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Reposted by Andy Casely

Chanda Prescod-Weinstein 🌌 @chanda.blacksky.app · 9d

YES! THIS on GenAI!

Please read this absolutely splendid piece of writing that had me cheering, a little bit weepy, and writing in the margins:

"An extraordinary amount of money is spent by the AI industry to ensure that acquiescence is the only plausible response. But marketing is not destiny."

Large Language Muddle | The Editors

The AI upheaval is unique in its ability to metabolize any number of dread-inducing transformations. The university is becoming more corporate, more politically oppressive, and all but hostile to the ...

www.nplusonemag.com

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Andy Casely @deep-twilight.bsky.social · 12d

My social media manager for this one is Helen, but I'm pretty chuffed to win the Solar System category at the Malins for the third time in the last five years (move over Brisbane Lions, I'm doing back-to-back wins too 🤣). Congrats to the other winners and finalists too, some great images again

Helen MC @crystallised-cricket.com · 12d

Proud of @deep-twilight.bsky.social, following his 2024 Solar System category win in the Malin awards (Australia's premier Astrophoto comp) with another in 2025. This time for a beaut sequence of Saturn through equinox.

A composite of four images of Saturn through equinox. In practicality, this means that the rings move from tilted through to straight, then tilted again. Saturn is seen as a pale orange sphere, with band of clouds visible in each of the four images.

An image of a trophy and a certificate for Winner of the 2025 Solar System category of the David Malin awards - awarded to Andy Casely

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Reposted by Andy Casely

Elise Cutts @elisecutts.bsky.social · 15d

Cecilia Payne-Gaposchkin ✨ figured out what stars are made of ✨ when she was just 25. 🔭🧪

Her PhD thesis basically established the Harvard astro department — at a time when Harvard didn't officially allow woman students.

I wrote this little profile to mark the 100th anniversary of her thesis:

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Andy Casely @deep-twilight.bsky.social · 14d

Three galaxies, aurora, mountains and clouds
A timelapse from a recent trip to Glenorchy, NZ - beautiful dark skies and plenty to look at, with clouds bubbling off the Humboldt Range, broken enough to see the southern lights below the Milky Way and Magellanic Clouds. EOS6Dii, 228 frames, 20s each

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Andy Casely @deep-twilight.bsky.social · 14d

A great summary of the start of the #wncl cricket season by @crystallised-cricket.com . Who will be the breakout stars of 2025-26? I'm looking forward to finding out!

CRICKETher @crickether.com · 15d

WNCL PREVIEW: A Great Season for New Stars to Shine

by Helen Maynard-Casely @crystallised-cricket.com

crickether.com/2025/09/24/w...

WNCL PREVIEW: A Great Season for New Stars to Shine

by Helen Maynard-Casely A timelapse of the milky way making its way across the sky of the Southern hemisphere. One thing you will notice is that in the cacophony of stars, those celestial bodies yo…

crickether.com

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Andy Casely @deep-twilight.bsky.social · 15d

Two comets and Mars, 21st Sept
C/2025 R2 (SWAN) is keeping pace with Mars, and fainter C/2025 K1 (ATLAS) is descending towards the Sun. Processing was interesting, correcting for three moving objects against the twilight starfield. Tonight, the Moon joins the party!
EOS 6Dii, 35x1min, 300mm @ f/5.

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Reposted by Andy Casely

Zeke Hausfather @hausfath.bsky.social · 15d

In a UN speech today, President Trump said that "all of these [climate] predictions were wrong".

Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!

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Andy Casely @deep-twilight.bsky.social · 15d

Thanks for the repost Rami!

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Andy Casely @deep-twilight.bsky.social · 26d

A Galactic frame of reference
What's your point of view? Does the Milky Way set, or does the Earth just get in the way? Been wanting to do this one for a while! ~6hrs, 30s per frame, EOS6Dii, Star Adventurer, Sigma 14-24mm. Processed in PixInsight & PS. #astrophotography #timelapse

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Andy Casely @deep-twilight.bsky.social · 29d

I'm pretty sure (like a few others here) these are mammatus, with parts blown into streaks by strong winds towards the camera along the underside of the cumulonimbus anvil. They're in an odd perspective with the good mammatus structure far away and silhouetted against the brighter sky. Nice pic!

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Andy Casely @deep-twilight.bsky.social · 29d

Waxing Moon, 3rd Sept
I was playing with camera focus and focal length points on the C14 - 585MM + focal reducer = 7 panel whole Moon mosaic, The full-size processed image is 90 megapixels. Hello, nearest neighbour! Full res view here: photos.app.goo.gl/J5pR2DJYiwrq...

