Free Astronomy Books

This is the updated list of astronomy books available for free download or online reading. These books and papers cover all the areas of astrophysics, cosmology, galactic and extragalactic astronomy, solar and stellar physics, celestial mechanics, planetary science, astrobiology, as well as some popular works. The books are made available free of charge to the reader by their authors or publishers. Here is a categorized directory of astronomy books. This page is updated daily.

1. Celestial Navigation, Elementary Astronomy, Piloting
   Arturo Chiesa, Raffaele Chiesa | Sky and Sea Software, Published in 2010
2. Handbook of Space Astronomy and Astrophysics
   Martin V. Zombeck | Cambridge University Press, Published in 2006, 780 pages
3. Why CMB physics?
   Massimo Giovannini | arXiv, Published in 2007, 179 pages
4. An Introduction to Cosmic Rays and Gamma-Ray Bursts
   A. De Rujula | arXiv, Published in 2007, 37 pages
5. The world according to the Hubble Space Telescope
   Mario Livio | arXiv.org, Published in 2008, 112 pages
6. The Cosmic Web: Geometric Analysis
   Rien van de Weygaert, Willem Schaap | arXiv, Published in 2007, 129 pages
7. Habitable Planets for Man
   Stephen H. Dole | RAND Corporation, Published in 1964, 176 pages
8. History of Astronomy
   George Forbes | , Published in 1909
9. Observing the Sky from 30S
   Roberto Mura | Wikibooks, Published in 2010, 86 pages
10. From Cosmic Birth to Living Earths: The Future of UVOIR Space Astronomy
    Julianne Dalcanton, et al. | arXiv, Published in 2015, 176 pages
11. A practical guide to Basic Statistical Techniques for Data Analysis in Cosmology
    Licia Verde | arXiv, Published in 2008, 52 pages
12. Elements of Astrophysics
    Nick Kaiser | University of Hawaii, Published in 2002, 435 pages
13. Magnetic Fields, Strings and Cosmology
    Massimo Giovannini | arXiv, Published in 2006, 76 pages
14. Observational Probes of Cosmic Acceleration
    David H. Weinberg, et al. | arXiv, Published in 2012, 253 pages
15. Chemistry in Protoplanetary Disks
    Thomas Henning, Dmitry Semenov | arXiv, Published in 2013, 84 pages
16. An Introduction to Celestial Mechanics
    Forest Ray Moulton | The MacMillan Company, Published in 1914, 437 pages
17. Galaxies and the Expanding Universe
    James Schombert | University of Oregon, Published in 2008
18. Voyager Encounters Jupiter
    | National Aeronautics and Space Administration, Published in 1979, 48 pages
19. Moon Trip: A Personal Account of the Apollo Program and its Science
    Elbert A. King | Lunar and Planetary Institute, Published in 1989, 162 pages
20. Observatories in Space
    Catherine Turon | arXiv, Published in 2011, 50 pages
21. Astrochemistry: The Issue of Molecular Complexity in Astrophysical Environments
    M. De Becker | arXiv, Published in 2013, 62 pages
22. General Astronomy
    Harold Spencer Jones | Edward Arnold and Company, Published in 1924, 392 pages
23. Origin of the Moon
    W. K. Hartmann, R. J. Phillips, G. J. Taylor | Lunar and Planetary Institute, Published in 1986, 781 pages
24. Ultrahigh Energy Cosmic Rays: Facts, Myths, and Legends
    Luis Alfredo Anchordoqui | arXiv, Published in 2011, 92 pages
25. The Astronomy of the Bible
    E. Walter Maunder | Richard Clay & Sons, Published in 1908
26. Introduction to Early Universe Cosmology
    Robert H. Brandenberger | arXiv, Published in 2011, 70 pages
27. Gravitational Waves: Sources, Detectors and Searches
    Keith Riles | arXiv, Published in 2012, 79 pages
28. The Story of Eclipses
    George F. Chambers | S. S. McClure Co., Published in 1909, 208 pages
29. Primordial Magnetogenesis
    Alejandra Kandus, Kerstin E. Kunze, Christos G. Tsagas | arXiv, Published in 2011, 107 pages
30. The Telescope
    Louis Bell | McGraw-Hill, Published in 1922, 294 pages
31. Lunar Stratigraphy and Sedimentology
    John Lindsay | Elsevier, Published in 1976, 311 pages
32. The Astrobiology Primer: An Outline of General Knowledge
