30,483 results for do

nasa.gov
NASA’s Wideband Technology Demo Proves Space Missions are Free to Roamhttps://www.nasa.gov/humans-in-space/commercial-space/nasas-wideband-technology-demo-proves-space-missions-are-free-to-roam/Just like your cellphone stays connected by roaming between networks, NASA’s Polylingual Experimental Terminal, or PExT, technology demonstration is proving space missions can do the same by switching seamlessly between government and commercial communications networks.
Dec 19, 2025 7:57 PM
nasa.gov
Water Droplet Sciencehttps://www.nasa.gov/image-article/water-droplet-science/NASA astronaut Don Pettit demonstrates electrostatic forces using charged water droplets and a knitting needle made of Teflon. This series of overlapping frames from Feb. 19, 2025, displays the unique attraction-repulsion properties of Teflon and charged droplets, similar to how charged particles from the Sun behave when they come in contact with Earth’s magnetic field. […]
Dec 19, 2025 5:43 PM
news.ycombinator.com
Geometric derivation of the muon g-2 anomaly (63 ppm discrepancy)https://news.ycombinator.com/item?id=46327402The Standard Model calculation of g-2 requires thousands of Feynman diagrams. This geometric model derives it from the topology of the lepton (icosahedron, 12 vertices). It posits the muon anomaly is the sum of the surface cost (Schwinger term) and the nodal friction against the 12 vertices: α = 0.00729735256 N_v = 12 Schwinger_term = α / (2 · π) Nodal_term = α^2 / 12 a_mu = Schwinger_term + Nodal_term Schwinger_term = α / (2 · π) ≈ 0.001161409 Nodal_term = α^2 / 12 ≈ 0.000004438 Total ≈ 0.001165847 Experimental value: 0.001165920 Discrepancy: 63 ppm Source: Geometric Unification of Physical Interactions, v10. https://doi.org/10.5281/zenodo.17847770
Dec 19, 2025 4:14 PM
github.com
Show HN: Ayder HTTP-native durable event log in C (50K msg/s, P99 3ms, Raft HA)https://github.com/A1darbek/ayderHi HN — I built Ayder, a single-binary durable event log / message bus in C. The idea: what if event streaming was just HTTP? # Produce curl -X POST 'localhost:1109/broker/topics/orders/produce' -d '{"item":"widget"}' # Consume curl 'localhost:1109/broker/consume/orders/mygroup/0?encoding=b64' No JVM, no ZooKeeper, no thick client libraries. Just HTTP.What it does: append-only log with per-partition offsets, consumer groups, durable writes via sealed AOF + crash recovery, HA with Raft consensus (3/5/7 nodes), leader redirects, idempotent produce, KV store with CAS + TTL.Benchmarks (real network, 3-node Raft, DigitalOcean 8 vCPU, wrk2, 64B payload): Throughput: 50,000 msg/s sustained P50: 1.58ms | P99: 3.35ms | P99.9: 8.62ms Server-side P99.999 is 1.2ms — the tail you see in benchmarks is network/kernel, not the broker.Curious finding: real NIC beats loopback at high concurrency (P99 3.31ms vs 5.79ms). Makes sense — loopback means client and server fight for CPU cores.I'd love feedback
Dec 19, 2025 2:42 PM
robodaily.com
"Robot, make me a chair" robot-make-me-a-chair-in-six-promptshttps://www.robodaily.com/reports/Robot_make_me_a_chair_999.htmlBoston MA (SPX) Dec 17, 2025 Computer-aided design (CAD) systems are tried-and-true tools used to design many of the physical objects we use each day. But CAD software requires extensive expertise to master, and many tools incorporate such a high level of detail they don't lend themselves to brainstorming or rapid prototyping. In an effort to make design faster and more accessible for non-experts, researchers from MIT
Dec 19, 2025 11:01 AM
bing.com
Netflix estrena ‘La hora de los valientes’, el remake de ‘Tiempo de valientes’http://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a8aa102ef6749b3b73e4953c47ef25d&url=https%3A%2F%2Fwww.cronica.com.mx%2Fescenario%2F2025%2F12%2F19%2Fnetflix-estrena-la-hora-de-los-valientes-el-remake-de-tiempo-de-valientes%2F&c=3894311071070547488&mkt=en-us“La hora de los valientes” es la nueva película mexicana que llegó a Netflix este 19 de diciembre de 2025 y que ha encendido el interés de cinéfilos interesados en recientes producciones. Más que un ...
