Final answer:
Reagan's proposed space-based missile defense system was called the Strategic Defense Initiative (SDI), also known as Star Wars, involving a defensive network of satellites to intercept enemy nuclear missiles.
Explanation:
Strategic Defense Initiative (SDI), also known as Star Wars, was the name of Reagan's proposed space-based missile defense system. It was a defensive network of satellites intended to detect and destroy enemy nuclear missiles using lasers and other countermeasures. However, critics pointed out significant technological challenges and feasibility concerns.
Learn more about Reagan's Strategic Defense Initiative (SDI) here:
https://brainly.com/question/3439170
