Correction! I got the wrong comet here. The image shows Comet K1 ATLAS, not interstellar Comet 3I/ATLAS. More about the real comet at the link. Thank you to the gentle folks who corrected me so nicely. en.wikipedia.org/wiki/C/2025_...

For the folks that are still struggling with this. Here is a Venn Diagram. #3I/Atlas #3I 🔭

This is supposed to be a mix of real news and satire, but I can’t figure out which is which. I do know 3I/ATLAS continued doing only comety things for a 114th consecutive day. oddnews.com/article/this...

"The fallacies behind the cult of Loeb" New entry in my blog. Other articles have covered the scientific aspects; this one reflects on the social phenomenon. I argue it’s driven by a series of fallacies tinieblasyestrellas.blogspot.com/2025/11/the-...

Avi Loeb's calculations about 3I/ATLAS are 100% wrong because he has never understood that dust in the tail(s) responds to solar radiation pressure. Solar wind shapes the ion tail. But the radiation pressure is about 1000 times larger than the solar wind ram pressure, for particles that feel it.

Sharing some of the high-quality Breath of Fire III artwork by Tatsuya Yoshikawa that came from GamePro magazine press CDs preserved by @gamehistoryorg.bsky.social! It's cool to see the Japanese key art separated between the background and Ryu/Nina/Rei/Garr group!

AGU is calling on Congress to finish full-year appropriations for science agencies—and we need your voice. 📢 Read more from our president, Brandon Jones, who reminds us that together, we can keep science standing strong: buff.ly/prxry8C #ScienceIsEssential #AGUAdvocacy #SupportScience

On 13 Nov 2026 #NASA's Voyager 1 will be one light day (25.9b km/16b mi) from Earth. No other nation has done this - yet Voyager carries greetings from all humanity. We're not only spacefaring - we're now starfaring. How about a #LightDay - some #interstellar #softpower for NASA?

My daughter has been googling me also, but is yet to find my teacher ratings. I have one negative rating on ratemyprofessor and I am actually quite proud of it. It says "Great class to take if you are interested in astronomy". Don't take an astro class if you are not interested in astro.

This is so cool. Siblings of the Pleiades strewn over the entire sky. Within some of the oldest written languages in the world, from Sumerian to Eblaite to Akkadadian and Hebrew, the name for Pleiades has etymological links to the word "family," and now that family is much bigger.

Yesterday, two preprint about #Quaoar dropped on arXiv. One is about its second moon discovered by stellar occultation. The other constrains the orbit of the known moon Weywot. But I was drawn to its findings on Quaoar. (More in alt text) #art #astronomy #space #SolarSystem #planet #dwarfplanet

I've summarized the truth about Loeb's 10 "anomalies" about 3I/ATLAS in one post. Thanks to @deschscoveries.bsky.social @michael-w-busch.bsky.social @cometary.org and @marshall-eubanks.bsky.social for contributing their expertise!

Why are planetary scientists, astrobiologists and and SETI scientists so negative (pissed off, even) about Avi Loeb’s repeated claims that 3I/Atlas may be an invading alien spaceship? 🧵 🧪🔭🛸 (1/7)

Hey you. YES YOU. Super persnickety astronomer. You know who you are. NASA Exoplanet Archive just updated our overview pages so the stars are closer to their actual colours, as per Harre & Heller (2021) and Cranmer (2021). You're welcome. 😎 (You can thank @kevinkhu.bsky.social!)

Brown. Dwarfs. Are. Purple. Fixing what really matters (to me) on the NASA #Exoplanet Archive since December 2024. 🤣 🔭

信州祭で頒布予定のアクスタイラストでいい霊夢の日🌷 #11月6日はいい霊夢の日

neck deep in the scarlet devil mansion so of course i can only think about the bar none funniest touhou post ever writ

“We are told that AI is inevitable, that we must adapt or be left behind. But universities are not tech companies. Our role is to foster critical thinking, not to follow industry trends uncritically.”

Cassini NAC natural color view taken on 2011-04-25 19:34 UTC. Distance to Rhea: 2.23 million km Distance to Dione: 3.12 million km Distance to Enceladus: 2.98 million km Distance to Saturn: 2.75 million km Phase angle: 67 deg live.staticflickr.com/7257/7148482...

こいフラ

So Avi has been arguing 3I/ATLAS is weird, and a common rebuttal has been “weird compared to what?” - as in we only have 2 other ISOs to compare to. But an interesting thought is that if Oort clouds mix during stellar encounters, many of our comets may in fact already be ISOs in origin.

