Reviews of topical problems

A.V. Tutukov, A.M. Cherepashchuk “Evolution of close binary stars: theory and observations” Phys. Usp. 63 209–244 (2020)

G.N. Makarov “New results for laser isotope separation using low-energy methods” Phys. Usp. 63 245–268 (2020)

A.B. Borisov “Localized structures in magnetic systems without the center of inversion” Phys. Usp. 63 269–288 (2020)

Instruments and methods of investigation

T.A. Isaev “Direct laser cooling of molecules” Phys. Usp. 63 289–302 (2020)

Methodological notes

A.P. Potylitsyn, D.Yu. Sergeeva, M.N. Strikhanov, A.A. Tishchenko “Diffraction radiation from a charge as radiation from a superluminal source in a vacuum” Phys. Usp. 63 303–308 (2020)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet (based on electronic preprints)” Phys. Usp. 63 309–310 (2020)