Best Alternatives to Kshana PNT Resilience simulator

Open Ephemeris

Runtime: npx

Sub-arcsecond ephemeris and astrology on NASA JPL DE440: natal, transits, eclipses, Human Design.

Orbit

Runtime: Remote (SSE)

Task management for people and AI agents, with scoped OAuth access to issues, projects, and docs.

Nasa Images

Runtime: npx

A project to search NASA's image library using an MCP server and display images in an interactive UI.

Landbenchmark MCP

Runtime: npx

Satellite land due-diligence: a green/caution/walk-away verdict with cited signals for any parcel.

Sidereon

Runtime not confirmed

GNSS positioning and astrodynamics: orbit propagation, passes, GNSS solves, and RINEX QC

Nasa Power

Runtime: Remote (SSE)

NASA POWER MCP — Prediction of Worldwide Energy Resources

NASA JPL Horizons — solar-system body ephemerides

Query public astronomy catalogs through metadata-first TAP and ADQL tools.

Exoplanet Archive

Runtime: Remote (SSE)

NASA Exoplanet Archive — ~5600 confirmed exoplanets + candidates

Aviation Weather MCP Server

Runtime: bunx

Fetch METARs, TAFs, PIREPs, and SIGMETs/AIRMETs from the NWS Aviation Weather Center.

MAST (Mikulski Archive for Space Telescopes) — Hubble/JWST/Kepler/TESS

Science

Runtime: Remote (SSE)

MCP server for science data — NASA APOD, ISS location, and earthquake monitoring