--- id: "2026-10-08-claude-science-complete-uv-sky-map" url: "https://postcutoff.com/e/2026-10-08-claude-science-complete-uv-sky-map/" as_of: "2026-10-09T19:24:00+02:00" date: "2026-10-08" date_precision: day category: science importance: 2 confidence: high status: [Event confirmed, Awaiting review] verification: Unverified claim sources: 3 editor: Adam Bicz human_review: null version: null --- As of: 2026-10-09 19:24 CEST. Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz. Canonical page: https://postcutoff.com/e/2026-10-08-claude-science-complete-uv-sky-map/ # Claude Science builds a complete ultraviolet map of the sky Full title: Agents in Claude Science build what Anthropic calls the first complete map of the sky in ultraviolet light, filling GALEX's gaps from Gaia and Planck data On Oct 8, 2026 Anthropic published a post by Johns Hopkins astrophysicist Brice Ménard (also an Anthropic researcher) describing how many Claude agents working in Claude Science assembled a full-sky ultraviolet map. They combined NASA's GALEX observations (about two-thirds of the sky) with Swift, FIMS/SPEAR and TD-1 data and predicted the missing third from Gaia stars and Planck dust maps. On held-out sky regions the predictions came within about 10% of the real UV measurements. The interactive map is public; no paper or peer review is mentioned. ## Key facts - Published Oct 8, 2026 on Anthropic's research blog; author Brice Ménard, 'an astrophysicist at Johns Hopkins University and a researcher at Anthropic' - Inputs: NASA GALEX (about 38,000 observations covering roughly two-thirds of the sky), NASA Swift, the Korean FIMS/SPEAR instrument, the European TD-1 satellite, and ESA's Gaia and Planck catalogs and maps - Output: an all-sky map in the far-UV (~154 nm) and near-UV (~232 nm) bands; about a third of the sky is 'inpainted' (predicted), using more than 100 million Gaia stars and Planck dust data - Check: in deliberate occlusion tests on regions with real data, the predicted UV was within about 10% of the measurements; Ménard also inspected the outputs by eye and caught artifacts such as atmospheric (airglow) contamination - Process: 'many agents working in Claude Science' over several days of iterations, individual runs lasting hours; Ménard gave high-level instructions and reviewed the results. The post names no Claude model version - Ménard: 'For once, I was able to pursue a project like this without sacrificing time I would otherwise have devoted to research.' Before, 'the only UV map I could show was full of holes' - The map is published as an interactive viewer at menard.pha.jhu.edu/uvmap; no paper, preprint or peer review is mentioned ## What happened Anthropic's research blog published "The missing map of the sky" on October 8, 2026 ([Anthropic](https://www.anthropic.com/research/the-missing-map-of-the-sky)). Brice Ménard, an astrophysicist at Johns Hopkins and an Anthropic researcher, describes a long-wanted project: an ultraviolet map of the whole sky. GALEX, the main UV survey, left about a third of the sky unobserved. Claude agents in Claude Science merged GALEX with other UV missions and trained a model that predicts UV brightness from Gaia's catalog of more than 100 million stars and Planck's dust maps, then used it to fill the gaps. When regions with real data were hidden on purpose, the predictions matched the measurements to within about 10%. The work took several days of iteration. Ménard gave the direction, checked the outputs and caught problems such as atmospheric glow in the data; the agents did the rest. The map is online as an interactive viewer. ## Why it matters It is a small but concrete example of agentic AI doing the data-heavy "infrastructure" work that scientists often postpone for years. It is not a discovery in itself, and it has not been through peer review. It is one of a series of Anthropic posts in autumn 2026 showcasing Claude Science on real research problems. ## What is disputed or not yet verified - Verification: Author's occlusion tests (~10% accuracy) and visual inspection; no paper or peer review yet ## Your AI and this story - GPT-6 Astra (training cutoff April 2026): 161 days after its cutoff - Claude Opus 5.5 (training cutoff June 2026): 100 days after its cutoff - Gemini 3.8 Flash (training cutoff March 2026): 191 days after its cutoff - Grok 4.7 (training cutoff May 2026): 130 days after its cutoff ## Sources 1. [Anthropic: The missing map of the sky (Using Claude Science to produce the first complete map of the sky in UV light)](https://www.anthropic.com/research/the-missing-map-of-the-sky) (anthropic.com, official) 2. [Interactive UV sky map (Brice Ménard, Johns Hopkins)](https://menard.pha.jhu.edu/uvmap/) (menard.pha.jhu.edu, code) 3. [GALEX mission data (MAST archive)](https://archive.stsci.edu/missions-and-data/galex) (archive.stsci.edu, docs) ## Changes - 2026-10-09 (filed): Created (Anthropic research post) ## Related - 2026-09-25: [Claude (Fable 5.1 in Claude Science) computes the nine-loop six-gluon amplitude in planar N=4 super-Yang-Mills, answering a physicist's public challenge](https://postcutoff.com/e/2026-09-25-claude-nine-loop-amplitude-n4-sym/index.md) - 2026-09-17: [Claude speeds up 30+ open-source biology models about 4x and folds 10,000+ token complexes on one GPU node](https://postcutoff.com/e/2026-09-17-claude-biomolecular-modeling-speedups/index.md) - 2026-06-30: [Anthropic launches Claude Science, an AI workbench for researchers](https://postcutoff.com/e/2026-06-30-claude-science/index.md)