What about other planets? We applied state of the art techniques to evaluate the presence of any additional signal in the data, finding nothing. In fact, we could establish that no planets with m sin i larger than 2-20 Me (depending on period) are present in the system. #exoplanets 🔭

Likely the silliest use of decades high precision radial velocity measurements

Two Jovian moons Io and Europa eclipses the sun darkening Jupiter's sky. Volcanic plumes and sulfur halo can be seen around Io and water ice jets are erupting from Europa's crust. Also Jupiter's rings, solar corona and zodiacal light also glows in this darkened sky #SciArt #spaceart #Jupiter

Python was awarded a funding grant, funding grant asked Python foundation to remove all diversity and inclusion initiatives they have. Python foundation said no and rejected the grant. If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.

Will repeat my belief that even softer sci fi stuff could gain a lot by injecting some realistic space ship design elements, simply because the soft-sf "WW2 in space" aesthetic has gotten really fucking boring by now

I will say it doesn’t really seem like much of us are doing full blown feature work with it. Most the horror stories I hear of that level of usage are from product/sales people trying to get a team to adapt their features they “built” with AI into the production apps.

Hope isn't enough. Boycott Microsoft, Amazon, EA, Activision, Facebook, Meta, anyone using AI. Support companies that employ humans and pay good wages. Buy from Indies wherever possible and give money directly to creators. Vote for progressive policies. There is no other way out of this mess.

For gamers who aren't in game dev, you should know that we are in one of the worst periods in game dev history in terms of industry stability and the reason you're not seeing that play out through products is because the average development window of games is 3-7 years so it hasn't reached you yet.

VTUBERS! Drop your PNGs! Ever been curious what role you'd play on a nefarious corporate research station in the outer Solar System? Well, now's your chance to find out, because this Friday, I'll be ranking y'all based on what role you'd fill in my lab! #vtuber #envtuber #vsky

At this point, publications that platform Loeb's comments, or feature him as the story lede (i.e., "Harvard Astronomer says....") deserve to be ridiculed and not taken seriously. If you choose to look away from the hugely negative impact is having for the sake of clicks, then that's on you.

Disappointingly little media attention being paid to this alarming new study. Instead, we're hearing about Bill Gates "tough truths" [read b.s.] downplaying the climate crisis. We are living in #DontLookUp

I feel like my experience of posting on the internet is 90% just shitposting, 9.9% attempts at actual science communication, and then 0.1% accidentally going viral big time and not knowing what button i pressed to cause it, but going along with the ride anyway I guess

I'm actually really doubtful on this. Estimating the uncertainty of even a simple ML model is a challenging problem. Doing it for an entire LLM? Good luck... Machine learning has always struggled with model (i.e. epistemic) uncertainty estimation, and building it into LLMs will be very hard

I also show that wrecking ball planets comprise ~30% of the total cold giant planet population, and are lucrative direct imaging targets that contain vast potential for studying planet formation and planet-planet scattering scenarios.

I'm excited to present my analysis of the Gaia-4 and Gaia-5 planetary systems, contained planets that I refer to as "wrecking balls". Unlike most other similar planets I have worked on, these have true mass measurements from RV+astrometry. arxiv.org/abs/2510.23792

it’s giving Jupiter south polar vortex tbh

This is footage taken earlier today of the eye of Hurricane Melissa. The entire view is remarkable, of the core of one of the strongest Atlantic basic hurricanes in recorded history, and a catastrophic hit to Jamaica and the central Caribbean.

こいしとこいし

❤️ RUE and Hiling 💙 #OC #OCSky #art #bskyart

A reminder that Mercury is basically a giant, molten ball bearing in space.

Whenever people complain about the number of folks relying on food stamps, it is worth reminding them that SNAP is, by too large of a degree, a subsidy for corporations that refuse to pay a living wage and their political allies who reject public policy prescriptions to reduce income inequality.

#MinecraftAprilFools 2025「THE CRAFTMINE UPDATE」PART29 遊びました！ 今回は暖かい海がクラフトマイン世界に生成されるかとにかく試行→この半年の経験から考えてサバイバルでは不可能では？となり、遂にクリエイティブ解禁となりました🎉 次回はサバイバルで見られなかった要素観光回です！楽しみ

Fresh JWST view of Uranus taken Oct 6 2025 with NIRCam. Full size & more info: flic.kr/p/2rByidu 🔭🧪 Credit: NASA/ESA/CSA/STScI/Andrea Luck CC BY Proposal PI: Varun Bajaj Proposal ID: 8975 Filters: F150W2-F162M, F410M

Let's unravel the mystery of Saturn's polar hexagon. A jet stream speeds around the pole at 320 km/h (200 mph). That’s common among planets, but what's not is that it oscillates up and down *very* stably. Each low point of this sine wave becomes a corner of a hexagon, when projected onto a sphere:

#pokemon マチエール

#2kkitober day 22 - misty forest #deepdreams