a National Research Center "Kurchatov Institute", Alikhanov Institute of Theoretical and Experimental Physics, ul. B. Cheremushkinskaya 25, Moscow, 117218, Russian Federation
b Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russian Federation
c Kavli Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, 277-8568, Japan
d Dukhov Research Institute of Automatics, ul. Sushchevskaya 22, Moscow, 119017, Russian Federation
An overview is given of the current status of the theory and observations of the acceleration of expansion the observable part of the universe.