spacewar.com
DARPA taps Raytheon for new maritime defense systemhttps://www.spacewar.com/reports/DARPA_taps_Raytheon_for_new_maritime_defense_system_999.htmlLos Angeles CA (SPX) Feb 03, 2026 Raytheon, an RTX business, has been selected by the US Defense Advanced Research Projects Agency to develop an advanced sensing and targeting system to protect commercial shipping and naval logistics vessels from emerging maritime threats such as unmanned surface vehicles. Under the Pulling Guard program, Raytheon s Advanced Technology team will design, build and demonstrate a system thatFeb 4, 2026 3:53 PM
github.com
Show HN: Self-hosted RAG with MCP support for OpenClawhttps://github.com/2dogsandanerd/ClawRagI've been using OpenClaw to control my home server via WhatsApp, but it couldn't access my documents. Instead of uploading my private contracts to OpenAI, I built ClawRAG – a self-hosted RAG engine that connects to OpenClaw via MCP (Model Context Protocol). Now I can ask "What did the contract say about liability?" and get cited answers, not hallucinations.Most RAG systems are either too complex for a solo dev's home setup or they rely on cloud-hosted vector stores. I needed something that runs in a single Docker container, understands messy PDFs (tables!), and integrates natively as a "tool" for agents rather than just another REST endpoint.## Technical Deep Dive### Why MCP instead of REST? I chose the Model Context Protocol (MCP) because it provides structured schemas that LLMs understand natively. The MCP server exposes `query_knowledge` as a tool, allowing the agent to decide exactly when to pull from the knowledge base vs. when to use its built-in memory. It prevents "tool-drift" Feb 1, 2026 4:45 PM
nasa.gov
White Dwarf Star (Artist’s Concept)https://www.nasa.gov/image-article/white-dwarf-star-artists-concept/A smaller white dwarf star (left) pulls material from a larger star into a swirling accretion disk in this artist’s concept released Nov. 19, 2025, to illustrate the first use of NASA’s IXPE (Imaging X-ray Polarization Explorer) to study a white dwarf star. IXPE spent nearly one week focused on EX Hydrae, a white dwarf […]Jan 12, 2026 5:34 PM
esa.int
Tiny patches of deforestation drive tropical carbon losshttps://www.esa.int/Applications/Observing_the_Earth/Space_for_our_climate/Tiny_patches_of_deforestation_drive_tropical_carbon_lossOften called Earth’s green lungs, tropical forests pull down massive amounts of carbon dioxide from the atmosphere, release oxygen and help regulate the global climate. While the threat of large-scale deforestation is well known, new findings reveal a surprising culprit – the clearance of small areas of forest accounts for more than half of net carbon losses across the Tropics.Jan 8, 2026 7:30 AM
spacedaily.com
Webb maps carbon rich atmosphere on distorted pulsar planethttps://www.spacedaily.com/reports/Webb_maps_carbon_rich_atmosphere_on_distorted_pulsar_planet_999.htmlBerlin, Germany (SPX) Dec 17, 2025 Scientists using NASA's James Webb Space Telescope have identified an exoplanet with an atmosphere unlike any seen before, orbiting a rapidly spinning neutron star known as a pulsar. The object, officially designated PSR J2322-2650b, has a mass comparable to Jupiter but is stretched into a lemon-like shape by the strong gravitational pull of its compact host star. Its atmosphere appears dominateDec 26, 2025 5:41 AM
spacedaily.com
White dwarf magnetic field study reveals inner accretion dynamicshttps://www.spacedaily.com/reports/White_dwarf_magnetic_field_study_reveals_inner_accretion_dynamics_999.htmlCambridge, MA (SPX) Nov 21, 2025 Some 200 light years from Earth, the core of a dead star is circling a larger star in a macabre cosmic dance. The dead star is a type of white dwarf that exerts a powerful magnetic field as it pulls material from the larger star into a swirling, accreting disk. The spiraling pair is what's known as an "intermediate polar" - a type of star system that gives off a complex pattern of intense radiatNov 26, 2025 9:07 AM
apps.apple.com
