Sources:
https://wheretheiss.at
Documentation: https://wheretheiss.at/w/developer

Crew List:
https://github.com/corquaid/international-space-station-APIs

Astronaut Bios:
https://en.wikipedia.org/api/rest_v1/#/Page%20content/get_page_summary__title

Bonus context links worth adding to the description:                                                
 - NORAD satellite catalog entry for ISS: https://www.space-track.org (requires free account to browse)                                                                                             
 - NASA ISS overview: https://www.nasa.gov/international-space-station/                           
 - USSPACECOM public TLE data (the raw orbital data that feeds trackers like wheretheiss.at):        
 https://celestrak.org/SOCRATES/query.php

The International Space Station orbits Earth at roughly 28,000 kilometers per hour, completing a full lap every 90 minutes. At any given moment it is somewhere over your head, carrying a rotating crew of astronauts from space agencies around the world including NASA, ESA, Roscosmos, JAXA, and CSA.

This tracker pulls the station's real-time coordinates every five seconds from Where The ISS At, a public tracking service that reads orbital telemetry data originally published by the United States Space Command under NORAD catalog number 25544. That number is the ISS's official identifier in the satellite tracking registry, and it is what allows any system in the world to follow its exact position at any time.

The map shows the ground track the station has traveled over the last five minutes, a dashed line that reveals just how fast it moves across the planet's surface. The footprint circle represents the area of Earth the station can currently see below it, roughly the size of a continent. Clicking any crew member's name pulls a short biography from the Wikipedia public API, connecting the data on screen to the people living and working 400 kilometers above us.