It was thirty years ago this week that President Ronald Reagan gave a historic speech proposing, for the first time, a space-based anti-ballistic missile system for the United States. The plan, once developed, would utilize ground and space-based weaponry to blast apart incoming nuclear missiles. The basic premise was an array of missile-launching satellites around the Earth. A far more radical design called for the deployment of platforms in orbit: either carrying anti-missile lasers or particle beams, or as part of an adaptive-optics system which would focus a surface-generated laser onto a moving target anywhere around the world (see illustration).
The official name for the concept was Strategic Defense Initiative, or SDI. But for reasons apparent to everyone it was quickly labeled “Star Wars” by the mainstream press and the name stuck.
SDI gained notoriety overnight, as much from many people in the United States as from the government ...





