Vol. 55, No. 2, 2021

Solar System Research

Geological and Geomorphological Characteristics of High-Priority Landing Sites for the Luna-Glob Mission

S. S. Krasilnikov, A. T. Basilevsky, M. A. Ivanov and A. S. Krasilnikov p. 83 abstract

Release of Matter into the Atmosphere During the Fall of Ten-Kilometer Asteroids into the Ocean

V. V. Shuvalov p. 97 abstract

Transport Characteristics of the Near-Surface Layer of the Nucleus of Comet 67P/Churyumov–Gerasimenko

V. Reshetnyk, Yu. Skorov, M. Vasyuta, M. Bentley, L. Rezac, J. Agarwal and J. Blum p. 106 abstract

Discovery of the First Interstellar Comet and the Spatial Density of Interstellar Objects in the Solar Neighborhood

G. V. Borisov and B. M. Shustov p. 124 abstract

Jeans Instability of a Protoplanetary Circular Disk Taking into Account the Magnetic Field and Radiation in Nonextensive Tsallis Kinetics

A. V. Kolesnichenko p. 132 abstract

Nonthermal Atmospheric Loss of the Exoplanet GJ 436b due to H₂ Dissociation Processes

A. A. Avtaeva and V. I. Shematovich p. 150 abstract

Numerical-Analytical Study of Linked Orbits in the Restricted Elliptic Doubly Averaged Three-Body Problem

M. A. Vashkov’yak p. 159 abstract

Investigation of Hemispherical Variations of Soft X-Ray Solar Flares during Solar Cycles 21 to 24

Amrita Prasad, Soumya Roy, Koushik Ghosh, Subhash Chandra Panja and Sankar Narayan Patra p. 169 abstract