Gustavo BC

Foto do vulcão Monte Lewotobi Laki-Laki na Indonésia. Foto: Indonesia's Geological Agency / AFP

Com a erupção do vulcão Monte Lewotobi Laki-Laki na Indonésia, tem rolando desinformação sobre vulcões - e vinda de um perfil grande. Então acho importante falar sobre isso

Os vulcões emitem muito CO2, logo, seriam mais responsáveis pelo aquecimento global do que o homem?

Não!!!!!

Vem entender 👇

A lumpy crescent of a moon with deep craters and pits. NASA/JPL-Caltech/SSI/CICLOPS/Kevin M. Gill

A “crescent” view of Hyperion, the lumpy moon of Saturn. Processed using imagery taken by Cassini in August 2011.

flic.kr/p/2qBqSrK

The waxing quarter Moon of Wednesday, 2025-07-02. The colours are gently enhanced to show the subtle colour differences that exist on the Moon's surface due to varying mineral composition. Near the terminator, both the Lunar X and lunar Y light-and-shadow effects are visible.

Cropped view of the previous image, zoomed into the area containing the previously mentioned Lunar X and Lunar V, which are circled and labelled. The X is formed from the rims of the craters Blanchinus, La Caille, and Purbach, while the V is formed from the rim of the Ukert crater plus a few small craters that surround it.

Here's the quarter Moon from about a week ago. You can juuust see the Lunar X near the top left, and the Lunar V near the top middle — these are a light-and-shadow effect created by the rims of a few craters near the terminator for just a few hours every first quarter
#astrophotography

#astrophotography community here: do your thing! Did anyone take photos of Saturn on July 5th? Would've been after ~4am Eastern time.

OMG.

Look at the Trifid Nebula.

Never seen or known it to be surrounded in full by the blue reflection nebula, and I have photographed it many times.

Full announcement happening at 8am LA time (just before the Pulsar Conference starts here), which I think is about 1am Sydney time.

Can't wait!

U.S. Senator John Fetterman: "Our commitment to Israel must be absolute and I fully support this attack. Keep wiping out Iranian leadership and the nuclear personnel. We must provide whatever is necessary—military, intelligence, weaponry—to fully back Israel in striking Iran."

Holden Bloodfeast (D) pennsylvania "-118 years old -Please god just let us nuke Iran, nothing else matters, I'll do anything please I just want to see burning flesh one last time before I die -Respectable bipartisan"

fucking hell

zoomed in view of the previous image, cropped to an area that covers most of the spots. A tiny circle shows the Earth to scale, with a label and an arrow pointing to it that says "EARTH". This tiny circle, containing everyone you know and everywhere you've been, is smaller than almost every single sunspot visible.

at this scale the Earth is like 5 pixels. a microscopic speck. a tiny little thing. almost every single one of these spots is bigger. 🤯
🔭

Photo of the Sun, seen as a white orb with a gentle texture to it and various spots. Active Region (AR) 4100 is visible just below the centre of the disk with 26 spots, and AR 4099 is just above and to the left of centre with 13 spots. ARs 4096 (bottom left), 4101 (left of 4100), and 4104 (above+right of 4100) are also visible, with 1-3 spots each. North is approximately down.

Trying solar photography again, there's some nice active regions right in the middle! AR 4100 is just below centre, and AR 4099 is just above and to the left. AR4100 produced a huge flare earlier that should light up the auroras in the coming nights!
#astrophotography 🔭

There was snow in southern Brazil a couple days ago, IIRC a few temperature records got broken in the south and southeast as well. Not totally unheard of before June, but had a bigger volume than previous years.

Close-up view of the shadow cast by one of Jupiter's moons over the planet's cloudtops.

A bit of #Jupiter (NASA / JPL-Caltech / SwRI / MSSS / "Hawksmoor-70")

This movie shows the bubbling surface of a distant star, as captured with unprecedented clarity by the ALMA observatory.

R Doradus is a huge star. Each of these bubbles is 50-75 times the diameter of our entire Sun! 🧪🔭

www.almaobservatory.org/en/press-rel...

