astronomy-mcp-server
Provides astronomical data including ISS tracking, moon phases, NASA APOD, near-Earth objects, exoplanets, space weather, and upcoming celestial events without requiring an API key.
README
astronomy-mcp-server
MCP Server for astronomy data — ISS tracking, moon phases, NASA APOD, near-Earth objects, exoplanets, space weather, and upcoming events. No API key required.
Tools (8)
| Tool | Description |
|---|---|
tool_get_moon_phase |
Current moon phase, illumination %, next full/new moon |
tool_track_iss |
ISS real-time position, altitude, speed, crew aboard |
tool_get_astronomy_picture_of_day |
NASA APOD — daily astronomy image with explanation |
tool_get_near_earth_objects |
Upcoming asteroid/comet approaches (NASA NeoWs) |
tool_get_sunrise_sunset |
Sunrise, sunset, solar noon, twilight for any location |
tool_get_space_weather |
Kp-index, solar wind, aurora alerts (NOAA SWPC) |
tool_search_exoplanets |
Search 5800+ confirmed exoplanets (NASA Exoplanet Archive) |
tool_get_upcoming_events |
Meteor showers, eclipses, solstices, moon phases |
Data Sources
- NASA APOD — api.nasa.gov (DEMO_KEY, 30 req/hour)
- Open Notify — api.open-notify.org (ISS position + astronauts, free)
- NASA NeoWs — Near Earth Object Web Service (DEMO_KEY)
- NASA Exoplanet Archive — exoplanetarchive.ipac.caltech.edu (free TAP API)
- Sunrise-Sunset.org — Free sunrise/sunset API
- NOAA SWPC — Space Weather Prediction Center (free)
- Moon phases — Calculated locally (no API needed)
Installation
pip install astronomy-mcp-server
Claude Desktop Configuration
{
"mcpServers": {
"astronomy": {
"command": "astronomy-mcp-server"
}
}
}
Example Usage
"What is today's moon phase?"
→ tool_get_moon_phase()
"Where is the ISS right now?"
→ tool_track_iss()
"Show me today's NASA astronomy picture"
→ tool_get_astronomy_picture_of_day()
"Are there any asteroids approaching Earth this week?"
→ tool_get_near_earth_objects()
"When does the sun rise in Berlin tomorrow?"
→ tool_get_sunrise_sunset(latitude=52.52, longitude=13.405)
"What is the current space weather / Kp-index?"
→ tool_get_space_weather()
"Find exoplanets similar in size to Earth"
→ tool_search_exoplanets(min_radius=0.8, max_radius=1.5)
"What astronomical events are coming up in May 2026?"
→ tool_get_upcoming_events(year=2026, month=5)
License
MIT — AiAgentKarl
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