1. Radio Properties of FR0 Galaxies According to Multifrequency Measurements with RATAN-600

   • A. G. Mikhailov
   • Yu. V. Sotnikova

   OriginalPaper 27 April 2021 Pages: 233 - 245

   

2. Exoplanet Population Synthesis with Account for Orbit Variation Due to Stellar Evolution

   • A. S. Andryushin
   • S. B. Popov

   OriginalPaper 27 April 2021 Pages: 246 - 268

   

3. Prospects of Observing Gamma-Ray Bursts with Orbital Detectors of Ultra-High-Energy Cosmic Rays

   • M. S. Pshirkov
   • M. Yu. Zotov

   OriginalPaper 27 April 2021 Pages: 269 - 274

4. Life as the Only Reason for the Existence of N₂–O₂-Dominated Atmospheres

   • L. Sproß
   • M. Scherf
   • H. Lammer

   OriginalPaper 27 April 2021 Pages: 275 - 296

   

5. Calculation of the Linear Polarization Degree of the Proton-Induced H_α Line Emission in Solar Flares

   • M. B. Shapochkin

   OriginalPaper 27 April 2021 Pages: 297 - 304

   

6. Time Evolution of a Cometary Spear of the Sun

   • A. V. Tutukov
   • M. D. Sizova
   • S. V. Vereshchagin

   OriginalPaper 27 April 2021 Pages: 305 - 311

   

7. Central Field Motion with Perturbing Acceleration Varying by the Inverse Square Law: Application to the Yarkovsky Effect

   • T. N. Sannikova

   OriginalPaper 27 April 2021 Pages: 312 - 321

8. Analysis of Study Results of the Polar Coronal Hole on the Sun According to Observations in the Microwave Wavelength Range

   • O. A. Golubchina

   OriginalPaper 27 April 2021 Pages: 322 - 330

   

9. Ways for Improving the Accuracy of Measuring the Parameters of the Earth’s Gravitational Field Using an Orbital Spacecraft Constellation

   • V. K. Milyukov
   • A. I. Filetkin
   • A. S. Zhamkov

   OriginalPaper 27 April 2021 Pages: 331 - 341