#science

Atomare Isotopen-Referenzdaten als API, basierend auf den NIST Atomic Weights and Isotopic Compositions. Für jedes bekannte Nuklid: sein Element (Ordnungszahl Z und Symbol), Massenzahl, relative Atommasse, natürliche Isotopenzusammensetzung (Häufigkeit) und die Standard-Atommasse des Elements. Suchen Sie ein Isotop nach Bezeichnung (C-12, U-238) oder nach Symbol + Masse, listen Sie alle Isotope eines Elements auf, ordnen Sie Isotope nach Masse oder natürlicher Häufigkeit oder suchen Sie. Eine präzise physikalische und chemische Referenz für Wissenschaft, Bildung, Labor- und Ingenieuranwendungen. Unterscheidet sich von elementaren Daten.

api.oanor.com/isotopes-api

NASA's catalogue of 45,000+ meteorites recovered on Earth as an API. For each meteorite: its name, NASA id, classification (recclass, e.g. L5, Iron), mass in grams, whether it was seen to fall or simply found, the year, and the latitude/longitude where it was recovered. Look one up by name or id, find the meteorites NEAR any coordinate (great-circle distance), rank by mass or year, list a classification or year, or search. Great for space, education, mapping and museum apps. Distinct from asteroids and close-approach data — these are rocks already on the ground.

api.oanor.com/meteorites-api

Die 88 modernen IAU-Konstellationen als API – die Referenz, die eine Astronomie-App, ein Planetarium oder ein Bildungstool benötigt. Für jede Konstellation: ihre offizielle IAU-Abkürzung, der englische Name, der lateinische Genitiv, der bei der Benennung von Sternen verwendet wird (z. B. "Alpha Andromedae"), eine Größenrangfolge, der ungefähre Mittelpunkt in äquatorialen Koordinaten (Rektaszension / Deklination) und der Konstellationsname in etwa 25 Sprachen. Schlagen Sie eine nach Abkürzung oder Name nach, durchsuchen Sie alle Sprachen, finden Sie heraus, welcher Konstellation eine Himmelsposition am nächsten liegt, oder listen Sie alle auf. Unterscheidet sich von stars-api (einzelne Sterne) – dies ist die Referenz für die Konstellationen selbst. Wird aus dem Speicher bedient – immer schnell.

api.oanor.com/constellations-api

Die IAU Minor Planet Center Liste der Observatoriumscodes als API – jede Einrichtung, die das MPC zur Identifizierung eines Teleskops verwendet, wenn es astrometrische Beobachtungen von Asteroiden und Kometen veröffentlicht. Für jeden der über 2.700 Codes: der 3-stellige Code, der Name des Observatoriums, seine östliche Länge und die Parallaxenkonstanten (rho·cos φ', rho·sin φ'). Aus diesen Konstanten leitet die API die geozentrische Breite jedes Standorts und eine Länge von -180..180 ab, sodass Sie die nächstgelegenen Observatorien zu jedem Punkt auf der Erde mit einer Großkreis-Suche (Haversine) finden können. Suchen Sie einen nach Code, suchen Sie nach Namen, listen Sie alle auf oder finden Sie die nächstgelegenen Standorte zu einem Breiten-/Längengrad. Unterscheidet sich von telescope-api (Optik-Mathematik) – dies ist das Verzeichnis der tatsächlichen Beobachtungsstandorte und ihrer Positionen. Aus dem Speicher bereitgestellt – immer schnell.

api.oanor.com/observatories-api

iNaturalist als API – die weltweit größte Citizen-Science-Naturplattform, zurückgegeben als sauberes JSON, kein Key. Durchsuchen Sie Hunderte Millionen Wildtierbeobachtungen nach Artname, Ort oder Qualitätsstufe und erhalten Sie jede mit ihren Fotos, identifizierten Arten, Standort, Datum und Beobachter. Öffnen Sie eine einzelne Beobachtung, durchsuchen Sie Taxa (Arten) und öffnen Sie ein Taxon für seinen gebräuchlichen Namen, Rang, vollständige Abstammung, Fotos, Wikipedia-Link, Schutzstatus und Beobachtungsanzahl. Entdecken Sie die am häufigsten beobachteten Arten an einem beliebigen Ort (nach Orts-ID oder Breitengrad/Längengrad), vervollständigen Sie Orte automatisch und listen Sie die Top-Beobachter auf. Live-Daten direkt von iNaturalist. Abgrenzung zu taxonomischen Registern: Dies sind echte Community-Beobachtungen mit Fotos und Standorten – ideal für Natur-, Vogel- und Artbestimmungs-Apps, Biodiversitäts-Dashboards und Bildung. 7 Datenendpunkte. Authentifiziert mit einem x-oanor-key; faire Nutzungsraten pro Plan.