Show HN: I made a clipboard-triggered YouTube summarizer (no paste, 2 taps)https://apps.apple.com/us/app/esse-ai-video-summarizer/id6751778111How it works:Copy a YouTube link → open app → it auto-detects from clipboard, pulls metadata + transcript, and generates a structured summary (key points + narrative) in seconds. No inputs, no pasting, no prompting. Supports 60+ languages for summaries, the video's language doesn't matter.Why I built:I had an endless queue of educational videos but no time to sit through rambling or clickbait. ChatGPT flow = copy → open → paste → prompt → pray it formats correctly. Existing summarizers felt feature-bloated or unreliable. I wanted something super minimalist: “clipboard → value” on repeat.Decisions:Stack — React Native 0.81 (New Arch) + TypeScriptClipboard trick— Monitors clipboard on app start/resume — no manual pasteCaching— Stores transcripts + summaries in AsyncStorage with metadata— fast image library prevents repetitive refetchingAPIs— YouTube metadata— Third-party transcript provider (exploring Whisper)— OpenAI for summarizationOutput— Structured prompts → consistent format acrossOct 16, 2025 3:39 PM
coinstate.co
Show HN: Coinstate View crypto prices across multiple exchangeshttps://coinstate.coHey HN,Last month, I wanted to buy some Bitcoin and noticed something strange: the price was different on every exchange. Unlike the stock market, crypto doesn’t have one official price.I tried using CoinMarketCap and other sites to compare prices, but they didn’t really help. So, I built Coinstate a simple, free tool that lets you see and compare live crypto prices from many exchanges in one place.It currently pulls data from Binance, Coinbase, Kraken, OKX, KuCoin, HTX, Bybit, and Gate.io, with Crypto.com and Gemini coming soon. You can filter by trading pair, sort by price, and see near real-time updates, no signups, ads, or paywalls.It’s a small side project, but it’s helped me find better prices when buying or selling. I’d love your feedback or ideas for improvement.You can also sort by highest last, bid, or ask price. Here’s an example for Bitcoin: https://coinstate.co/compare/btc?sort=lastPriceOct 14, 2025 4:21 PM
news.ycombinator.com
Agent Knowledge Needs More Than Just RAGhttps://news.ycombinator.com/item?id=45435169When people talk about “knowledge for agents,” it almost always collapses into RAG. But knowledge can, and should—be treated as a first-class runtime tool, not just a context filler.In most implementations, knowledge lives in a vector database. Agents query it through a search_knowledge tool, often hybrid (keyword + semantic) with re-ranking. That’s essentially “Agentic RAG,” and it works well enough for a lot of use cases.But once you think of knowledge as runtime-accessible memory, other patterns open up:1. Dynamic Instructions Most serious agent use cases can’t just dump all instructions into the system prompt. Take a Text2SQL agent: it needs table schemas, column names, data types, and common query templates. You don’t bake all that into the core prompt—you store it and let the agent query the relevant slice when needed.That’s dynamic instructions: system prompt as RAM, knowledge base as disk. Core logic in RAM, path-specific instructions pulled from disk at runtime.2. Adaptive LeaOct 1, 2025 7:13 AM
totenarctanz.itch.io
Show HN: A PSX/DOS style 3D game written in Rust with a custom software rendererhttps://totenarctanz.itch.io/a-scavenging-tripSo, after years of abandoning Rust after the hello world stage, I finally decided to do something substantial. It started with simple line rendering, but I liked how it was progressing so I figured I could make a reasonably complete PSX style renderer and a game with it.My only dependency is SDL2; I treat it as my "platform", so it handles windowing, input and audio. This means my Cargo.toml is as simple as:[dependencies.sdl2] version = "0.35" default-features = false features = ["mixer"]this pulls around 6-7 other dependencies.I am doing actual true color 3D rendering (with Z buffer, transforming, lighting and rasterizing each triangle and so on, no special techniques or raycasting), the framebuffer is 320x180 (widescreen 320x240). SDL handles the hardware-accelerated final scaling to the display resolution (if available, for example in VMs it's sometimes not so it's pure software). I do my own physics, quaternion/matrix/vector math, TGA and OBJ loading.Performance: I have not spent aSep 17, 2025 2:39 AM
news.ycombinator.com
Launch HN: BitBoard (YC P25) – AI agents for healthcare back-officeshttps://news.ycombinator.com/item?id=44237769Hi HN! We’re Connor and Ambar, and we’re working on BitBoard (https://bitboard.work). We build AI agents that handle repetitive administrative tasks in healthcare clinics like filling out intake forms, prepping charts, or managing referrals.We were early employees at Forward, which provided primary care across the US. To scale this, we relied on thousands of remote contractors to do repetitive administrative work like reconciling patient records, and scheduling follow-ups based on care plans. It was a huge bottleneck—expensive, error-prone, and always pulling attention away from clinical care. Our software solutions were always too brittle, never managing to handle the variance of clinical data we oversaw.AI, when applied well, is capable of performing a lot of the tasks we manually did. So we decided to take another crack at the problem by building today what we would have liked to have back then, and to help clinics use it.Clinics send us their SOPs (Standard Operating Procedures—forJun 10, 2025 3:09 PM
