A paper from several NASA scientists and other researchers explores whether an asteroid with a 4% chance of hitting the moon ...
Megaprojects on MSN
How the Soviets Built the Biggest Nuke in History
The Tsar Bomba, detonated in 1961, remains the most powerful nuclear weapon ever built and tested. This video explores the design, construction, and detonation of the 50-megaton bomb — a weapon so ...
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