Why is the American SDI program called the "Star Wars" program?

1On March 23rd, 983, US President Ronald Reagan delivered a televised speech entitled "American National Security" to the whole country during the prime time of national TV programs. Its central idea is to develop an anti-ballistic missile weapon system for homeland defense, so as to make the enemy's nuclear weapons "useless and outdated" and protect the homeland security of the United States and its allies. This is the "Strategic Defense Initiative" (SDI) of the US government. Because most of the battlefields described by SDI are in space and the atmosphere, all kinds of advanced weapon systems, intelligent systems and vehicles will be used, which is very similar to the scenes in the movie Star Wars, so it is also called the "Star Wars" plan.