Discover and read the best of Twitter Threads about #cosmology

Most recents (24)

“Whence is it that you found the truth, o, Plato? … I know your teachers, although you seek to conceal them: you learned geometry from the Egyptians, astronomy from the Babylonians, you received pious invocations from the Thracians; the Assyrians taught you a great deal. > 1/2
>And, to the extent the laws [you expound] are true and glorify God, you have benefited yourself from the Jews.”

—Clement of Alexandria, Protrepticus 2/2
Klement adds that Plato took up the doctrine of the immortal soul from Pythagoras, who in turn had appropriated this from the Egyptians.
Read 173 tweets
Origen deplored Plato, who took pains to learn the languages of Easterners, thus, ‘instead of remaining a Greek’, he opted for ‘behaving as a barbarian in order to benefit Egyptians & Syrians’, wherefore he ended up saying nothing helpful both to those barbarians & to the Greeks.
#Porphyry did not see Plato as an authority, not to mention his loathing of Socrates.
Aeneas of Gaza writes with contempt of Plato having misused the knowledge he received from the Egyptians and introducing transmigration of souls to animals, unlike ‘Plotinus, Harpocration, Boethus, and Numenius.’
Read 45 tweets
@roydherbert For those interested in #Cosmology, this thread is a response to the #JWST observation of distant galaxies deemed by their large size to have been created before the Big Bang. We analyze this in light of current assumptions of #physics.
A01/
Physics is a study of rates of material change, of observed occurrence of events, of objects in motion. Celestial bodies appear to move across the sky, from day to night. A rock thrown up into the air comes back down to the ground. Photons interact in space over time.
A02/
Success in this study is historically evidenced through the methodical observation of nature, ascendent use of axiomatic over empirical logic in mathematical modeling, and rigor in the validation of that modeling in its application to industry as developed technology.
A03/
Read 26 tweets
We look at this Son and see the God who cannot be seen. We look at this Son and see God’s original purpose in everything created. For everything, absolutely everything, above and below, visible and invisible, rank after rank after rank of angels—
everything got started in him and finds its purpose in him. He was there before any of it came into existence and holds it all together right up to this moment. And when it comes to the church, he organizes and holds it together, like a head does a body. —st Paul
#Anaxagorean
He was supreme in the beginning and—leading the resurrection parade—he is supreme in the end. From beginning to end he’s there, towering far above everything, everyone. So spacious is he, so expansive, that everything of God finds its proper place in him without crowding./st Paul
Read 5 tweets
What's common between India's greatest scientists - CV Raman, Acharya Prafulla Chandra Roy, Megnad Saha, Acharya Jagadish Chandra Bose, Satyendranath Bose, P.C Mahalonobis et al. They went to #CalcuttaUniversity. Who proposed setting up India's first autonomous University?..(1/2)
(2/n) #RajaJoykrishnaMukherjee. Way before #NobelPrize was envisoned in early 1900s, in the mid 1800 this very man had expressed his interest to set up a global award in Physics, Chemistry, Biology, Mathematics & Philosophy. It was called Joykrishna Gold award and the 1st.....
(3/n) recipient was Sir James Jeans, the father of #British #Cosmology. Although the vision of this award was set by Joykrishna Mukherjee, it was actually made operational much later by his son #RajaPearyMohanMukherjee. Joykrishna in the mid 1800s envisioned that India should...
Read 7 tweets
📌📌📌
#GANN ’s System of #Cosmology Behind the Markets

1) "The Law of Vibration is the name given by W. D. Gann to his system of science which underlies market influence. This is truly a system of cosmology, or as he said Natural Science,

#astrology #astrotrader

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2) the name by which general science was called in the late 1800’s when Gann first developed his theories. The difference between those times and now was that scientests 130 years ago were more generalists rather than specializsts, so were more qualified

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3) to understand the interaction of different systems of science. That made them better capable of seeing relatinships between astronomy and biology, or psychology and led them to see understanding of relatioships that have been all but lost today. This subject includes many

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Read 5 tweets
According to Vedic Principals, world consists of Agni i.e., fire or heat and Soma (Varun) i.e. water, 12 forms of Sun (Surya – aditya ) and is the soul of all for those are being and for those who aren’t living being.

#cosmology #elements
Nature controls by Indra who is most powerful god and who kills Vritra, the symbol of cloud to free waters. Vritra means one who covers and is derived from the root vri, to cover.  According to R.R.M. Roy the main force of expansion in the Vedic cosmology is Indra,
and his chief adversary, the main force of contraction, is Vritra and Maruts are Indra’s associates.

