During Reagan’s “Star Wars” days, concept art of space-based anti-missile systems were cranked out on a fairly regular basis. Much of it was, most likely, pure artistic license with little basis in reality. However, some of the weapon artwork was clearly based on actual engineering, such as the Zenith Star and Brilliant Pebbles programs.
One uncertain design is shown in the painting below. It represents a space-based railgun, apparently capable of firing projectiles at high speed in rapid succession. While attributed to the DoD, the vehicle has “Boeing” painted on it. Unlike a lot of the designs, this one at least has a sufficiency of attitude control thrusters. Power for the system is probably nuclear, with the reactor on the far right, surrounded by conical radiators.
