1. Discrepancy between Values of the Hubble Constant Obtained by Different Methods

   • H. A. Harutyunian

   OriginalPaper 26 November 2021 Pages: 435 - 445

2. Environmental Dependence of All the Five Band Luminosities of Active Galactic Nucleus (AGN) Host Galaxies

   • Yong Xin
   • Xin-Fa Deng

   OriginalPaper 26 November 2021 Pages: 446 - 457

3. Multicolor Photometry of the WZ Sge-Type Cataclysmic Variable AY Lac

   • S. Yu. Shugarov
   • M. D. Afonina
   • A. V. Zharova

   OriginalPaper 26 November 2021 Pages: 458 - 472

4. Several Star-Formation Regions in the Southern Hemisphere

   • A. L. Gyulbudaghian

   OriginalPaper 26 November 2021 Pages: 473 - 480

5. Dust Luminescence and Gas Fluorescence in the CED 201 Nebula

   • I. A. Simonia

   OriginalPaper 26 November 2021 Pages: 481 - 489

6. Time Dependent Radiative Transfer Problems in a One-Dimensional Medium

   • A. G. Nikoghossian

   OriginalPaper 26 November 2021 Pages: 490 - 503

7. White Dwarfs in a Uniform Sphere Approximation, with General Relativity Effects Taken into Account

   • G. S. Bisnovatyi-Kogan
   • E. A. Patraman

   OriginalPaper 26 November 2021 Pages: 504 - 511

8. Modified Renyi Holographic Dark Energy (MRHDE) in f(R, T) Theory of Gravity

   • J. Bharali
   • K. Das

   OriginalPaper 26 November 2021 Pages: 512 - 528

9. Fermionic Condensate in de Sitter Spacetime

   • A. A. Saharian
   • E. R. Bezerra de Mello
   • T. A. Petrosyan

   OriginalPaper 26 November 2021 Pages: 529 - 543