1. Relic Radiation and the Modern Cosmological Model

   • O. V. Verkhodanov

   OriginalPaper 10 March 2021 Pages: 153 - 169

   

2. Restoration of the Parameters of a Gas-Dust Disk Based on Its Synthetic Images

   • A. M. Skliarevskii
   • Ya. N. Pavlyuchenkov
   • E. I. Vorobyov

   OriginalPaper 10 March 2021 Pages: 170 - 183

   

3. The Physical Parameters of V680 Mon—Eclipsing Star with the Highest Known Eccentricity

   • I. M. Volkov
   • A. S. Kravtsova
   • D. Chochol

   OriginalPaper 10 March 2021 Pages: 184 - 202

   

4. Effect of Variations in the Extended Hydrogen Corona of Mars on the Efficiency of Charge Exchange with Solar Wind Protons

   • V. I. Shematovich
   • D. V. Bisikalo
   • A. G. Zhilkin

   OriginalPaper 10 March 2021 Pages: 203 - 208

   

5. Improving the Orbits of Four Visual Binaries Using Gaia DR2 Data and Observations with the 26-inch Refractor of Pulkovo Observatory

   • L. G. Romanenko
   • I. S. Izmailov

   OriginalPaper 10 March 2021 Pages: 209 - 223

   

6. Analysis of Latitude Observations and Data of Satellite Navigation Systems to Determine Geodynamic Parameters

   • R. R. Mubarakshina
   • V. V. Lapaeva
   • A. O. Andreev

   OriginalPaper 10 March 2021 Pages: 224 - 232