Vol. 55, No. 4, 2021

Solar System Research

Estimation of the Strength of the Lunar Soil by the Depth of the Lunar Rover Wheel Tracks

A. T. Basilevsky, M. I. Malenkov, V. A. Volov, A. M. Abdrakhimov, N. A. Kozlova, A. E. Zubarev and I. E. Nadezhdina p. 285 abstract

On a Possible Process for the Formation of Iron Oxide in the Lunar Regolith

A. Yu. Dubinsky and S. I. Popel p. 309 abstract

The Young Volcanic Rises on Venus: a Key Scientific Target for Future Orbital and in-situ Measurements on Venus

P. D’Incecco, J. Filiberto, I. López, D.A. Gorinov, G. Komatsu, A. Martynov and P. Pisarenko p. 315 abstract

Atmospheric Loss of Atomic Oxygen during Proton Aurorae on Mars

V. I. Shematovich p. 324 abstract

Modeling the Dose Distribution of Electron Radiation on the Surface of Jupiter’s Satellite Europa for Different Magnetic Field Models

O. O. Tsareva, E. P. Popova, V. Yu. Popov, H. V. Malova and L. M. Zeleny p. 335 abstract

Features of the Dynamical Evolution of a Massive Disk of Trans-Neptunian Objects

V. V. Emel’yanenko p. 341 abstract

Decomposition of the Coplanar Potential of the Gaussian Ring in a Series in Degrees of Eccentricity

B. P. Kondratyev, V. S. Kornoukhov and N. G. Trubitsyna p. 348 abstract

Definition of a Parabolic Orbit: the Search for a Solution with Algebraic Equations

V. B. Kuznetsov p. 358 abstract

Testing of a Stellar Interference Coronagraph as Part of a Ground-Based Telescope

A. V. Yudaev, O. Ya. Yakovlev, A. V. Kiselev, V. V. Barke, A. A. Venkstern, I. A. Shashkova and A. V. Tavrov p. 367 abstract

The α-Andromedid Fireball Stream and Meteorite-Producing Fireball over Slovakia

A. K. Terentjeva and E. S. Bakanas p. 379 abstract