api.oanor.com/inaturalist-api

Classical-mechanics maths as an API. The kinematics endpoint is a full SUVAT solver: give any three of initial velocity (u), final velocity (v), acceleration (a), time (t) and displacement (s) and it computes the rest using the standard constant-acceleration equations. The projectile endpoint takes a launch speed and angle (and an optional launch height and gravity) and returns the horizontal and vertical velocity components, the time to the peak, the maximum height, the total flight time, the range and the impact speed. The free-fall endpoint computes a vacuum fall from a height or for a time, with an optional initial velocity, returning the fall time, distance and impact velocity. Gravity defaults to standard 9.80665 m/s² but can be set for the Moon, Mars or any body. Everything is computed locally and deterministically in SI units, so it is instant and private. Ideal for physics education and homework, engineering and simulation, game and ballistics development, and motion tools. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This is motion physics; for planetary data use a planets API and for unit conversion use a unit API.

api.oanor.com/physics-api

Protein-protein interaction networks as an API — powered by STRING, the database of known and predicted protein associations that combines evidence from laboratory experiments, curated pathway databases, gene co-expression, genomic context and automated text mining into a single confidence score, across thousands of organisms. Get a protein's top interaction partners (each with the combined confidence score and the seven evidence-channel subscores), the interaction network among any set of proteins as scored edges, and functional enrichment for a gene set — the over-represented GO terms, KEGG pathways, Pfam domains and more, each with its p-value, FDR and member genes. Pass gene symbols (TP53) or STRING/Ensembl ids, for human (default) or any species by NCBI taxon id. It is a cornerstone of systems biology — ideal for network analysis, functional genomics, pathway and bioinformatics tools. A protein-interaction-network resource — distinct from biological pathways (Reactome), curated protein complexes (Complex Portal) and Gene Ontology annotations (QuickGO). Open data from STRING (CC BY 4.0).

api.oanor.com/stringdb-api

Polygenic (risk) scores as an API — powered by the NHGRI-EBI PGS Catalog, the open database of published polygenic scores: weighted combinations of genetic variants used to estimate a person's genetic predisposition to a trait or disease. Search traits by name to find their ontology ids, list every polygenic score developed for a trait, and read a score's full metadata — the reported and mapped (EFO/MONDO) traits, the number of variants in the score, the development method, genome build, the ancestry distribution of the samples it was built and evaluated on, the publication behind it (title, journal, date, PubMed id), the release date, license and a direct link to the scoring file. From breast cancer and coronary artery disease to type 2 diabetes and BMI, it is ideal for statistical genetics, genomics, risk-prediction research and bioinformatics tools. A polygenic-score / genetic-risk-prediction resource — distinct from single-variant association studies (GWAS Catalog), population allele frequencies (gnomAD) and clinical variant interpretation (ClinVar). Open data from the NHGRI-EBI PGS Catalog (CC BY 4.0).

api.oanor.com/pgs-api

Gene function as an API — powered by EMBL-EBI's QuickGO and the Gene Ontology (GO), the standard vocabulary that describes what gene products do across three aspects: molecular function, biological process and cellular component. Given a gene or protein (a UniProt accession), list every GO annotation made for it — the GO term, its aspect, the qualifier, the evidence code, the supporting reference (e.g. a PubMed id), the organism and who assigned it — optionally filtered by aspect or organism. Look up any GO term to get its definition, aspect, synonyms and number of child terms; and search the ontology by name to find the right GO terms. GO term names are resolved automatically on annotations. From TP53 to any protein in any species, it is the backbone of functional genomics — ideal for enrichment analysis, annotation pipelines, bioinformatics and research tools. A gene-function annotation resource (which genes have which functions, with evidence) — distinct from generic ontology-term lookup. Open data from EMBL-EBI QuickGO and the GO Consortium (CC BY 4.0).

