I don’t think I’ll ever be able to totally drop Facebook, as all my family, friends and most of my general contacts are on there (and are highly unlikely to move here or anywhere else), so I’m still kinda chained to that platform, although I’d like to be on there a lot less, and do my serious social networking on a superior open social platform.
In the wake of the recent disgraceful Facebook privacy/data scandal and the announced planned closure of Gplus, I’ve decided to go on the hunt for another social networking platform to make my permanent home, preferably something not owned by a corrupt mega-corporation. So far I haven’t tried very many in depth, three or four at most, and only given a cursory look at a number of others and dismissed them right away. To be honest, most of what’s out there doesn’t really grab me at all. I’ve set up an account on #MeWe, which I quite like (it resembles G+ quite a lot, but with less activity, for now at least), but there isn’t a lot of life on my feed over there yet. I also set up an account on #Minds a year or so ago, but I’ve never really used it.
There are other, similar networks out there, but all of them are pretty much variations on the same centralised theme, the new pretenders to the throne wanting to be the next big social networking thing and all of them claiming that our data and privacy will be totally safe in their hands, unlike with evil ol’ Facebook and Google. But they all say that, don’t they, at least until they get really big themselves, and turn into huge, greedy, profit-guzzling monsters? Remember how open Google was when it started out, built on open software, and all for the libre side of things? And look at them now, totally gone over to the Dark Side.
Many of these companies turn bad when they hit it big, even if they’re nice guys at the outset, starting off small and with the best of intentions. But once they get really big, it’s in the nature of big, powerful corporations to push the legal and ethical limits and throw their enormous weight around, all in the pursuit of profit. People mean nothing to them. We’re all nothing but numbers on a balance sheet from their perspective.
For a change, I’d really like to try something that is GENUINELY open and free, federated and decentralised, rather than owned by one company, without the claws of any huge corporations embedded deep in it, and not subject to the profit-driven whims of those corporations, abusing our data and privacy, changing stuff on us willy-nilly, getting rid of features and (in the case of Google) entire platforms, if they aren’t making them enough money, and dumping untold thousands of users and their online social networking communities on the scrapheap. I’ve really had enough of that crap. These companies do not DESERVE our support, and should be avoided like the plague.
So here I am, taking my first steps on Pluspora/Diaspora, with a truly free, open, decentralised network. I’ll try to stick with this one, as it’s a lot closer to my own philosophical leanings, although so far I’m finding it quite a culture shock, being more accustomed to the more rigidly structured platforms on Facebook and G+, with their Pages, Groups, Communities, etc. I guess I’ll eventually get used to the way there is none of that stuff on here and how absolutely everything is controlled by hashtags.
I’m genuinely attracted to the platform, as the #opensource #libre ethos is much closer to my own personal beliefs and sympathies. I can conceivably see myself using Pluspora/Diaspora at some point for all of my serious geek social networking, with Facebook relegated to keeping me in contact with family and friends. Only time will tell. :)
Introduction to Astronomy and Cosmology
We live in an era where it is possible to scientifically address many grand questions like, where the universe came from? Will it ever end? What is the universe is made of? How was the origin of life? But to embark on a journey in search of answers, we need an understanding of the basic foundations of Astrophysics and Cosmology.
Through this course, we will learn about the physics behind the universe, including the laws that govern the motion of planets, an understanding of origin and evolution of stars, and more.
This course is designed for people who would like to get a deeper understanding of astronomy. A reasonable graduate level background in mathematics and physics will be required to get the most out of this programme. (We will also get a chance to explore Priyadarshini planetarium at a whole new level.)
For Registration visit: http://www.aastro.in/
#astrophysics #astronomy #cosmology
Ahoy folks,
I’m an just an #undergraduate #student of #physics, trying to set myself up to flirt with #astrophysics, with a weakness for and in #blackholes, though occassionaly ogling at her sister, #cosmology, but again pulled back to stare at #quasars through only my minds eye. Did I mention that I am #newhere? If not then, I should also mention that #instrumentation and #electronics too share alarge bit of my metaphorical heart, and I just love #interfacing; what's better, than to connect physical reality to a beast a.k.a a #computer? Well #micro-controllers? I just started using an #arduino, actually an #arduinouno ( #arduinounor3 ), currently learning programing and using it for small, if not infinitesimally small, if you can call them that is, #electronicsprojects; I will soon push myself to use an #expeyes. Yeah, #microcontrollers interest me, but, as much as do #microprocessors, #8085 being one, with which I've played a little, though only through simulations. I needn't shy away from stating that I love #programing, having some knowledge in #C, #C++, #java, a little bit of #fortran. I'm learning to #code or #script, whichever way you like, #python, rather it's newborn sibling, #python3. It's no need to say that my #operatingsystem of choice, use and love is a of course, a popular distribution of #linux, i.e. #xubuntu; #xfce is my and my PC's best bond of love, along with #bash and #zsh. I love watching #movies, especially heart-moving #warfilms, thought provoking #darkcomedies, saluted #satires, divinely appetizing #epics, #neoreals, that leave you speechless, and some more and more to come; I so love #shortfilms that I do wish to someday, #make one. Well, you may call me an amateur, but I am a #photographer, #photography, being one of my passtime passions, #astrophotography, being one of my dreams, not having been able to capture a proper one yet. I have only taken part in a few well-known #photowalks, spread through social-media.
You know, like me or not, I strongly believe in #foss, especially #fosss, being a #privacy and #security concerned person, if not a #customization freak, an embryo of a #hacker and of course a #linuxlover. If that seems a bit commonplace, well it is, then I also happen to be a fan of a #marsrover; ah! #mars or Jasoom, call it what may, it's lovely. But lovelier are the #rovers that graze on it's surface. I so wish that I had a pet #quadcopter alongside my late pet #cat. Cool is the only word I can have for #robots; ah! #robotics, what a sweet art art thou. Though a little sweeter would be #cognition, whose daughter #ai is a sweet child, I wish was mine. Can #intelligence be #artificial? Or is it just another #random #oxymoron, that a #language is filled with, that #linguistics deals with? Or maybe I'm just writing a #microtale. But then, #microtales are so lovely. Be it in #english or #bengali, rather #bangla, or #hindi or #german; though for #deutsch I still need a dictionary. At least #scrabble and #hangman are still in english for me. But yes, I just happened to fall in love with #html5 and #markdown.