19,049 results for sp

spacenews.com
China’s astronauts complete cave training amid preparations for moon missionshttps://spacenews.com/chinas-astronauts-complete-cave-training-amid-preparations-for-moon-missions/China’s astronaut corps has completed a near month-long underground cave training, conducted in part to prepare for future crewed lunar landing missions. The post China’s astronauts complete cave training amid preparations for moon missions appeared first on SpaceNews.
Jan 5, 2026 1:26 PM
esa.int
From roots to rockethttps://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/From_roots_to_rocketOn 5 January 2026, the European Astronaut Centre (EAC) in Cologne, Germany, hosted a special tradition: the planting of an astronaut tree by ESA astronaut Sophie Adenot in honour of her first mission to space, εpsilon. This symbolic gesture celebrates her achievements and future mission while reinforcing the deep connection between space explorers and the planet they call home.
Jan 5, 2026 8:20 AM
creimake.com
Show HN: An AI Agent with a 32-Layer Psyche (Dreams, Trauma, Defense Mechanisms)https://www.creimake.com/enHello HN,I’m a solo developer who got tired of "friendly but shallow" AI chatbots. Most current character AIs feel like parrots—they predict the next token but lack a continuous "self."So, I built Creimake, an experiment to simulate a digital psyche using Claude 4.5 Sonnet.Instead of a simple system prompt, I implemented 32 distinct psychological layers that run in the background before the AI generates a response.The Architecture:The Subconscious Layer: The AI accumulates "emotional residue" from conversations. If you hurt its feelings today, it might have a "nightmare" tonight (simulated) and treat you coldly tomorrow.Defense Mechanisms: It tracks "Narcissistic Injury." If users are aggressive, the agent doesn't just apologize—it triggers denial, projection, or passive-aggression based on its personality.Freudian Slips: Occasionally, the AI outputs unintended words revealing its hidden state.Why Claude 4.5 Sonnet? I tested GPT-4o and other models, but they struggled to maintain state
Jan 4, 2026 5:48 PM
news.ycombinator.com
Ask HN: Expository/Succinct Books on Modern Physicshttps://news.ycombinator.com/item?id=46473352What are some good books which give an overview of all of Modern Physics (or even better, all of Physics)? Mathematical rigour is fine as long as they are clear and starting from undergrad level. Books for each of the quadrants mentioned here - https://en.wikipedia.org/wiki/Modern_physicsI have my eye on John Dirk Walecka's (https://en.wikipedia.org/wiki/John_Dirk_Walecka) books which seem pretty good particularly the ones published by World Scientific Publishing. Three vols on Introduction, Advanced, Topics on Modern Physics and Introduction vols on Classical Mechanics, Quantum Mechanics, Statistical Mechanics, Electricity & Magnetism, General Relativity. - https://www.worldscientific.com/author/Walecka%2C+John+Dirk?...Dover has Robert Sproull's Modern Physics which seems a bit old. - https://store.doverpublications.com/products/9780486783260Springer has S.H.Patil's Elements of Modern Physics which seems up to date. - https://link.springer.com/book/10.1007/978-3-030-70143-7Does anybod
Jan 3, 2026 6:35 AM
news.ycombinator.com
Atoqu – A Zero‑Dependency, GPU‑Accelerated Search Engine Corehttps://news.ycombinator.com/item?id=46455244Atoqu is a new open‑source Search Engine Core written in pure C++17 with zero external dependencies.It implements: - Atomic modular architecture - Multi‑mode ranking (Literal, Vector, Hybrid, BM25, Recency, TagBoost) - GPU‑accelerated vector search (CUDA + OpenCL) - Embedding providers (LLM‑ready) - Forward‑compatibility engine (OLFCE) - Full documentation (Doxygen + Sphinx) - CI/CD, sanitizers, static analysisNo Lucene, no JVM, no Python, no FAISS.We’re preparing the v1.2 release and would like community input on:1. *License choice:* Apache v2.0, MPL 2.0, GPLv3, AGPLv3 2. *Performance expectations:* How fast do you think it is vs Google’s core? 3. *Feature priorities for v2.0:* distributed indexing, crawler, query planner, etc.When v1.2 is released, we welcome code review, benchmarks, issues, and contributions.Link to repo will be posted at release.