Dec 19, 2025 8:34 AM
bing.com
First Week of February 2026 Options Trading For Alliant Energy (LNT)http://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a88d2760d6d41aea0cf836ac76856d9&url=https%3A%2F%2Fwww.nasdaq.com%2Farticles%2Ffirst-week-february-2026-options-trading-alliant-energy-lnt&c=11181657317064073541&mkt=en-usInvestors in Alliant Energy Corp (Symbol: LNT) saw new options become available this week, for the February 2026 expiration. At Stock Options Channel, our YieldBoost formula has looked up and down the ...
Dec 19, 2025 7:44 AM
news.ycombinator.com
I built a tool to stop wasting hours on LinkedIn outreach messageshttps://news.ycombinator.com/item?id=46322924I've been doing cold outreach on LinkedIn for two years. Not at scale — maybe 10-15 messages a day to potential customers.The problem was never finding people to message. LinkedIn search works fine. Sales Navigator exists. Referrals happen.The problem was opening their profile and... staring."Okay, they're a VP of Engineering at a Series B company. They posted about technical debt last week. How do I not sound like every other person in their inbox?"Delete. Rewrite. Check if it's too long. Too short. Too salesy. Not specific enough.Forty-seven minutes later, I'd written four messages.The real issueMost outreach tools solve the wrong problem. They give you:Templates with merge tags ({{firstName}} works at {{company}}) Auto-send features that violate LinkedIn's ToS Bulk sequence automationBut that's not where I was stuck. I knew WHO to message. I just couldn't figure out WHAT to say without it taking forever.ChatGPT didn't help much either. It would give me generic garbage unless I spent
Dec 19, 2025 6:49 AM
bing.com
I replaced my entire Microsoft 365 subscription with free open-source appshttp://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a8cd289dd464396b0e2e29bd229690e&url=https%3A%2F%2Fwww.xda-developers.com%2Freplaced-entire-microsoft-365-subscription-with-free-open-source-apps%2F&c=15988502364760730271&mkt=en-usParth, a seasoned tech writer, wields the keyboard (or pen) with finesse to unravel the intricacies of both Windows and Mac operating systems. He has covered evergreen content on mobile devices and ...
Dec 19, 2025 6:40 AM
news.ycombinator.com
Show HN: Interlock – Circuit breaker for AI infrastructure with signed auditshttps://news.ycombinator.com/item?id=46321932Interlock is a drop-in circuit breaker for AI systems (Express, FastAPI, core library) that tracks confidence, refuses low-certainty responses, and generates cryptographically signed certification artifacts and incident logs. It includes CI-driven stress tests, a certification badge, and reproducible benchmarks. Repo + quickstart: https://github.com/CULPRITCHAOS/InterlockWhat it doesTracks AI confidence, hazards, and triggers a reflex (refuse/degrade) rather than silently returning incorrect answers. Produces tamper-evident audit trails (HMAC-SHA256 signed badges, incident logs, validation artifacts). Ships middleware for Express and FastAPI; adapters for 6 vector DBs (Pinecone, FAISS, Weaviate, Milvus, LlamaIndex, LangChain). CI workflows to test, stress, benchmark, and auto-generate certification badges. Evidence artifacts are preserved and linkable. Why it mattersMany systems log “success” when an LLM confidently hallucinates. Audit trails and refusal policies matter for safety, com
Dec 19, 2025 3:16 AM
nasa.gov
Payrollhttps://www.nasa.gov/centers-and-facilities/nssc/payroll/The NASA Shared Services Center (NSSC) Payroll Office (NPO) reviews, validates, and delivers time and attendance data to the Department of the Interior (DOI) Interior Business Center (IBC) for NASA Centers. NPO acts as liaison between Centers, employees and IBC for other payroll related activities such as supplemental payments, prior pay period adjustments (PPPA) and […]
Dec 18, 2025 4:36 PM
github.com
