Vol. 59, No. 2, 2021

Cosmic Research

On the Probable Change of the Status of the Current Unusual Failure of 11-Year Solar Cyclicity from Local to Global

V. I. Kozlov p. 71 abstract

Development of the Project for Reconstruction of the Havana Radio Astronomy Station as Part of the Russian Solar and Space Weather Services

V. M. Bogod, A. A. Storozhenko, A. G. Tlatov, K. M. Kuzanyan, A. A. Abunin, S. V. Lesovoy, Omar Pons, Marta Uratsuka, Ramses Zaldívar and Sierra Pablo p. 80 abstract

Postvolcanic Aerosols: Measurements of Altitude and Particle Sizes with Twilight-Sky Polarimetry

O. S. Ugolnikov and I. A. Maslov p. 89 abstract

Lower Ionosphere of the Arctic in June 2015 during a Strong Magnetic Storm and Solar X-Ray Flares According to Eclipsing Radiosonde Data on GPS–Formosat Intersatellite Paths

S. S. Matyugov, O. I. Yakovlev and A. A. Pavel’ev p. 96 abstract

Development of the Common Classification of Hazard Events in Near-Earth Space

E. A. Pavlova, M. V. Zakhvatkin, A. I. Streltsov, V. A. Voropaev and L. V. Elenin p. 104 abstract

Investigation of Steady-State Motion of an Artificial Earth Satellite in the Uniaxial Magnetic Orientation Mode

A. I. Ignatov and V. V. Sazonov p. 112 abstract

Reconstruction of Rotational Motion of the Progress Spacecraft in the Mode of One-Axis Solar Orientation According to Solar Array Current Measurements

M. Yu. Belyaev, T. V. Matveeva, M. I. Monakhov, D. N. Rulev and V. V. Sazonov p. 126 abstract

Contents

Cosmic Research