AION-1: Omnimodal Foundation Model for Astronomical Sciences - Parker, Liam; Lanusse, Francois; Shen, Jeff; Liu, Ollie; Hehir, Tom; Sarra, Leopoldo; Meyer, Lucas; Bowles, Micah; Wagner-Carena, Sebastian; Qu, Helen; Golkar, Siavash; Bietti, Alberto; et al. (Advances in Neural Information Processing Systems, 2025)