Nicolas Longépé, Earth Observation Data Scientist at ESA Φ-lab, presents EVE (Earth Virtual Expert) during Pi School of Artificial Intelligence, an intensive eight-week programme that combines advanced Artificial Intelligence (AI) research with hands-on prototyping. This session, held in Rome on 26 September 2025, featured Retrieval-Augmented Generation and hallucination detection technologies that improve EVE’s accuracy and reliability.
EVE is an AI-based platform that provides information in a question-and-answer format, making it accessible for all levels of expertise. Users can ask questions such as: How has vegetation in southern Europe changed over the past decade? or how do satellites help monitor greenhouse gas emissions?
ESA’s Φ-lab partnered with Pi School – an AI research and innovation company – as well as with two private companies: French-based AI company Mistral and Imperative Space, a multi-disciplinary company that works in innovation, communications and education for the space sector. Together they developed EVE, a large language model (LLM), which summarises, translates and presents huge amounts of data in accessible ways.
Read full story: Introducing ESA’s Earth Virtual Expert