LLMs in dynamical (and general) astronomy
How large language models are transforming astronomical research in celestial mechanics and dynamical astronomy.
Haan, Tijmen de et al. (2025)
AstroSage, an 8B astronomy LLM, matches GPT-4o on AstroMLab-1 through domain-specific training.
AstroSage-Llama-3.1-8B is a freely available language model specialized for astronomy, astrophysics, cosmology, and astronomical instrumentation. It was trained on astronomy arXiv papers, additional astronomical literature, and millions of synthetic question-answer pairs, and achieves 80.9% on the AstroMLab-1 benchmark. Its reported GPT-4o-level performance shows that targeted domain training can allow relatively small open models to rival much larger general-purpose systems, potentially broadening AI support for astronomy education and research.
Domain-specializing an 8B-parameter Llama model using astronomy literature and synthetic question-answer data, then benchmarking it on AstroMLab-1.
Basic familiarity with large language models, scientific benchmarks, and astronomy research literature.
An important conclusion and point from this research is that you don't need a frontier model to achieve acceptable results!
— ES