Um pássaro colorido com uma crista alta e pontiaguda de penas pretas, um bico preto e uma garganta amarela brilhante, peito e pescoço. O resto do corpo é branco e cinzento, com tons de marrom avermelhado nas asas e no corpo inferior. Está empoleirado em um galho de árvore, com um fundo de céu azul claro. Atenção: O alt da imagem foi gerado automaticamente.

🇧🇷Arapapá
🌎Cochlearius cochlearius
Conservação:Pouco Preocupante

O arapapá (Cochlearius cochlearius) é uma ave pelecaniforme da família Ardeidae

📷 Francisco Falcon

The space invader emoji 👾 with a red cross through it (i.e. no aliens).

So the independent consensus from four recent studies (Schmidt+2025, Taylor 2025, Welbanks+2025, Luque+2025) is that there is no detection of DMS in K2-18b's atmosphere.

Supernumerary!

Inclusive Pride flag.

17th May is the International Day Against Homophobia, Biphobia, Intersexism and Transphobia.
The date commemorates the World Health Organisation’s decision in 1990 to remove homosexuality from its classification of diseases.
We exist. We don’t need a cure.
#IDAHOBIT

NEW from me: China's CO2 emissions fell ~1.6% in the first quarter and have now been flat or down for more than a year. This is the first time on record that emissions are falling due to clean energy growth, not slow power demand.

Um pássaro escuro voando contra um céu azul. As asas do pássaro estão abertas e suas penas são de um azul iridescente. O corpo do pássaro é escuro, quase preto. O pássaro está em foco e o fundo está desfocado. Atenção: O alt da imagem foi gerado automaticamente.

🇧🇷Andorinha-azul
🌎Progne subis
Conservação:Pouco Preocupante

A andorinha-azul é uma ave passeriforme da família Hirundinidae.


📷 José Rondon

Call for Proposals: International Thematic Grant (InTheGra) Call announcement: April 30, 2025 Deadline for submission of pre-proposal: June 30, 2025 Selection result of pre-proposal announcement: July 31, 2025 Deadline for submission of full proposals: Septemb...

FAPESP has an open call to attract senior researchers to São Paulo, Brazil. Anyone interested to join Mackenzie University under this, get in touch!
#AcademicSky #heliophysics #photonics
fapesp.br/17523/call-f...

While true, if we're going there we'd have to revisit *all* modern food anyway :D

jeeeeeeeeeeesus chrrrrrrrrrrrriiiiist

Depiction of the Earth, its rotational and magnetic axes, and the Van Allen belts around it. The rotational axis is depicted vertically, and the magnetic axis is slightly tilted *and* off-centre with respect to the rotational axis. This offset brings the Van Allen radiation belts slightly closer to the Earth on one side, and causes a "weak spot" in Earth's magnetic field over South America and the South Atlantic, known as the South Atlantic Anomaly. Author: Marko Markovic (en-Wikipedia)

What really messes me up ab. Earth's magnetic field is how it's not actually concentric with the Earth itself, despite most material representing like that—this gives us the South Atlantic Anomaly! It's not as offset as the ice giants', but it's there and not brought up as often as I think it should

this is correct, I can see the alt text within inspect element, and at least the one screen reader I tested can also pick it up, but bsky just doesn't give us a clean view of it for videos for whatever reason. Think i've heard one of the third party clients does, but don't remember which :/

