Discover and read the best of Twitter Threads about #astronomy

Most recents (19)

Who wants to see the #Diversity data for @STFC_Matters, that was released by @UKRI_News last week?

The full data release is here, so if you want to see anything for yourself, go ahead: ukri.org/about-us/equal…
@STFC_Matters funds research & training into astronomy, particle physics, space & planetary sciences & nuclear physics. This is important because @ukhesa only report STFC as #physics – it’s so much more!

STFC have a #equality & #diversity statement here: stfc.ukri.org/funding/promot…
So, let’s start with @STFC_Matters #ethnicity data.

Worth noting that @UKRI_News collate three categories; ethnic minority, white, not disclosed.

We can’t separate out different ethnicity, which is a problem in itself. Image
Read 68 tweets
Daily Bookmarks to GAVNet 6/01/2020-2

greeneracresvaluenetwork.wordpress.com/2020/06/01/dai…

Daring Fireball: A Spectacularly Bad Washington Post Story on Apple and Google’s Exposure Notification Project

daringfireball.net/2020/05/washin…

#apple #notification #exposure #google #tracking
Girl, 12, survives heart failure tied to Kawasaki-like syndrome believed caused by coronavirus - The Washington Post

washingtonpost.com/health/2020/05…

#failure #coronavirus #syndrome #heart
Investigating neural mechanisms underlying individual differences in perception

medicalxpress.com/news/2020-05-n…

#neural #perception
Read 12 tweets
On 3 May 1374 BCE a solar eclipse was observed and recorded at Ugarit by Mesopotamian astronomers. "On the day of the new moon, in the month of Hiyar, the Sun was put to shame, and went down in the daytime, with Mars in attendance." Humour me - unpack that staggering assertion.
We know for a fact that a solar eclipse took place on this day 3,394 years ago. How? Because #science can verify #history and its records, when the records survive.
Some sources list this eclipse as occurring in 1375 but NASA's catalogue of solar eclipses clearly states 1374. (1375CE had eclipses in June and November.) Check out the catalogue and look back into the history of #astronomy. It's beautiful.
Read 5 tweets
This thread is documentation of #viral, #PseudoScience & #irrational information circulating around in the midst of #CoronavirusOutbreakindia.
Starting from @AltNews report debunking uniform latitudes of places where #Corona came.

altnews.in/places-most-af…

@ScienceMarchMum
Coronavirus: Is drinking cow urine any help?
By Reality Check team @BBCNEWSIndia1

bbc.com/news/amp/world…
China culled around 18,000 chickens in Shaoyang city in the southern province of Hunan as a result of a flu outbreak. Rumours in India started circulating, that broiler chicken has been infected with Coronavirus and people should avoid consuming it.

altnews.in/coronavirus-in…
Read 39 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
Guess what!? It's ASTRO TIME! 🤩

Yesterday I went star-gazing in Tekapo, a dark sky reserve, so let's talk about it!

And before you ask: YES, I TOOK THIS PICTURE WITH MY PHONE 😱
We'll talk about that too, don't worry😉

Are you ready for science? 🤩

#astronomy #science
1/15
First of all, let's talk about the Milky Way, the big bright band in the sky: it's the disk of our galaxy that we see from the INSIDE! But what are these clouds there?

These are molecular clouds: the coldest, densest nebulae. So dense they obscure everything behind them!

2/15
But in the southern hemisphere, the Milky Way isn't the only galaxy you can see with the naked eye 👁️👁️

Look at the bottom right on this pic, see the fuzzy white blobs?

Let me present to you:
▶️ The Small Magellanic Cloud
🔽 The Large Magellanic Cloud

3/15
Read 15 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
@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
Read 12 tweets
Why do we know #Betelgeuse may go #Supernova within the next few 100000 years, but most likely not soon? And why are we sure the Sun will be a safe star for Billions of years?

