A notional illustration of the Golden Dome system intercepting a missile. (Image credit: Lockheed Martin) President Trump's Golden Dome may end up being quite a bit more expensive than originally thought. A new report by the nonpartisan Congressional Budget Office (CBO) estimates it will cost about $1.2 trillion to deploy the Golden Dome missile defense system and operate it for 20 years. The Golden Dome for America (GDA) is an envisioned shield that will protect the United States against ballistic and hypersonic missiles and other aerial threats. It will feature advanced missile-tracking satellites as well as space-based interceptors — satellites capable of shooting down missiles headed toward the U.S., which the Space Force wants to be ready by 2028 . Those broad strokes are basically all we know, however; details of the architecture have not been released.…