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Andy Casely @deep-twilight.bsky.social · Aug 30

A dusty MIlky Way snap from a short break at Turon Gates, NSW. 29x90s, EOS 6Dii @24mm, Star Adventurer, good skies. Antares region is below centre. #astronomy #astrophotography

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Reposted by Andy Casely

Leigh Fletcher @leighfletcher.bsky.social · Jun 24

Peter Rosén has created another great animation of #Jupiter's storms during the 2024/25 apparition, made from thousands of amateur observations and projected in a variety of different ways. Incredible amount of work must have gone into this #planetsci [Credit: P. Rosén]

youtu.be/x1W_Ux_jgaE?...

2 Huge Storms have erupted on Jupiter

YouTube video by Peter R

youtu.be

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Andy Casely @deep-twilight.bsky.social · Jun 12

You have been kidnapped and a character from the last tv show you watched is trying to rescue you. Who is coming to save you?

Chances of survival... slim

Reposted by Andy Casely

Lora Kolodny @lorak.bsky.social · May 26

“When the system forces you to code with a hallucinating clown, eventually you stop resisting. You let him type. You let him be "productive." You check out. You surrender your brain to the noise and just float.” deplet.ing/the-copilot-...

The Copilot Delusion

Disclaimer: This post was written May 2025, and the arguments apply to AI code capabilities at this time. The arguments around lack of competence are certainly likely to become less prevalent-while th...

deplet.ing

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Reposted by Andy Casely

David Slack @slack2thefuture.bsky.social · May 26

If your business model doesn’t work without breaking the law, then you’re not in business.

You’re in organized crime.

The Verge @theverge.com · May 26

Nick Clegg says asking artists for use permission would ‘kill’ the AI industry

Paul McCartne, Elton John and others signed an open letter.

buff.ly

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Andy Casely @deep-twilight.bsky.social · May 26

Dust storm this morning, everything a bit hazy. Our periodic reminder there's a lot of desert away out west!

Andy Casely @deep-twilight.bsky.social · May 9

Images are red filter only, calibrated to be similar in brightness, moons labelled. The line across Saturn is the rings/silhouetted against the planet. F ring would normally be totally invisible, may be brightest part of the rings in images at/just before before equinox. Celestron C14, ZWO ASI585MM.

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Andy Casely @deep-twilight.bsky.social · May 9

Sunrise on Saturn's rings
3 images 3rd-8th May (UT) - rings reappearing through Saturn's equinox on the 6th. First image shows the Sun/Earth-facing outer edge only, likely basically the F ring! (brightest equinox ring in Cassini 2009 data) Last image has south face of the rings illuminated again.

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Reposted by Andy Casely

CosmicRami 🏳️‍🌈🏳️‍⚧️ @cosmicrami.com · May 7

If you like then you better put a ring on it! 🪐

@deep-twilight.bsky.social got a really nice pic of #Saturn during the time when it’s ring system is pretty much edge on to our perspective. And a couple of Moons!

Really like the colour of the equatorial and higher latitude belts.

Edge on view of the planet Saturn. The rings appear as a thin black line that dissects the disc of the planet. The colours are hues of soft pink and grey-green

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Andy Casely @deep-twilight.bsky.social · May 7

Thanks Rami! Those colours are pretty but a nightmare, some of the belts appear actually slightly greenish (and did last year), but normally green isn't seen much in the sky - adjusting this image wasn't easy and i still don't think I have it right 😬

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Andy Casely @deep-twilight.bsky.social · May 5

Indeed - it is significantly easier to catch Mimas, and perhaps even fainter moons just now without the rings glare. It should also be easier throughout this opposition as the rings will be a bit fainter.

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Andy Casely @deep-twilight.bsky.social · May 5

Hidden rings, 3rd May
You can see the rings in a longer-exposed, very heavily-stretched view! The ghostly rings are so faint just now that they are far outshone by 13.5mag Mimas (the fainter of the pair of moons on the left ansa). C14, ASI585MM, 6mins IR642nm. Sunrise on the rings is tomorrow...

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Andy Casely @deep-twilight.bsky.social · May 5

Saturn, five moons, no rings
What a strange planet! Tomorrow is Saturn's equinox, a rare good look without its famous ring system, far too faint to see in a normally-exposed image, silhouetted against Saturn. Dione, Rhea, Mimas, Tethys and Enceladus too. C14, ASI585MM, 15mins, 3rd May 19:54UT.

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Andy Casely @deep-twilight.bsky.social · May 3

Saturn's hidden rings, 2nd May
A snap of the dark side of Saturn's rings, only four days before Saturn's equinox. The silhouette of darkened rings cuts across the planet, and the full extent of the very faint rings themselves are in an overexposed and strongly stretched version. #astrophotography

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