A brief primer #thread to Stellar Evolution. 1/

Sun: SDO. Betelgeuse: ESO/ALMA
#astronomy #Space
First thing to know is: stars are not all alike. They are big, small, bright, dim, have different colors and die different deaths. The quantity at the root of their diversity is their MASS. Stars have masses between roughly 0.1 & 100 times the Sun’s mass. Large ones are rare.2/
Here is the fundamental diagram of stellar evolution. It’s called the Hertzsprung-Russell Diagram (HRD). The further left you go, the hotter stars become. The further up you go, the brighter stars become. 3/
(Pic: ESO)
Read 20 tweets
1. @ExtinctionR Having looked at some of your policies & grievances my advice to you as a scientist is to do your own research before you jump to conclusions; resist the temptation to go down a EnergyDeadEnd path before really appreciating after years of research life's realities
2. @ExtinctionR scenario has come about through a few scientists exaggerating #ClimateChange which is a natural phenomena that has occurred since Earth had an atmosphere; one of the variables keeping us warm is yes photosynthesising #TraceGas #CO2 as well as water vapour (clouds)
3. @ExtinctionR Earth's CO2 levels vary over time & currently only 0.041% or to make it sound larger 410ppm on average; at levels below 200ppm to 150ppm #photosynthesis ceases & all life relying on plants will die off.
Many other variables are involved with #ClimateChange e.g.Sun
Read 26 tweets
Amateur astronomers around the world are noticing that something weird is happening to the Great Red Spot in Jupiter... observations are showing variability in just few hours. Stay tuned ... or even better, if you can take photos of Jupiter, do it!
Another busy day... I had to skip morning sessions at the #A3Dscimeet19 as I needed to do a couple of “urgents” things at the uni including marking quizzes from my tutorings and preparing an invitation letter for a PhD student visiting us in July...
But before I forget again, it is very important to say a big “Happy Birthday” to the @theskyentists co-host & awesome young astronomer & Science communicator @AstroKirsten as she just completed another full orbit around the Sun!
Read 18 tweets
Thread: Another overview amazing #Muslim *female* achievement.

Did you know the first university in the world was built by a Muslim woman approx 1200 years ago?

This is the story of Fatima Al-Fihiri (800–880 CE). #BadassWoman #twitterstorians

1/15
2. Daughter of a wealthy businessman, the family moved from Tunisia to Fez, Morocco during the rule of King Idriss II. When both her husband and father died, Fatima and her sister inherited a fortune.

They chose to spend their inheritance on building educational institutions.
3. In 859, Fatima built the Al-Qayrawan #Mosque, decorated in the Andalusian style with Kufic calligraphy (early style) engraved throughout. At 3,000 sq ft, it can fit 22,000 people.

She stacked it with Islamic works (Qur’ans, #Hadith collections, etc).
Read 16 tweets
.. den Vorstellungen der Ursächlichkeit, Materialität und der durch die Zeit vermittelten Bewegung im Raum! Die Empfindung in der Hand, auch bei verschiedener Berührung und Lage, ist etwas viel zu Einförmiges und an Datis Ärmliches, als dass es möglich wäre, daraus die
..
..Vorstellung des Raumes, mit seinen drei Dimensionen, und der Einwirkung von Körpern auf einander, nebst den Eigenschaften der #Ausdehnung, #Undurchdringlichkeit, #Kohäsion, #Gestalt, Härte, Weiche, #Ruhe und #Bewegung, kurz, die Grundlage der objektiven Welt, zu konstruieren:..
.. sondern dies ist nur dadurch möglich, dass im Intellekt selbst der Raum als Form der Anschauung, die Zeit als Form der Veränderung, und das Gesetz der Kausalität als Regulator des Eintritts der Veränderungen präformiert seien. Das bereits fertige und aller Erfahrung
..
Read 22 tweets
“Earthrise: A Video Reconstruction” is #NASA #astronomy picture of the day by @apod/@USRAedu apod.nasa.gov/apod/ap181223.… Apollo 8’s iconic photo “Earthrise” was taken 50 years ago; 4K HD animation shows astronauts’ view using NASA LRO data of lunar surface
“Earthrise in 4K” is a 50th anniversary commemoration of the 1968 #Earthrise image during Apollo 8, and description how the rendering was made with NASA LRO imagery/data taken since 2009, by @NASA/@NASAGoddard/@USRAedu #astronomy #Apollo50 #Apollo8 #Moon
#Apollo8 was historic for 1st time humans left Earth and orbited the Moon. Apollo was intended as Cold War competition with Soviets. Starting with #Earthrise photo and many other observations, we found we had much to learn about Earth there. #astronomy #space #history
Read 7 tweets
Today's thread

A look at "Maya" in the night sky.

