How the USA Missile Defense System Actually Works w/ Neil Degrasse Tyson

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You might not know this—but the U.S. already has a missile defense system in place. ????️????️

From Greenland to the West Coast, advanced technology watches the skies for intercontinental ballistic missiles (ICBMs). Detected by satellite, these missiles can be intercepted mid-flight, long before reaching their targets.

But what exactly is a ballistic missile? Once launched, it exits the atmosphere and follows a suborbital arc guided only by gravity—that’s the true meaning of “ballistic.”

In this video, we break down the science, strategy, and physics behind this powerful yet misunderstood system of defense.