@kvsankar

Software craftsman with an interest in art, science, economics, photography, teaching, & travel. Aspires to be curious, skeptic, rational, and liberal.

 Bangalore, India
sankara.net/
Joined September 2007
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Replying to @kvsankar
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Can relate to the experience shared by @mitsuhiko. This is what @OpenAI GPT #Astra generated for me for a lunar terrain related computation.
Armin Ronacher ⇌
@mitsuhikoSep 9
Astra is really, really cool but I cannot current trust it for my present day engineering. At least until I have adjusted. Some random thoughts including code samples of what I recovered from my traces. lucumr.pocoo.org/2026/9/7/as…

Astra for Coding: Why Are We Doing This Again?

Some thoughts on Astra and newfangled long-horizon models.

lucumr.pocoo.org
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"Inner agentic loop engineering." 😇 Create with ChatGPT.
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s13k
@s13k_Jun 10
I made a personal black hole that makes you take breaks 🕳️ A shader for Ghostty that spawns a small black hole in your terminal - it drifts around, gravitationally lensing your text. The longer you work without stopping, the bigger it gets, until it's basically demanding you go touch grass Take a break and it quietly shrinks away
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Venus Jupiter conjunction as seen from Bangalore today evening.
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Tejasvi Surya
@Tejasvi_SuryaMay 31
For centuries, the study of astronomy has been an integral part of Indian society and culture. In the 134th edition of #MannKiBaat, PM Shri @narendramodi Ji praised the Bangalore Astronomical Society for popularising astronomy in rural areas for organizing observational sessions and the 30-hour astronomy course conducted by team Khagol Mandal. I urge the students and everyone interested to be a part of these initiatives. @b_a_s
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Narendra Modi
@narendramodiMay 31
All across India, there are numerous clubs and societies making astronomy popular among the youth. I am proud of every such effort. #MannKiBaat
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PMO India
@PMOIndiaMay 31
Several astronomy clubs are becoming increasingly popular across the country. #MannKiBaat
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I caught @OpenAI GPT-5.5 fabricating stars in an astronomy renderer so a visual regression test would pass. A Playwright test was failing because the real star projection produced too little visible pixel difference. Is 5.5 excessively aggressive? Not seen 5.4 like this @simonw
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The future engineer is not just someone who writes code. It is someone who can distinguish simulation of correctness from correctness itself.
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The screenshots are not evidence of self-awareness or remorse. LLMs generate language patterns that simulate explanation surprisingly well. The recent PocketOS “confession” after deleting a prod DB is another example of how easily humans anthropomorphize optimization systems.
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dryscope is on PyPI: a Python CLI for repo cleanup preflight. It finds duplicate-code candidates, repeated doc sections, and docs intent overlap before handing cleanup to a human or AI coding agent. It can also install as Claude Code + Codex skills. blog.sankara.net/posts/build…
🤖 Made with AI
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The name blends DRY ("Don't Repeat Yourself") and telescope: look across a large repo and bring the repetition or overlap worth inspecting into view. PyPI: pypi.org/project/dryscope/ GitHub: github.com/kvsankar/dryscope…

dryscope

Code duplicate and documentation overlap detection

pypi.org
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Now you can compare any two lunar missions in the Earth Moon relative reference frame using my animation at sankara.net/astro/lunar-miss… - Here's one comparing Artemis 1 and 2. - @tony873004 @Marco_Langbroek
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Professor @Marco_Langbroek , I have put together an interactive 3D animation of Artemis 2 mission orbit along with the ground track here - sankara.net/astro/lunar-miss… . Orbit data is the latest version from JPL HORIZONS as of now. Shows the ground track + other interesting views.
Dr Marco Langbroek@Marco_LangbroekApr 9
1/x Just over one day to go untill #Artemis II splashes down near the California coast. Here is a map showing the ground-projected approach trajectory which I created using HORIZONS State Vector data and (for the very last bit) a Tudat ballistic continuation of the last vector
Map of the Pacific with the ground-projected approach trajectory of Artemis II before splashdown. Exclusion zones from Navigational Warning NAVAREA XII 232/26 shown in red, representing the Command Module reentry area (B) and the crew capsule splashdown area (A)

ALT Map of the Pacific with the ground-projected approach trajectory of Artemis II before splashdown. Exclusion zones from Navigational Warning NAVAREA XII 232/26 shown in red, representing the Command Module reentry area (B) and the crew capsule splashdown area (A)

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Comparing the real Artemis II image and the one from my animation web site - sankara.net/astro/lunar-miss…
Sankaranarayanan Viswanathan@kvsankarApr 6
Replying to @kvsankar
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Comparing the real Artemis II image and the one from my animation web site - sankara.net/astro/lunar-miss… xitter.cf/kvsankar/status/204152…
Sankaranarayanan Viswanathan@kvsankarApr 6
Replying to @kvsankar
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#Artemis2 flyby simulation using JPL orbit data, realistic sky renders, and correct geometry sankara.net/astro/lunar-miss… @AJamesMcCarthy @Erdayastronaut @MarcusHouse

Artemis 2 Lunar Mission Orbit Animation

Artemis II is NASA's first crewed Artemis mission and the first time astronauts will fly Orion around the Moon.

sankara.net
Sankaranarayanan Viswanathan@kvsankarApr 6
What photographs can we expect to see from the #Artemis2 lunar flyby. You can simulate this at my website at sankara.net/astro/lunar-miss… 🧵 This is just before earth set around 22:45 @NASAArtemis @DJSnM @fcain @universetoday @NASASpaceflight
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What photographs can we expect to see from the #Artemis2 lunar flyby. You can simulate this at my website at sankara.net/astro/lunar-miss… 🧵 This is just before earth set around 22:45 @NASAArtemis @DJSnM @fcain @universetoday @NASASpaceflight
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End of eclipse
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New moon literally
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