The best Hacker News stories from All from the past day
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The iPhone Upgrade Program is being replaced by Apple Upgrade
<a href="https://www.apple.com/shop/apple-upgrade" rel="nofollow">https://www.apple.com/shop/apple-upgrade</a>
Kimi K3 Architecture Overview and Notes
How to survive boiling water
Codex Security
Codex Security
Substack writers, you need a website
Substack writers, you need a website
New HIV vaccine shows unprecedented success in preclinical study
7.1 Earthquake in Japan
Apple Will 'Watch Everything Burn' When the AI Bubble Bursts
Show HN: Physically accurate black hole you can put in your room
We have a black hole at home — with actual relativistic physics, live in your browser.<p>I'm Sasha (Alexander) Plavin, an astrophysicist at Harvard's Black Hole Initiative studying quasars and black hole environments. I work with raytracing/radiative transfer simulations professionally, and wanted to make one anyone can play with — so I built this app.<p>Put the black hole onto your screen (any browser), or directly into your room with AR or VR (requires WebXR, for example Chrome on Android, or any VR headset). When looking around, pay attention to unintuitive relativistic effects: rays bending around the black hole, and special relativistic "Doppler boosting" changing brightness depending on the viewing angle — zoom out to see the fast jet where the latter effect is especially pronounced.
Faint markers show where other viewers are standing right now.<p>Alternatively, put the black hole in front of your camera and watch it lens
your actual surroundings. Light winds around the hole, so you see both what's in front of you and what's behind you at once (when the device and browser allow both camera feeds). The closer to the black hole, the stronger the bending — and the longer the light-travel delay: wave at it and watch the changes propagate inward.
(unfortunately, WebXR restrictions make AR passthrough and the camera feed mutually exclusive)<p>No signup, basic features work on every device, no data uploaded — the camera feed never leaves your device. Source code: <a href="https://github.com/aplavin/blackhole.plav.in" rel="nofollow">https://github.com/aplavin/blackhole.plav.in</a>.<p>Enjoy having a black hole in your room, or use it for education/outreach — any questions, feedback, or suggestions are welcome!
How is the Bun rewrite in Rust going?
PGSimCity - How PostgreSQL Works
AI companies are shredding rare books
<a href="https://xcancel.com/HedgieMarkets/status/2081534588485296565" rel="nofollow">https://xcancel.com/HedgieMarkets/status/2081534588485296565</a>
Kimi-K3 on HuggingFace
Related: <i>Kimi-K3 Technical Report [pdf]</i> - <a href="https://news.ycombinator.com/item?id=49070985">https://news.ycombinator.com/item?id=49070985</a>
Our position on open-weights models
Our position on open-weights models
US citizen charged after GrapheneOS phone wipes during airport search
Ruff v0.16.0 – Significant new updates – 413 default rules up from 59
What is happening to jobs? Separating AI hype from reality