Open Notify

API

Free API for ISS astronaut data and real-time location

Overview

Open Notify provides RESTful endpoints for International Space Station (ISS) data, including current astronauts aboard the ISS, real-time geographic location of the ISS, and upcoming ISS passes over a specified latitude/longitude. Responses are in JSON format with no authentication required. Ideal for educational projects, space-themed apps, or hobbyist tools to integrate live ISS data seamlessly into their work.

Example Integration (JavaScript)

script.js JS


fetch('http://open-notify.org/Open-Notify-API/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON responses
No authentication required
ISS astronaut list
Real-time ISS location
ISS pass prediction

Frequently Asked Questions

? Is Open Notify free to use?

Yes, Open Notify is free for all personal, educational, and non-commercial uses with no subscription or payment required.

? Does it require an API Key?

No, Open Notify does not need any API key or authentication to access its endpoints—you can call them directly.

? What is the response format?

All endpoints return data in JSON format, which is widely supported and easy to parse in most programming languages.

Top Alternatives

NASA API (Space Station Data) Search Google

Tool Info

Pricing Free

Category Science & Math

Platform Public API

Pros

⊕ Easy to integrate
⊕ Completely free
⊕ Simple JSON output
⊕ Educational resource

Cons

⊖ Rate-limited (unofficial but implied)
⊖ No service level agreement (SLA)
⊖ Limited to ISS-related data
⊖ No historical data access