Vedic seers pray boldly to these natural forces and aspects for bestowing plenty and prosperity on them.
Read 21 tweets
Daily Bookmarks to GAVNet 11/17/2021 greeneracresvaluenetwork.wordpress.com/2021/11/17/dai…
Rarest mammal in North America found in Colorado garage, ‘looking for a new home’

usatoday.com/story/news/nat…

#EndangeredSpecies #BlackFootedFerrets #restoration
Read 8 tweets
Daily Bookmarks to GAVNet 05/31/2021 greeneracresvaluenetwork.wordpress.com/2021/05/31/dai…
Declining biodiversity in wild Amazon fisheries threatens human diet

phys.org/news/2021-05-d…

#biodiversity #amazon #fisheries #diet #consequences
The Covid-19 Lab Leak Theory Is a Tale of Weaponized Uncertainty

wired.com/story/covid-19…

#COVID19 #origin #wuhan #LabLeak #weaponization #uncertainty
Read 10 tweets
Daily Bookmarks to GAVNet 05/15/2021 greeneracresvaluenetwork.wordpress.com/2021/05/15/dai…
Non-hospitalized COVID-19 patients: Low-risk of serious long-term effects, but more visits to doctor

medicalxpress.com/news/2021-05-n…

#COVID19 #LongHaulers #risk
Read 10 tweets
Daily Bookmarks to GAVNet 01/12/2021 greeneracresvaluenetwork.wordpress.com/2021/01/12/dai…
Math Can Help In Deciding How To Distribute The Vaccine : NPR

npr.org/2021/01/10/955…

#vaccine
Crisis In Cosmology Gets Worse

forbes.com/sites/drdonlin…

#cosmology #crisis
Read 8 tweets
Daily Bookmarks to GAVNet 10/31/2020 greeneracresvaluenetwork.wordpress.com/2020/10/31/dai…
Nothing Will Fundamentally Change: Notes From The Edge Of The Narrative Matrix

caityjohnstone.medium.com/nothing-will-f…

#totalitarianism #politics #empires #propaganda #SystemChange
Facebook’s new Oversight Board is a wild new experiment in platform governance

theverge.com/2020/10/23/215…

#governance #facebook #platforms
Read 6 tweets
Inspired by arxiv.org/abs/1907.10625 and several important observational updates in recent months, I put together an updated compilation plot of H0 measurements from indirect (cosmological-model-dependent) and direct methods.  References are in the thread below. All units km/s/Mpc H0 Compilation as of 19 October 2020
Planck 2018: arxiv.org/abs/1807.06209  H0 = 67.36 +/- 0.54  This is derived from the CMB TT+TE+EE and CMB lensing power spectra.  ("This value is our “best estimate” of H0 from Planck, assuming the base-LCDM cosmology." on their page 17)
ACT DR4 + WMAP9: arxiv.org/abs/2007.07288   H0 = 67.6 +/- 1.1 This is derived from the CMB TT+TE+EE power spectra, with a conservative prior on the optical depth tau.   @ACT_Pol verifies that Planck 2018 'low' H0 value is not due to any systematics in CMB data.
Read 15 tweets
1. “The Death of a Universe” -- Terrific talk this evening by Dr. Katie Mack (@AstroKatie) at @yorkuniversity. Here are a few highlights. This of course is the CMB, the faint microwave “echo” of the big bang. (cont’d) #physics #astronomy #cosmology (@YorkUScience)
@AstroKatie @yorkuniversity @YorkUScience 2. The big bang happened ~13.8 billion years ago. So what lies ahead? Could the universe collapse in a big crunch? Maybe – but as Prof. Mack explained, it's more likely that it will keep expanding. In fact, the universe is currently not only expanding but also accelerating...
@AstroKatie @yorkuniversity @YorkUScience 3. We seem to live in a universe with a non-zero cosmological constant. Right now, the CC appears small – but in the far future, the CC could come to dominate. That won’t end well! At best, in that scenario, we’re going to freeze to death in the dark...
Read 8 tweets
In this month's A&G, read all about the growth of the field of Cosmology, from its speculative origins to the respected discipline it is today, by Malcolm Longair doi.org/10.1093/astrog… #cosmology
(Image Credit: NASA/JPL-Caltech/L Jenkins [GSFC]) an image of space, with 3 bright objects
@RoyalAstroSoc @AstronGeo @OxfordJournals @astro_librarian @KICC_official Early research in #MNRAS was largely based on observational astronomy, but a great number of important advances in cosmology have since been published with us as the field has grown. We look back on some of these groundbreaking discoveries... Hubble Deep Field. A detailed image of space.
The work of Albert Einstein was a clear foundation of things to come, outlined by Willem de Sitter in #MNRAS through a compilation of papers, starting with ‘On Einstein's Theory of Gravitation and its Astronomical Consequences’👨‍🏫doi.org/10.1093/mnras/… #Einstein A photograph of Albert Einstein, writing on a blackboard.
Read 12 tweets
TO SEE A WORLD IN A GRAIN OF SAND
AND A HEAVEN IN A WILD FLOWER
HOLD INFINITY IN THE PALM OF YOUR HAND
AND ETERNITY IN AN HOUR
-WILLIAM BLAKE
In the beginning was the logos, the Big Bang, the primordial OM. Image
Big Bang Theory says that the physical universe spiralled out of an unimaginably hot and dense single point called a ‘singularity’ billions of times smaller than the head of a pin.

