Which defense system proposed the shoot down missiles in the space?

The defense system that proposed shooting down missiles in space is known as the Strategic Defense Initiative (SDI), often referred to as "Star Wars." Announced by President Ronald Reagan in 1983, SDI aimed to develop a space-based missile defense system to intercept and destroy incoming ballistic missiles before they could reach their targets. The initiative focused on advanced technologies, including satellites and ground-based systems, but faced significant technical and political challenges over the years. Ultimately, while it spurred research and development, SDI was never fully implemented.