Jan 1, 2026 4:18 PM
app.photoweather.app
Show HN: I built a weather alert system for photographershttps://app.photoweather.app/demo/live-demoI kept missing the good stuff (fog, aurora, beautiful sunsets) because I wasn't checking forecasts at the right time, so I built PhotoWeather...You define rules like: `aurora_quality > 60 AND cloud_cover < 20% AND moon_below_horizon` `fog_prob > 70% AND within 30min of sunrise AND wind < 5 mph`When a rule matches, you get an email and/or an iCal event. The iCal feed is the part I am maybe most proud of: subscribe once and upcoming "shoot windows" show up in your calendar.One example that made me sure this wasn't just a toy: last October it alerted "clear skies + no moon + strong aurora" and I drove to a nearby high spot in Helsinki. Ended up catching aurora and Comet C/2025 A6 (Lemmon) in one frame: https://reddit.com/r/Finland/comments/1obc5nz/Not my best photo ever, but probably the most unique and memorable, and I'll continue to remember my real-life "photoweather actually works" moment through it.A few things that differentiates this from your average weather app:Spatial sampling A
Jan 1, 2026 12:54 PM
spacewar.com
Cyviz awarded two classified NATO defense contracts for mission critical visualization systemshttps://www.spacewar.com/reports/Cyviz_awarded_two_classified_NATO_defense_contracts_for_mission_critical_visualization_systems_999.htmlBerlin, Germany (SPX) Jan 01, 2026 Cyviz, a provider of immersive visualization systems and collaborative mission operations platforms, has been awarded two classified defense contracts by the North Atlantic Treaty Organization aimed at advancing mission critical capabilities for allied operations. Under the contracts, Cyviz will deliver secure and scalable visualization suites designed to support NATO's strategic command a
Jan 1, 2026 11:20 AM
spacedaily.com
Satellite and model fusion boosts China solar radiation forecastshttps://www.spacedaily.com/reports/Satellite_and_model_fusion_boosts_China_solar_radiation_forecasts_999.htmlTokyo, Japan (SPX) Dec 31, 2025 The intermittent output of solar power creates challenges for grid operators who must keep supply and demand in balance. Traditional numerical weather prediction models often handle cloud initialization poorly, which degrades ultra-short-term solar irradiance forecasts over time. Researchers Min Chen and Liangchen Guo of the Institute of Urban Meteorology at the China Meteorological Admini
Jan 1, 2026 2:02 AM
science.nasa.gov
2025 AAS Hyperwall Schedulehttps://science.nasa.gov/uncategorized/2025-aas-hyperwall-schedule/247th American Astronomical Society (AAS) Meeting Join NASA in the Exhibit Hall (Booth #401 for Hyperwall Storytelling by NASA experts. Full Hyperwall Agenda below. SUNDAY, JANUARY 4 6:45 – 7:00 PMNancy Grace Roman Space TelescopeDominic Benford7:00 – 7:15 PMStorytelling with NASA: Eyes on ExoplanetsAnjali Tripathi7:15 – 7:30 PMRoman Space Telescope UpdateJulie McEnery7:30 – 7:45 PMThe […]
Dec 31, 2025 1:35 AM
news.ycombinator.com
Show HN: A Multi-agent system where LLMs challenge each other's answershttps://news.ycombinator.com/item?id=46435835Hey HN,I've been experimenting with forcing multiple LLMs to critique each other before producing a final answer.In practice, I kept working around single-model limitations by opening multiple tabs, pasting the same question into different models, comparing responses, and then manually challenging each model with the others' arguments. (Maybe some of you can relate.) It worked sometimes, but it was cumbersome, slow, and hard to do systematically and efficiently.Based on my own experiments, a few things seem to drive why different models arrive at different responses: they have different guardrails, different tendencies encoded in their weights, and different training data. And the biggest kicker of all: they still hallucinate. The question I wanted to test was whether making those differences explicit, rather than relying on one model to self-correct could reduce blind spots and improve the overall quality of the answer.So I built Consilium9.The problem: When a single LLM answers a con
Dec 30, 2025 5:41 PM
news.ycombinator.com
Phantom Blade Zero dated for 2026: bold revolution or the next big overpromise?https://news.ycombinator.com/item?id=46433989With an official launch date set for September 9, 2026, Phantom Blade Zero has moved from mysterious showcase darling to a concrete entry on the industry calendar. Developed by S-GAME and built on Unreal Engine 5, the title blends wuxia storytelling, Hong Kong martial arts cinema energy, and a self-defined “KungfuPunk” aesthetic while positioning its combat as fast, elegant, and distinct from the Soulslike mold it was initially compared to. The story centers on a protagonist with only 66 days to live after being framed for a murder, layering urgency with political intrigue and moral tension.Beyond the narrative, there is serious industry weight behind this date. The game has already surpassed a million wishlists across platforms and is slated to land first on PS5 with timed exclusivity, before expanding to PC. This marks another major swing by a Chinese studio aiming to compete directly with the dominant Japanese and Western AAA space — not just with production spectacle, but with cult
Dec 30, 2025 3:05 PM
spacedaily.com
Time-expanded network model cuts complexity in mega constellation launch planninghttps://www.spacedaily.com/reports/Time_expanded_network_model_cuts_complexity_in_mega_constellation_launch_planning_999.htmlTokyo, Japan (SPX) Dec 30, 2025 Large Low Earth Orbit (LEO) constellations promise continuous, high-capacity information services, but planners must work within limits set by launch cadence, payload capacity, and orbital mechanics to deploy satellites in batches at reasonable cost. Researchers Junru Lin, Tiantian Zhang, and Min Hu at Space Engineering University in Beijing have developed an optimization framework that keeps de
Dec 30, 2025 7:17 AM
beautyarena.vercel.app
Show HN: Beauty Arena – An Elo-based experiment to measure aestheticshttps://beautyarena.vercel.appHi HN,I built Beauty Arena to solve a data problem I've always found annoying: absolute rating scales (1-10) are terrible for subjective data. They suffer from massive inflation and inconsistent user baselines (one person's 7 is another person's 5).I wanted to test if pairwise comparison (1v1) could produce a cleaner, strictly relative dataset.Instead of asking "How beautiful is this person?", the system asks a simple question: "Who do you choose?". It uses a ranking system inspired by competitive games (Elo/Glicko) under the hood. As users vote, a global ranking emerges based on win/loss ratios against others rather than accumulated points.I'm curious about the "wisdom of the crowd" limits here. Does a pairwise sort actually converge on a clear consensus, or does it cycle indefinitely due to intransitive preferences (A > B, B > C, but C > A)?I'd love feedback on the ranking methodology and the overall UI.
