Free Science & Space APIs

Astronomy picture of the day, Mars rovers, asteroids and more. DEMO_KEY works instantly.

Search NASA's entire image and video archive — no key needed.

Launches, rockets, capsules and Starlink data from the community SpaceX API.

Real-time earthquake data from the US Geological Survey in GeoJSON.

Search millions of open-access research preprints in physics, CS, math and more.

Every upcoming rocket launch worldwide, from The Space Devs.

Where is the International Space Station right now? One tiny JSON answers it.

Environmental impact API for tree planting, carbon offsetting and ocean cleanup

API to calculate carbon (C02) emissions estimates for common C02 emitting activities

Calculate the environmental footprint created by a broad range of emission-generating activities

Open energy data from Energinet to society

Data Center Power Index (DCPI): daily scores of where data centers can get grid power across 300+ markets, plus grid, fiber and interconnection-queue data

Swedish electricity spot prices including VAT and energy tax, in 15-minute intervals

Green Power Index for Germany (Grünstromindex/GSI)

Air quality and weather data

Predicted and actual air quality components for The Netherlands (RIVM)

Open air quality data

Open low-cost PM2.5 sensor data

Calculators for home energy cost, lighting, air quality limits and GS1 barcode prefixes, in Swedish

Compare Italian solar installer offers, energy prices (PUN/ARERA) and satellite roof data

Hourly usage energy report for Srp customers

Norwegian electricity prices including VAT and the state subsidy, plus grid tariffs for all 73 grid companies

Open Data from the UK's largest water and wastewater services company

Electricity usage estimations, carbon footprint estimations, and utility data

Multiple astronomy data sources

Random facts and images of space

Satellite orbital TLE catalog, collision forecasts and space environment datasets

Generate LaTeX equations as PNG, SVG, and GIF images

Access the world's Open Access research papers

High Energy Physics info. system

Check if a number is even

ISRO Space Crafts Information

Integrated Taxonomic Information System

Curated experimental data for materials science

Moon phases, illumination, moon signs, full/new moon dates (1900–2100), moonrise/moonset by coordinates

NASA Astrophysics Data System

Symbolic and Arithmetic Math Calculator

Repository and archive for study designs, research materials, data, manuscripts, etc

Catalog of 16,000+ satellites with the source cited for every field: orbital elements, operators, NORAD/COSPAR IDs

Real Time Air Quality Monitoring

Find satellite passes

With this API you can add each of the times introduced in the array sent

Satellite information

Water quality and level info for rivers and lakes