Show HN: OmnAI – Sovereign AI infrastructure with multi-vault isolationhttps://github.com/TadTanyaTalaTadenTadhgTaya/OmnAI-v3.5Hey HN! I built OmnAI because enterprises keep telling me they can't deploy AI due to compliance barriers.The problem: Defense contractors need air-gapped LLMs. Hospitals want AI but fear HIPAA violations. Banks need audit trails for every AI decision. Current solutions either lock you into cloud providers or leave you on your own for security.OmnAI provides: - 16 isolated vaults using gVisor sandboxing (zero data leakage between tenants) - Trust-based governance - mandatory human review when confidence drops below 0.90 - Three deployment tiers: SUPERFLY (air-gap/DoD IL6), SOVEREIGN (on-prem/finance), EXCEED (hybrid/R&D) - Compliance-ready architecture (FedRAMP, HIPAA, SOC, ITAR)Technical stack: vLLM/Triton for inference, offline PKI with AES-GCM-256, per-vault fine-tuning pipelines.It's in pilot state - I'm looking for feedback on whether this architecture resonates with production AI challenges you're seeing, especially around data sovereignty and regulatory compliance.https://github
Dec 18, 2025 3:19 PM
spacenews.com
The Army’s contribution to joint space operationshttps://spacenews.com/the-armys-contribution-to-joint-space-operations/Recent analysis by Reeves in the Mitchell Institute’s “Charting a Path to Space Superiority: The Cross-Domain Imperative” identifies the need for centralized command and control (C2) of counterspace capabilities under U.S. Space Command to ensure unity of effort. However, Reeves’s critique of the United States Army’s development of counterspace capabilities fundamentally misunderstands the Army’s role […] The post The Army’s contribution to joint space operations appeared first on SpaceNews.
Dec 18, 2025 1:00 PM
spacedaily.com
Galactic Slots: Space-Themed Games with Out-of-This-World Bonus Featureshttps://www.spacedaily.com/reports/Galactic_Slots_Space_Themed_Games_with_Out_of_This_World_Bonus_Features_999.htmlLos Angeles CA (SPX) Dec 15, 2025 Space-themed sweepstakes slots have become a standout genre for players who crave mystery, exploration, and cinematic visuals. These games create entire universes inside their reels - from glowing nebula fields to alien planets and interstellar soundscapes.
Dec 18, 2025 4:03 AM
spacedaily.com
Philosopher argues AI consciousness may remain unknowablehttps://www.spacedaily.com/reports/Philosopher_argues_AI_consciousness_may_remain_unknowable_999.htmlLondon, UK (SPX) Dec 18, 2025 A University of Cambridge philosopher argues that current evidence about consciousness is too limited to determine whether artificial intelligence becomes conscious, and that a reliable test for machine consciousness is unlikely to emerge for a long time, if at all. Dr Tom McClelland contends that as artificial consciousness moves from science fiction into an ethical concern, the only justifiabl
Dec 18, 2025 4:03 AM
news.ycombinator.com
Looking for a Remote Job in Python/Django/Flaskhttps://news.ycombinator.com/item?id=46303378Hello there! My name is Tambe Hanslett. I'm a self-taught software developer. I'm currently seeking a part-time or full-time remote position. I'm open to backend or frontend roles. I'm also available for contract jobs. Visa sponsored Offers are also on my list if available.For Contract-based Jobs I charge between 10-60$/hourOne-time Projects: Price is NegotiableMy Preferred Stack Backend: Python, Django, Flask Frontend: html/css/js, Vue.js Database: Postgresql, MySQL, MongoDB(work in progress) Other tools: Redis Cache, Docker, Git, GitHub, GraphQL OS: Linux(90% of the time), Windows My Dev Environment: Ubuntu Linux, Tmux, Neovim, i3-wmOther tech stacks I've used in the pastFrontend + Backend php, Laravel, Inertia.js + Vue.jsDesktop Application Development PyQT, Pyinstaller Some projects I've completed and hosted for some clients I worked with in the pastClient Projects 1. https://sibast.org [Laravel + inertiajs] 2. https://www.dirthunterscleaningservices.us/ [Python, Flask, GraphQl] 3.