api.oanor.com/quickgo-api

Scholarly citations as open data — powered by OpenCitations (COCI), the open citation index. Unlike a metadata lookup, OpenCitations treats every citation as a first-class object: given a DOI you can list the papers that cite it (incoming citations) and the papers it references (outgoing), each annotated with its OpenCitations Identifier (OCI), the date the citation was created, the timespan between the two works, and whether it is a journal- or author-self-citation. Plus quick citation and reference counts for any DOI. It is built for citation-network and bibliometric work — research-impact analysis, self-citation detection, citation-timespan studies and science mapping — and is distinct from scholarly-metadata services (Crossref, OpenAlex). From a single paper to a whole reference graph, ideal for bibliometrics, research-analytics and reference-management tools. Open data from OpenCitations (CC0).

api.oanor.com/opencitations-api

The tree of life as an API — powered by the Open Tree of Life, the project that unifies published phylogenetic trees and taxonomies into a single synthetic tree spanning about 2.3 million named species. Resolve any scientific name to its canonical taxon and Open Tree Taxonomy (OTT) id (cross-referenced to NCBI, GBIF and other sources); read a taxon's classification and full lineage of ancestors up the tree (genus, family, order, class, …); and compute the most recent common ancestor (MRCA) of any set of species — the heart of comparative biology and "how related are these organisms?" questions. From Homo sapiens and the great apes to any branch of plants, fungi, animals and microbes, it is ideal for biology, evolution, ecology, education and bioinformatics tools. An evolutionary-tree / phylogenetics reference — distinct from species-occurrence data (biodiversity / GBIF), marine taxonomy (WoRMS) and sequence databases. Open data from the Open Tree of Life project (CC0).

api.oanor.com/opentol-api

Human genetic trait associations as an API — powered by the NHGRI-EBI GWAS Catalog, the curated reference of published genome-wide association studies. It answers the core question of statistical genetics: which genetic variants (SNPs) are associated with which traits and diseases, and how strongly. Look up a SNP to get its functional class, genomic location and mapped genes; pull every trait association reported for it — the trait, p-value, effect size (odds ratio or beta), risk allele and frequency, and author-reported genes; and read the study behind the evidence — trait, sample sizes, ancestries, genotyping technology and the publication (PubMed id, authors, journal, date). From type 2 diabetes and Crohn disease to systemic lupus erythematosus and hundreds of thousands of associations, it is ideal for genomics, bioinformatics, statistical-genetics and biomedical research tools. A published genetic-association evidence base — distinct from population allele frequencies (gnomAD), clinical variant interpretation (ClinVar) and genome annotation (Ensembl). Open data from the NHGRI-EBI GWAS Catalog (EMBL-EBI).

api.oanor.com/gwas-api

Crystal structures as an API — powered by the Crystallography Open Database (COD), the open, public-domain collection of over 500,000 crystal structures of organic, inorganic, metal-organic compounds and minerals. Search the database by chemical formula (any standard casing — TiO2, Al2O3, H2O — is normalised automatically) or by free text over mineral names, titles and comments, then look up any structure to get its full crystallographic data: chemical and cell formula, space group (Hermann-Mauguin and Hall), the complete unit cell (a, b, c, alpha, beta, gamma and volume), the source publication (title, authors, journal, year, DOI) and a link to the CIF file. From quartz, calcite and diamond to anatase, corundum and diopside, it is ideal for materials science, solid-state chemistry, mineralogy, crystallography teaching and research tooling. This is a crystal-structure & materials database — distinct from molecule-property (chemistry / PubChem) and protein-structure (PDB) databases. Open data from the Crystallography Open Database (CC0 / public domain).