How Saptarishi/ big Dipper constellation is a divine illusion.

The whole world is indeed Maya

#astronomy #maya #CBG_Thread
Saptarishi or Big Dipper is the most commonly recognizable constellation in the night sky. Woven into mythology and folk lores across the world, it must have guided forlorn sailors and travellers alike. But what if I told you that the appearance of constellation is a lie? 2/n
Made up 7 stars, the nearest star of Saptarishi is only 63 light years away while the farthest one is 210 light years away...... 1 light year is almost 9000 billion kms.

You can see that they are anything but a closely placed group of stars. 3/n
Read 8 tweets
Got a seat right in the front at #CSPC2018 @sciencepolicy for the panel on #NextGenCanScience (science and the next generation) feat enablers of trainees getting involved in #scipol @ChiefSciCan @McGill_VPRI @katemoran Stacey Robinson and @DanWicklum
#CSPC2018 @ChiefSciCan mentions #Budget2018 reinvestments of 2.8B$ to create more collaborative infrastructure in govt labs and beyond. This is a once in a lifetime opportunity to get things right and elevate Canada in science leadership 🙌
📣 All major equipment in federal labs will be part of a registry and be accessible to everyone ➡️ democratizing the infrastructure of #cdnsci - @ChiefSciCan #CSPC2018 @sciencepolicy
Read 37 tweets
For the record, I know nothing about astrology.
I love Astronomy!!!
I was even on the core team during the repair the Hubble Telescope while the Cosmic Origins Spectrograph (COS) which was installed during Servicing Mission 4 (STS-125) in May 2009.
Astronomy (from Greek: ἀστρονομία) is a natural science that studies celestial objects & phenomena. It applies mathematics, physics, & chemistry, in an effort to explain the origin of those objects & phenomena & their evolution. I love looking at the stars.
Objects of interest include planets, moons, stars, galaxies, & comets; the phenomena include supernova explosions, gamma ray bursts, & cosmic microwave background radiation. More generally, all phenomena that originate outside Earth's atmosphere are w/in the purview of astronomy.
Read 49 tweets
THREAD - How about a bunch of blog posts on #Space and #Astronomy? Yes, I have more than you can imagine - especially since these are really just #physics topics. Hold on - because this is going to be a bit large.
2/ Here is an answer to my fav astronomy question EVER - "What would the phases of the moon look like if the moon was a cube?" wired.com/2015/09/moon-c…
3/ The great thing about the cube moon question is that it really tests if students understand phases of the moon rather than just recalling factual stuff. Here is my python model of a cube and spherical moon
Read 70 tweets
Expanding the #HertzsprungRussell diagram courtesy of @xkcdComic

#Physics #Astronomy #Cosmology

Step 1: Take an HR Diagram
Expanding the #HertzsprungRussell diagram courtesy of @xkcdComic

#Physics #Astronomy #Cosmology

Step 2: Add a Scale
Expanding the #HertzsprungRussell diagram courtesy of @xkcdComic

#Physics #Astronomy #Cosmology

Step 3: Expand the Diagram
Read 14 tweets
Today's thread

Measurement of time.
How current calendars can't match ancient Hindu timekeeping.

Why a day isn't always 24 hours long

Why a year doesn't have 365.25 days

#science #astronomy #Time
1/n
How long does a day last everyday? 24 hours? Wrong.

We define day as the time taken by Earth to complete one rotation around its axis.
But with respect to what is the measurement made? 2/n
Since Earth is also revolving around Sun while it is rotating, it needs to rotate a little extra when rotation is measured w.r.t. sun (solar day) than a distant star (sidereal day)
3/n
Read 10 tweets

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