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)

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