1942
year 2026
The first nuclear reactor was in former Soviet Union that operated in year 1954 at obninisk.
Leo Szilard described the process of a nuclear chain reaction in 1933. Before then, the idea that elements could self-sustain a nuclear fission process after a single initial fission was unknown. Szilard did experiments to verify this worked, and filed a patent for the description of a nuclear reactor in 1934. He immediately grasped the idea that a weapon could be built using the nuclear chain reaction principle. In 1939, familiar with the German efforts to build a nuclear pile and possibly weaponize it afterwards, Szilard convinced Albert Einstein to send a warning letter to the US President, Franklin Roosevelt. This in turn resulted in the eventual creation of the Manhattan District project, and, in 1945, the production of the first functional atomic weapon.
1945
There were no nuclear tests in Mississippi.
1945
1949
1945 was the first year that a Nuclear bomb was successfully tested then used in combat.
India detonated it's first nuclear weapon on 1974at (POKRAN)a desert area in RAJASTHAN.
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Fusion produces no radioactive waste, and can yield a constant flow of energy instead of in nuclear fission where a nuclear power plant must be refueled and closed for 40-100 days out of the year.
The first nuclear reactor, CP-1, was built and operated in 1942. It generated no electricity, its peak thermal power was one half watt. The first nuclear power plant was connected to the grid sometime in the 1950s.