Soviéticos explodem primeira bomba atômica

Imagem: U.S. Air Force 1352nd Photographic Group, Lookout Mountain Station (Former Defenses Nuclear Agency (DNA)) [Public domain], via Wikimedia Commons
Imagem: U.S. Air Force 1352nd Photographic Group, Lookout Mountain Station (Former Defenses Nuclear Agency (DNA)) [Public domain], via Wikimedia Commons