kamalmanual.com
Show HN: I wrote a book on Kamal, deployment tool that's coming to Rails 8https://kamalmanual.com/handbook/Hi fellow readers of HN,Josef here again[0] with another book :). This time about Kamal.= BackgroundWhen 37signals released their new deployment tool Kamal[1], I was intrigued since it fits well with my 'keep it simple' deployment philosophy.I slowly adopted the tool and today I deploy all new projects with Kamal.However, I have seen people giving it a go and giving up, because the initial documentation was not enough.So I sat down for a few weeks and wrote Kamal Handbook, the missing manual to Kamal.= What's Kamal?Kamal is an imperative deployment tool. It's basically a successor to Capistrano, but for a container era. It's a simple wrapper around Docker and that's the whole beauty of it.37signals created Kamal to self-host Basecamp and Hey as part of their pull out of the cloud (running managed K8s).It's expected to become a default gem for 'rails new' in Rails 8.= Kamal HandbookKamal Handbook[2] is a short and to-the-point book on Kamal. I go through a first deploy, explain fundamenApr 4, 2024 3:21 PM
bing.com
How to Master Graphic Eyeliner, According to Makeup Artistshttp://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a89e539edab45db864e43e9b7cfd61d&url=https%3A%2F%2Fwww.glamour.com%2Fstory%2Fgraphic-eyeliner-trend&c=3373846849935793954&mkt=en-usGraphic eyeliner may seem super complicated, but almost anyone can pull it off at home—it just requires following a few rules of thumb. “Graphic liner is all about clean, sharp edges, bold color or ...Sep 28, 2022 1:10 PM
news.ycombinator.com
Show HN: Minimalist HN reader with material designhttps://news.ycombinator.com/item?id=9755681Hello everyone!, this is a app I have being working on recently. I know there are number of HN readers on android. But couldn't find a one suitable for daily use. So I started developing this app. News articles, comments open in default browser of the device. Click on title of the item to open the article and anywhere else to open comments. Pull down to refresh. Swipe left and right to change the tabs. This is only the first phase of application. Lot of functions yet to be implement (you can read more in Google play listing). Before developing further I would love to have some feedback. BTW I'm a CS undergraduate.Thank you.Image :http://www.kasungamlath.com/assets/hnyc_framed.png Application :https://play.google.com/store/apps/details?id=com.kasungamlath.hackernewsAny feedback is appreciated, thanks!Jun 22, 2015 1:12 AM
news.ycombinator.com
Ask HN: Need of a much better GitHub/Gitlab?https://news.ycombinator.com/item?id=7618161Github [1] has become slow and the hosted solution (enterprise version) is too costly, so we have been using Gitlab which is a Github like repository hosting platform that also has issue tracking and merge/pull request based workflow and integration with its CI (gitlab-ci project).In the past couple of months, we've been facing a lot of problems for example -- Gitlab has broken our development workflow (due to bugs in it), the web hooks would stop working, the merge request diffs would be too slow to load, sometimes the ruby based backend would blow up and give us 500 etc. So, we've started working on a single page webapp based on Go and AngularJS that just does minimalistic things that we need. We wanted a tool that is easy to manage and install so we chose Go (single binary) and we wanted to keep the frontend easy to implement and use so we chose AngularJS (single page app).What are the pain points you've faced while using these tools, and what features etc. you want in it and will yApr 20, 2014 7:30 PM
bing.com
Releasing a Stuck Anchorhttp://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a8983c2376145e5b106f0d39ecccd8f&url=https%3A%2F%2Fwww.boatingmag.com%2Fhow-to%2Freleasing-stuck-anchor%2F&c=539776366864108078&mkt=en-usYou’ve anchored for a while to relax, but when it comes time to pull up, the anchor won’t budge. Don’t stress over that stuck anchor. Try these tips for using the boat to break a stuck anchor free.Aug 30, 2012 4:55 PM