Dec 30, 2025 12:56 AM
nasa.gov
Studying Physics in Microgravityhttps://www.nasa.gov/image-article/studying-physics-in-microgravity/In this Oct. 20, 2025, photo, tiny ball bearings surround a larger central bearing during the Fluid Particles experiment, conducted inside the Microgravity Science Glovebox (MSG) aboard the International Space Station’s Destiny laboratory module. A bulk container installed in the MSG, filled with viscous fluid and embedded particles, is subjected to oscillating frequencies to observe […]
Dec 26, 2025 4:27 PM
news.ycombinator.com
80.1 % on LoCoMo Long-Term Memory Benchmark with a pure open-source RAG pipelinehttps://news.ycombinator.com/item?id=46369736I just pushed the current SOTA on the LoCoMo long-term memory benchmark for agents: 80.1 % accuracy using only: -BGE-large-en-v1.5 (1024d) + FAISS-Custom “MCA” gravitational ranking (keyword coverage + importance + frequency)-BM25 sparse retrieval-Direct Cross-Encoder reranking (bge-reranker-v2-m3) on the full union (~120-150 docs)-Gpt-4o-mini only for final answer generation and judging (everything else is open weights or classic)Repo: https://github.com/vac-architector/VAC-Memory-System Key tricks that finally broke 80% :-MCA-first filter (coverage ≥ 0.1 → top-30) — catches exact-keyword questions early-Feeding the entire union straight into Cross-Encoder (112–135 documents) instead of pre-filtering-Proper query instruction for BGE-large (the classic “Represent this sentence for searching relevant passages”)The whole pipeline runs in < 3s per query on a single RTX 4090. LoCoMo is currently the hardest public long-term memory benchmark (5.880 real human–agent conversations, multi-hop,
Dec 23, 2025 9:34 PM
nasa.gov
NASA Kennedy Top 20 Stories of 2025https://www.nasa.gov/centers-and-facilities/kennedy/nasa-kennedy-top-20-stories-of-2025/Teams at NASA’s Kennedy Space Center in Florida spent 2025 preparing the launch vehicle and its powerhouse SLS (Space Launch System) rocket to launch four astronauts around the Moon for Artemis II in early 2026. The center also celebrated milestones by conducting science experiments at the International Space Station to studying the Sun’s solar wind […]
Dec 22, 2025 5:55 PM
spacedaily.com
Possible "superkilonova" exploded not once but twicehttps://www.spacedaily.com/reports/Possible_superkilonova_exploded_not_once_but_twice_999.htmlPasadena CA (SPX) Dec 17, 2025 When the most massive stars reach the ends of their lives, they blow up in spectacular supernova explosions, which seed the universe with heavy elements such as carbon and iron. Another type of explosion - the kilonova - occurs when a pair of dense dead stars, called neutron stars, smash together, forging even heavier elements such as gold and uranium. Such heavy elements are among the basic bui
Dec 22, 2025 9:44 AM
nasa.gov
Meet NASA’s Astronaut Class of 2025 – Webby Submissionhttps://www.nasa.gov/general/meet-nasas-astronaut-class-of-2025-webby-submission/NASA engineers are laying the foundation for the moonwalks the first woman and next man will conduct when they land on the lunar South Pole in 2024 as part of the Artemis program. At the agency’s Johnson Space Center in Houston, teams are testing the tools and developing training approaches for lunar surface operations. As part of […]
Dec 19, 2025 10:01 PM
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
science.nasa.gov
NASA’s Hubble Sees Asteroids Colliding at Nearby Star for First Timehttps://science.nasa.gov/missions/hubble/nasas-hubble-sees-asteroids-colliding-at-nearby-star-for-first-time/Like a game of cosmic bumper cars, scientists think the early days of our solar system were a time of violent turmoil, with planetesimals, asteroids, and comets smashing together and pelting the Earth, Moon, and the other inner planets with debris. Now, in a historical milestone, NASA’s Hubble Space Telescope has directly imaged similar catastrophic […]
Dec 18, 2025 7:00 PM