api.oanor.com/cod-api

ORCID como API — el registro global de identidad de investigadores, impulsado por la API pública de ORCID. Un ORCID iD (por ejemplo 0000-0002-1825-0097) identifica de manera única y persistente a un investigador en revistas, financiadores, universidades y todo el registro académico. Busque más de 15 millones de investigadores por nombre, institución, palabra clave o identificador externo utilizando la rica sintaxis de campos de Solr, obteniendo el ORCID iD, nombre, otros nombres e instituciones afiliadas de cada coincidencia; lea el perfil público de un investigador, incluidos sus nombres publicados y de crédito, biografía, palabras clave de investigación, país, sitios web personales y de laboratorio, e identificadores externos como Scopus Author ID o ResearcherID; enumere los trabajos que han reclamado en su registro con el título, tipo, año de publicación, revista y DOI de cada trabajo; y rastree sus afiliaciones laborales y educativas con la organización, rol, departamento y fechas. Ideal para sistemas de información de investigación, desambiguación de autores, informes institucionales, herramientas académicas y búsqueda académica. Los ORCID iD provienen de resultados de búsqueda o son proporcionados directamente por el investigador. Los datos son la parte pública de los registros de ORCID (CC0). Para los trabajos académicos y el gráfico de citas, consulte la API de OpenAlex; para DOIs y metadatos de revistas, la API de Crossref.

api.oanor.com/orcid-api

Search the entire arXiv scholarly-preprint corpus as an API — millions of papers across physics, mathematics, computer science, quantitative biology and finance, statistics, electrical engineering and economics. Query by free text, title, author and/or subject category (e.g. q=transformer&category=cs.AI), with paging and sort by relevance, submission or last-update date, or pull full metadata for any paper by its arXiv id (e.g. 1706.03762 → "Attention Is All You Need"). Every result carries the title, full author list, abstract, primary and cross-list categories, DOI, journal reference, comments and a direct PDF link. Ideal for literature-review and research tools, citation managers, ML/AI paper trackers, academic search and discovery, and science newsletters.

api.oanor.com/arxiv-api

Chemical compound data as an API, powered by NIH PubChem (>100 million compounds). Look up any compound by common name, PubChem CID or SMILES and get its molecular formula, molecular and exact mass, IUPAC name, canonical SMILES, InChI and InChIKey, plus physicochemical properties (XLogP, TPSA, formal charge, hydrogen-bond donor/acceptor counts, rotatable bonds, heavy-atom count). List a compound's synonyms and trade/registry names, or resolve a name to PubChem CIDs. Ideal for cheminformatics, lab software, education, drug-discovery tooling and scientific data pipelines.

api.oanor.com/chemistry-api

Las constantes físicas fundamentales NIST CODATA 2022 como una API — 355 cantidades utilizadas en toda la física e ingeniería. Busque cualquier constante por nombre o slug (por ejemplo, velocidad de la luz en el vacío → 299792458 m/s, exacto; constante de Planck, carga elemental, constante de Avogadro, constante de Boltzmann, constante de gravitación newtoniana), busque por palabra clave, o enumérelas todas. Cada registro lleva el valor recomendado, la incertidumbre estándar, la unidad SI y si el valor es exacto (por definición desde la redefinición del SI de 2019). Ideal para calculadoras científicas, software de física/ingeniería, educación y herramientas de laboratorio.

api.oanor.com/constants-api

Explore 6,200+ confirmed planets orbiting other stars, from the NASA Exoplanet Archive. For each exoplanet get its host star, discovery method, year and facility, orbital period, radius and mass (relative to Earth), distance in light-years and equilibrium temperature. Look one up by name, search and filter by discovery method or year, or list every planet in a host system (e.g. TRAPPIST-1). Great for astronomy, education and space apps.

api.oanor.com/exoplanets-api

A catalogue of 9,000+ stars — every named star plus all naked-eye stars to magnitude 6.5 — from the HYG database. Look up a star by name, search and filter by constellation and brightness, list the brightest stars (overall or per constellation), and browse all 88 constellations. Each star includes its constellation, apparent and absolute magnitude, spectral class, distance in light-years and coordinates. Great for astronomy, education and stargazing apps.

api.oanor.com/stars-api

Explore 4,100+ dinosaur genera from the Paleobiology Database. For each dinosaur get the geologic period it lived in (Triassic, Jurassic or Cretaceous), its age range in millions of years, the stratigraphic intervals and who first named it. Look one up by name, search the catalogue, filter by period, or get a random dinosaur — perfect for education apps, games, quizzes and museum tooling.

