: These are formed specifically when thick lava hardens directly over a volcanic vent [10].
Initiated in January 2025 by the second Trump administration, the Golden Dome for America (originally called the "Iron Dome for America") is an integrated air and missile defense system [6].
: It is a hollow half of a sphere [10]. Traditional masonry domes require heavy supporting walls or pendentives—inverted triangular masonry—to transition from a square base to a circular dome [12, 13]. : These are formed specifically when thick lava
: These can form as "laccoliths," where hardened magma creates a triangle or dome shape between sedimentary rock layers [10].
: The system is designed to be a "system of systems," incorporating ground-based interceptors, ship-borne defenses, and space-based interceptors [18, 19]. Traditional masonry domes require heavy supporting walls or
: President Trump has stated the goal for the system to be "fully operational" within his term, with an estimated initial cost of $175 billion [2, 25]. However, critics and analysts estimate the long-term cost could reach $844 billion to $1.1 trillion [16].
: In April 2026, the U.S. Space Force awarded contracts to 12 companies —including SpaceX, Lockheed Martin, and Northrop Grumman—to begin work on space-based interceptors [18, 20]. 3. Geology : President Trump has stated the goal for
In architecture, a dome is a hemispherical structure evolved from the arch, typically forming a ceiling or roof [12].