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AI-powered NASA mission search

How It Works

This app runs entirely locally, so no data is sent to external AI services. It uses Retrieval-Augmented Generation (RAG) to answer questions from real NASA content.

Web Scraping 600+ mission pages from NASA's A-to-Z index

Chunk & Embed Text split into ~4,100 chunks, embedded with nomic-embed-text

Vector Store ChromaDB with cosine similarity search

Your Question Hybrid search (vector + keyword), then a cross-encoder re-ranks for relevance

LLM Response Generated locally by gemma4:26b via Ollama

Performance note: This app runs gemma4:26b, a 26-billion parameter model, plus a bge-reranker-v2-m3 cross-encoder, locally on an NVIDIA RTX 4090 GPU via Ollama. Retrieval is two-stage: hybrid search gathers candidates, then the cross-encoder re-ranks them for relevance. Everything runs locally on the GPU, so your questions stay fully private and never leave this server.

Explore NASA Missions

Ask questions about Apollo, Voyager, Space Shuttle, Mars rovers, and more. Answers are generated from official NASA mission pages.

Responses are AI-generated from NASA mission pages and may contain inaccuracies.