EXTENSIONS

Near-Earth asteroid close-approach data from NASA's NeoWs (Near Earth Object Web Service) API — "what's flying by Earth this week."

Real-time satellite tracking against the N2YO REST API. Two methods: `above` lists every tracked satellite currently within a search radius over an observer's lat/lng ("what's flying overhead right now"), and `passes` predicts the next visible passes of one specific satellite (by NORAD catalog ID) over that location.

Tracks the International Space Station's current position (Open Notify's free iss-now.json API) and reports its great-circle distance from a configured ground location — a fun proximity indicator, not a real pass-prediction tool.