Two of Jupiter's satellites, Europa and Ganymede, pull Io into an elliptical orbit around Jupiter. Differences in the strength of Jupiter's gravitational pull as the distance between the planet and Io varies causes slight changes in Io's shape. Scientists believe that Io heats up internally when it changes shape.
The Atomic Age, also known as the Atomic Era, is the period of history following the detonation of the first nuclear (atomic) bomb, Trinity, on July 16, 1945 during World War II.
History of WW2. Now I am become Death, the destroyer of worlds. Oppenheimer quoting the Bhagavad Gita, after the successful atomic bomb test at Los Alamos. At approximately 8.15am on 6 August 1945 a US B-29 bomber dropped an atomic bomb on the Japanese city of Hiroshima, instantly killing around 80,000 people.