Solar-kb — Ask the solar

Solar-kb — Ask the solar system: a RAG chatbot that answers only from ~270 NASA pages, cites its sources and refuses off-topic questions (30/30 on its own test set). A 3D solar system flies to the planet or moon in each answer. NestJS API, Postgres + pgvector, Groq with a Claude fallback, Google sign-in with daily limits, Docker and Caddy HTTPS.