AN ALL-NATURAL BANANA image of a banana INGREDIENTS: WATER (75%), SUGARS (12%) (GLUCOSE (48%), FRUCTOSE (40%), SUCROSE (2%), MALTOSE (<1%)), STARCH (5%), FIBRE E460 (3%), AMINO ACIDS (<1%) (GLUTAMIC ACID (19%), ASPARTIC ACID (16%), HISTIDINE (11%), LEUCINE (7%), LYSINE (5%), PHENYLALANINE (4%), ARGININE (4%), VALINE (4%), ALANINE (4%), SERINE (4%), GLYCINE (3%), THREONINE (3%), ISOLEUCINE (3%), PROLINE (3%), TRYPTOPHAN (1%), CYSTINE (1%), TYROSINE (1%), METHIONINE (1%)), FATTY ACIDS (<1%) (PALMITIC ACID (30%), OMEGA-6 FATTY ACID: LINOLEIC ACID (14%), OMEGA-3 FATTY ACID: LINOLENIC ACID (8%), OLEIC ACID (7%), PALMITOLEIC ACID (3%), STEARIC ACID (2%), LAURIC ACID (1%), MYRISTIC ACID (1%), CAPRIC ACID (<1%)), ASH (<1%), PHYTOSTEROLS, E515, OXALIC ACID, E300, E306 (TOCOPHEROL), PHYLLOQUINONE, THIAMIN, COLOURS (YELLOW-ORANGE E101 (RIBOFLAVIN), YELLOW-BROWN E160a), FLAVOURS (3-METHYLBUT-1-YL ETHANOATE, 2-METHYLBUTYL ETHANOATE, 2-METHYLPROPAN-1-OL, 3-METHYLBUTYL-1-OL, 2- HYDROXY-3-METHYL BUTANOATE, 3-METHYLBUTANAL, ETHYL HEXANOATE, ETHYL BUTANOATE, PENTYL ACETATE), 1510, NATURAL RIPENING AGENT (ETHENE GAS). ©2017 James Kennedy.

This did the rounds a while back, guess people already forgot it

Quick reminder for space lovers: if you’re into space exploration, skip the shady content farms of the legacy social networks… BlueSky’s full of talented folks turning raw space data into stunning original visuals. Here’s a list for you, go follow and support them 🚀

go.bsky.app/PUXRaYf 🧪🔭

going to go full reddit atheist for a moment but at the end of the day any pope is still the pope of a horrific global religious institution

Black and white photo of the Sun. North is approximately down. Three groups of sunspots (Active Regions, ARs) are visible: - AR 4079 is the biggest one, at the left side of the sun's disk, with 33 spots covering about 3.8 billion square kilometres. - AR 4081 is visible near the middle as a smaller group containing 10 sunspots covering approx. 304 million square kilometres. - AR 4082 is right of centre, containing 8 sunspots covering approx. 426 million square kilometres.

First serious attempt at solar photography — lot more detail than I expected at 300mm! AR 4079 is HUGE, I could even spot it without magnification 🤯
#astrophotography #sun

Picture of a region of sky around the Lagoon Nebula (near centre) and the Trifid Nebula (above and to the left of the Lagoon), both in Sagittarius. The Lagoon Nebula is seen in mixing shades of pink, cyan, and white, while the Trifid has two distinct sections, one in magenta and one in blue/cyan. The Trifid's magenta section, an emission nebula, has dust filaments that appear to cut it into thirds, giving it its name. Its blue/cyan portion is a reflection nebula. The field covers an area approximately 6.5 degrees wide by 3.7 degrees tall. A few open and globular clusters can also be seen in the image. A bright area containing dust, gas, and stars from the central region of the Milky Way is visible at the bottom right.

Lagoon (middle) and Trifid (above and to the left of it) nebulae in Sagittarius, ~21m37s exposure
Plenty more neat stuff in this field too, including one other Messier object + a few globular clusters (NGC 6544 just below Lagoon, NGC 6553 a little further down) etc
#astrophotography #astrofotografia

The Moon, approximately half illuminated as seen on the 4th of May, 2025. The colours have been somewhat enhanced to better display the variability in the Moon's mineral composition, with blue hues hinting at higher concentrations of titanium minerals and redder hues suggesting higher concentrations of iron. Mare Tranquilitatis is notably bluer than average, while Mare Serenitatis is gently redder.

Last night's quarter #Moon, colour enhanced to showcase the variance in lunar mineral composition
#astrophotography #astrofotografia

A field of stars, with an open cluster (M44, the Beehive Cluster, or Praesepe) near the middle. Right below the cluster, the planet Mars, visible as a bright orange-red star.

#Mars (bright orange/red dot below centre) and the Beehive/Praesepe Cluster (M44) last night doing a nice lil' conjunction dance
#astrophotography

I hope everyone working on LLMs has reckoned with their role in building a technology that, so far, has offered little to no benefit to humanity — while causing real harm by degrading art, undermining labor in creative industries, and straight up automating political propaganda