Nautilus is an Italian space company specializing in flight dynamics for near-Earth and deep-space missions. The company develops advanced autonomous GNC subsystems, high-performance flight dynamics software, and operational flight dynamics services to support mission analysis, navigation, collision avoidance, and autonomous operations across all mission phases. Nautilus also provides ground testing equipment for CubeSat ADCS validation, enabling closed-loop testing and accelerating the development of next-generation attitude control systems. By combining advanced algorithms, operational expertise, and scalable software platforms, Nautilus supports Earth-orbit, lunar, and deep-space missions, contributing to the transition toward fully autonomous space operations.