From left to right: S.P.Korolev — general constructor,
I.V.Kurchatov — the "father" of russian atomic bomb
and academician M.V.Keldysh (1956)

From left to right: general constructor S.P.Korolev ,
cosmonaut #2 G.S.Titov and academician M.V.Keldysh (11.08.1961)