Dec 17, 2025 6:23 PM
news.ycombinator.com
Launch HN: Kenobi (YC W22) – Personalize your website for every visitorhttps://news.ycombinator.com/item?id=46301865Hey HN! We’re Rory, Chris, and Felix from Kenobi (https://kenobi.ai). Kenobi lets you add AI-based content personalization to any website. As a site owner, you install our personalization widget with a script tag, just like you would for e.g. a chatbot integration. As a visitor, you interact with the widget (right now by providing a company name) and Kenobi changes the site content to suit you.We’ve built a demo that anyone can try here: https://kenobi.ai/startWe believe that large parts of the web are about to go from being static to dynamic because of how adept LLMs are at transforming rendered HTML. And right now we’re focussing on B2B landing page content (as opposed to application UIs) because there is a lot of commercial opportunity for increasing top-of-funnel inbound conversions.Our journey to Kenobi today is a long and snaking one. You may notice from the post title that we did YC’s Winter 2022 batch (I know that 4 years is practically ancient in YC-dog-years). Kenobi is a har
Dec 17, 2025 4:44 PM
github.com
Show HN: I built a deterministic vector DB kernel in Rust using fixed-point mathhttps://github.com/varshith-Git/Valori-KernelWhile building a vector database in Python (valori: https://pypi.org/project/valori/), I ran into a bug that took longer than I want to admit.The same embeddings, indexed on macOS and Windows, would sometimes produce slightly different nearest-neighbor results. Nothing dramatic but enough to break tests and make snapshots non-reproducible.At first I assumed it was my code. Then I realized the problem wasn’t my logic at all it was "floating-point math".Different CPUs, different compilers, FMA instructions, and subtle differences in IEEE behavior meant that “the same” computation wasn’t actually the same everywhere.That sent me down a rabbit hole.The idea:Instead of trying to fight floating-point nondeterminism, I asked a simpler question:What if the core of a vector system never used floats at all?So I built a small kernel in Rust that uses fixed-point arithmetic (Q16.16) for all vector math. No floats in the core. No randomness. No architecture-dependent behavior.Same inputs → same sta
Dec 17, 2025 8:18 AM
chromewebstore.google.com
Show HN: Better Gmail Tabs – turn search queries into tabs for fast email loadhttps://chromewebstore.google.com/detail/better-gmail-tabs/ffgbhpheihcopgdlgbabanhbgemohjgcGithub repo: https://github.com/jharohit/better-gmail-tabsGiven how we use widescreen aspect ratios today, a tab interface has been significantly more faster to separate out emails quickly!~~~~~Key Features:- Custom Tabs: Create tabs for any Gmail label or search query.- Seamless Integration: Tabs appear directly in the Gmail interface for quick access.- Customization: Rename tabs and change their text/background colors to organize your workflow visually.- Automatic Coloring: New tabs are automatically assigned unique, complementary color combinations (random background with high-contrast text) so you don't have to manually pick colors every time.- Context Menu: Right-click any tab to rename, recolor, or delete it. Admin Panel: Click the settings gear icon to manage all your tabs in one place.- Smart Navigation: Automatically detects if you are viewing a label or a search result when creating a tab.- Export & Import: Backup your tab configurations or share them across devices using JSO
Dec 17, 2025 3:49 AM
github.com
Show HN: Clamp – Git-like version control for RAG vector databases (CLI/Python)https://github.com/athaapa/clampHi HN,I built this because I thought it was weird that we treat vector DBs like mutable buckets instead of versioned knowledge bases. RAG apps break easily when embeddings drift, and I wanted `git checkout` for my vectors.Clamp lets you commit and rollback your vector DB state without copying data. It works by managing metadata flags on points, so "rollbacks" are just instant filter updates, even for large collections.Basic flow: $ clamp init $ clamp commit docs.txt my_kb "v1 - initial" $ clamp checkout my_kb HEAD~1 # Instant revertIt's a CLI/Python wrapper around Qdrant right now. I'm a student at UW and built this to learn more about vector storage internals.Code: https://github.com/athaapa/clamp PyPI: https://pypi.org/project/clamp-rag/Happy to answer questions about the implementation!
Dec 17, 2025 3:27 AM