The Moment of History on Instagram: "In 2020, Russia declassified and released full footage of the 1961 Tsar Bomba test — the most powerful nuclear explosion ever created by humankind. For decades, these images remained hidden in secret archives. Now we can finally see how the massive hydrogen bomb was prepared, transported, dropped from a bomber, and detonated high above Novaya Zemlya. The resulting fireball reached nearly 10 km in diameter, and the shockwave circled the Earth several times. Th

Top History on Instagram: "The Cannikin nuclear test-conducted by the United States on November 6, 1971, on Amchitka Island in Alaska's Aleutian chain-was the largest underground nuclear detonation ever carried out by the U.S. The bomb had a yield of roughly 5 megatons of TNT and was detonated at the bottom of a 5,875-foot deep shaft tunneled beneath the island's volcanic rock. The explosion hollowed orangemedom. Below I out a huge underground cavity and created seismic shockwaves equivalent toe