It does not say why? Or how? Image
Read 68 tweets
Over the next week, we're going to be looking back at the most cited #MNRAS papers of the decade 🏆 Together they've been cited nearly 10,000 times!
🔟 The 10th most cited #MNRAS paper of the decade was: Too big to fail? The puzzling darkness of massive Milky Way subhaloes by Michael Boylan-Kolchin @MBKplus et al
doi.org/10.1111/j.1745…
#astronomy #MilkyWay Image
@MBKplus @RoyalAstroSoc @OxfordJournals 9⃣ The 9th most cited #MNRAS paper of the decade was: E pur si muove: Galilean-invariant cosmological hydrodynamical simulations on a moving mesh by Volker Springel of the Max Planck Institute for Astrophysics doi.org/10.1111/j.1365… #cosmology Image
Read 12 tweets
#UniverseOrigins (#OriginsoftheUniverse)

@gkarani1 @TTawonga

The Universe consists of 3 types of substance: normal matter, 'dark matter' & 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings & every other visible object in th Universe.
@gkarani1 @TTawonga In the currently scientific understanding of the Universe, 70% is dark energy, 25% dark matter and 5% normal matter.
@gkarani1 @TTawonga 3/ Hydrogen is the most common element found in the universe, followed by helium; together, they make up nearly all normal or ordinary matter.

After defining what a universe is, lets move to how it all started.
Read 21 tweets
@godless_mom Heaven is just a fairy story for those afraid of the LIGHT
#TheoreticalPhysicists prefer to believe in the heavenly fairy tales they can concoct themselves.
#cosmology #Heaven #GOD #Truth #StephenHawking #NeildeGrasseTyson
@godless_mom Don’t know if they buried #StephenHawking in a black hole, like most people, but he said: "If you feel you are in a black hole, don’t give up. There’s a way out."
theguardian.com/science/2015/a… #Hawking #BlackHoles #MythMath #cosmology #NeildeGrasseTyson #atheist
@godless_mom Imagine there’s no #BlackHole heaven.
#StephenHawking didn't know what to believe about the NOTHING of #BlackHoles.
nature.com/news/stephen-h… #atheists #cosmology
Read 14 tweets
(1/5) I'm excited about a new paper that I've written with @GordanKrnjaic and Sam McDermott. It combines some of my favorite things: black holes, dark matter, and the Hubble tension.
arxiv.org/abs/1905.01301
#blackholes #cosmology #darkmatter #Hubble
(2/5) If even a small number of black holes were created around the time of inflation, their relative abundance would grow as the universe expands, making it quite plausible that the energy density of the early universe was once dominated by black holes.
(3/5) If these black holes were small, they would quickly Hawking evaporate. Unlike most other particle production mechanisms, this generates all kinds of particles, no matter how feebly interacting -- a promising way to generate dark matter and dark radiation.
Read 5 tweets
Here we go, time for my first thread about a new paper, out today on your local arXiv server! #sciencetwitter #physics #hepph #darkmatter #cosmology #earlyuniverse #plasma arxiv.org/pdf/1902.08623…
1/ Backstory: we've been looking for dark matter for a long, long time and we haven't found it. We're pretty sure it's a particle based on the concordance of evidence from a wide variety of astrophysical environments, but we're not sure what kind of particle it is.
2/ Since we've been looking pretty hard in a couple of particle mass ranges (most notably we've been looking for dark matter particles that are heavier than a proton) and since we haven't found it, folks are starting to wonder if other dark matter masses are possible/interesting
Read 21 tweets
(1/6) My Collaborators (Miguel Escudero, @GordanKrnjaic and Mathias Pierre) and I just posted a new paper that I am excited about, "Cosmology With a Very Light L_mu - L_tau Gauge Boson", arxiv.org/pdf/1901.02010…

Let me take a minute to walk you through the main points.
#cosmology
(2/6) We considered a new light particle, a Z' associated with a broken U(1)_mu-tau symmetry, and solved the full set of Boltmann equations to determine how such a particle would impact the energy density in neutrinos and other radiation in the early universe.
#cosmology
(3/6) We found two regions of parameter space that change the expansion history in a way that would help to reconcile the discrepancy between local and cosmological measurements of the Hubble constant. The first of these is the well known region with m_Z' ~ 10-30 MeV.
Read 6 tweets
New @Planck results out today. Everybody get reading!! cosmos.esa.int/web/planck/pub… #cosmology #CMB #astrotastic
@Planck This paper gives a comparison between likelihoods for the data - generally in agreement although for some parameters there is a systematic difference of 0.5sigma between likelihoods on the same data.
@Planck Which is also shown in this figure, comparing the ’15 results to the ’18 ones (the systematic likelihood shift is the worst for the baryon density, and therefore the shift between different releases).
Read 11 tweets

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