api.oanor.com/dinosaurs-api

The complete periodic table as an API — all 119 chemical elements with their atomic and physical properties: atomic number and mass, category, phase, melting and boiling point, density, electron configuration, electronegativity, ionization energies and a short summary. Look up an element by symbol, atomic number or name, search and filter by category/phase/block, or fetch the whole table. Ideal for chemistry tools, education apps and science projects.

api.oanor.com/elements-api

Classify any location's climate with the Köppen-Geiger system — the standard used across geography, ecology, agriculture and architecture. Provide a location's twelve monthly mean temperatures and precipitation totals and get back its climate code (for example Cfb or BWh), the climate group and full name, a description, and a block of derived statistics (annual mean temperature, annual precipitation, warmest and coldest month, driest month, months above 10 °C, summer-precipitation share and the aridity threshold). The hemisphere is auto-detected from the temperature curve, or you can set it explicitly. A reference endpoint returns all thirty Köppen-Geiger codes with names, groups, descriptions and example cities. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side computation (no third-party upstream), so responses are instant and always available. Ideal for EdTech and geography tools, AgTech and crop-suitability apps, architecture and GIS pipelines.

api.oanor.com/climate-api

Fysiske og orbitale data for solsystemet og videre: hver planet, dvergplanet, større måne og solen med NASA-faktaarkverdier (masse, radius, overflategravitasjon, tetthet, unnslipningshastighet, gjennomsnittstemperatur, omløps- og rotasjonsperiode, semi-hovedakse, antall måner og ringer), pluss et søkbart katalog over mer enn 6 000 bekreftede eksoplaneter fra NASA Exoplanet Archive (radius, masse, omløpsperiode, likevektstemperatur, avstand i lysår, vertsstjerne, oppdagelsesår og metode). Filtrer eksoplaneter etter vertsstjerne, oppdagelsesmetode, år, størrelse eller avstand, sammenlign solsystemlegemer side om side, og slå opp et hvilket som helst enkelt legeme eller eksoplanet ved navn. Hvert endepunkt godtar input via spørrestrengen eller forespørselskroppen og returnerer slank JSON. Ren server-side data (ingen tredjepart oppstrøms), så svar er øyeblikkelige og alltid tilgjengelige. Ideell for utdanning, EdTech, astronomiapper, datavisualisering og vitenskapsverktøy.

api.oanor.com/planets-api

A fast, fully-local astronomy and ephemeris engine: compute the equatorial (right-ascension/declination) and horizontal (azimuth/altitude) positions of the Sun, Moon and all planets for any observer and moment, get precise rise, set and transit (culmination) times for any body, read detailed lunar state (phase angle, named phase, illuminated fraction, apparent magnitude, geocentric distance, age since the last new moon and the dates of the next new/first-quarter/full/last-quarter moons), and list the exact equinoxes and solstices of any year. Every endpoint accepts input via the query string or the request body. Pure server-side computation (no third-party upstream), so responses are instant and always available. Ideal for weather and tide apps, astrophotography planners, calendars, solar/energy tools, Islamic and lunar calendars, and education.

api.oanor.com/astronomy-api

Nobel Ödüllerini yıl ve kategoriye göre keşfedin — fizik, kimya, tıp, edebiyat, barış ve ekonomi — ödül sahipleri ve resmi alıntılarıyla birlikte; ayrıca ödül sahibi profillerini isim veya kimlik numarasına göre doğum detayları ve kazandıkları her ödülle birlikte arayın. Eğitim, trivia, araştırma ve tarih uygulamaları için harika.

api.oanor.com/nobel-api

Search the NASA Image and Video Library — Apollo, Hubble, Mars rovers, the ISS and decades of mission imagery — and fetch the asset file URLs in every resolution for any item. Great for space, education, media, wallpaper and museum apps. All NASA media is public domain.

api.oanor.com/nasa-api

最新、次回および最近のSpaceX打ち上げ情報。ミッション詳細、成功ステータス、ミッションパッチ、ウェブキャスト、記事、IDによる単一打ち上げ検索、および仕様、成功率、画像を含む全ロケット艦隊を提供。宇宙ダッシュボード、トラッカー、教育、趣味のプロジェクトに最適。

api.oanor.com/spacex-api