In 1962, the US detonated a 1.4 megaton nuclear bomb 250 miles above the Pacific in a test called Starfish Prime, and the electromagnetic pulse knocked out streetlights, burglar alarms, and a telephone company microwave link in Honolulu nearly 900 miles away, on an island most engineers had assumed was safely out of range Saving Tips May 28, 2026 On July 9, 1962, a Thor rocket carrying a W49 thermonuclear warhead detonated roughly 250 miles above Johnston Atoll in…
