NetBSD, a highly portable, open-source Unix-like operating system, has earned a prominent place in satellite technology. Its extensive use in spacecraft, including the AeroCube series, BRICSat-P, ITSAT, and NASA's SAMPEX satellite, highlights the OS's exceptional capabilities in meeting the rigorous demands of space missions. This text explores the reasons behind its adoption and how it powers these satellites.NetBSD is distinguished by several features that make it suitable for satellite missio...