|Lat: 34.0°N, Long: 105.7°E, Diam: 122 km, Depth: km, Rükl: (farside), pre-Nectarian|
left:LOV 181-M, right: LRO-WAC Szilard is the big crater at center, with floor crossed by bright rays from Giordano Bruno, at upper left
Leó Szilárd (February 11, 1898 – May 30, 1964) was a Hungarian-American physicist who conceived the nuclear chain reaction. Szilárd was directly responsible for the creation of the Manhattan Project. He drafted a confidential letter to Franklin D. Roosevelt explaining the possibility of nuclear weapons, warning of Nazi work on such weapons and encouraging the development of a program which could lead to their creation.