    Lucas J. Mix, at al. | arXiv, Published in 2006, 79 pages
33. Galaxy systems in the optical and infrared
    A. Biviano | arXiv, Published in 2008, 60 pages
34. Plasma Physics of Extreme Astrophysical Environments
    Dmitri A. Uzdensky, Shane Rightley | arXiv, Published in 2014, 56 pages
35. Astronomy
    Andrew Fraknoi, David Morrison, Sidney C. Wolff | Unglue.it, Published in 2016, 1200 pages
36. From Disks to Planets
    Andrew N. Youdin, Scott J. Kenyon | arXiv, Published in 2012, 70 pages
37. An introductory treatise on the lunar theory
    Ernest W Brown | Cambridge University Press, Published in 1896, 312 pages
38. String Cosmology
    James M. Cline | arXiv, Published in 2007, 47 pages
39. Elementary Mathematical Astronomy
    C. Barlow, G. Bryan | University Correspondence College Press, Published in 1893, 442 pages
40. Notes on Stellar Astrophysics
    James N. Pierce | Minnesota State University, Published in 2013, 299 pages
41. Great Astronomers
    Robert S. Ball | Isbister, Published in 1895, 392 pages
42. Multi-messenger Astronomy and Dark Matter
    Las Bergstrom | arXiv, Published in 2012, 105 pages
43. Mag 7 Star Atlas Project
    Andrew L. Johnson | , Published in 2007, 21 pages
44. Introduction to Non-Baryonic Dark Matter
    Paolo Gondolo | arXiv, Published in 2004, 51 pages
45. The Formation and Evolution of the Solar System
    James Schombert | University of Oregon, Published in 2007
46. Views of the Solar System
    Calvin J. Hamilton | , Published in 2008
47. Star-Gazer's Hand-Book
    Henry William Elson | Sturgis & Walton, Published in 1910, 72 pages
48. To See the Unseen: A History of Planetary Radar Astronomy
    Andrew J. Butrica | NASA History Division, Published in 1996, 301 pages
49. Cosmic Rays and the Search for a Lorentz Invariance Violation
    Wolfgang Bietenholz | arXiv, Published in 2008, 81 pages
50. Cluster Lenses
    Jean-Paul Kneib, Priyamvada Natarajan | arXiv, Published in 2012, 120 pages
51. A Primer for Black Hole Quantum Physics
    R. Brout, S. Massar, R. Parentani, P. Spindel | arXiv, Published in 2007, 178 pages
52. Protoplanetary Disks and Their Evolution
    Jonathan P. Williams, Lucas A. Cieza | arXiv, Published in 2011, 65 pages
53. The Hubble Constant
    Neal Jackson | arXiv, Published in 2014, 48 pages
54. Introduction to Supersymmetry: Astrophysical and Phenomenological Constraints
    Keith A. Olive | arXiv, Published in 1999, 67 pages
55. Lectures on Inflation and Cosmological Perturbations
    David Langlois | arXiv, Published in 2010, 56 pages
56. Basaltic Volcanism on the Terrestrial Planets
    | Pergamon Press, Published in 1981, 1286 pages
57. Special Functions: Fractional Calculus and the Pathway for Entropy
    Hans J. Haubold (ed.) | MDPI AG, Published in 2018, 306 pages
58. Black-Hole Phenomenology
    Neven Bilic | arXiv, Published in 2006, 58 pages
59. Vision and Voyages for Planetary Science in the Decade 2013-2022
    | National Academy of Sciences, Published in 2011, 410 pages
60. Primordial Nucleosynthesis: from precision cosmology to fundamental physics
    F. Iocco, G. Mangano, G. Miele, O. Pisanti, P.D. Serpico | arXiv, Published in 2009, 148 pages
61. Cosmological Evolution of Galaxies
    Isaac Shlosman | arXiv, Published in 2012, 88 pages
62. Pioneers of Science
    Oliver Lodge | Macmillan and co, Published in 1905, 421 pages
63. The Fine-Tuning of the Universe for Intelligent Life
    Luke A. Barnes | arXiv, Published in 2011, 76 pages
64. Practical Astronomy for Engineers
    Frederick Hanley Seares | Stephens, Published in 1909, 160 pages
65. Observations of the High Redshift Universe
    Richard S. Ellis | arXiv, Published in 2007, 115 pages
66. On the Origin (and Evolution) of Baryonic Galaxy Halos
    Duncan A. Forbes, Ericson D. Lopez | MDPI AG, Published in 2018, 232 pages
67. The Shape of the Universe
    Gerd Pommerenke | viXra, Published in 2013, 321 pages
68. From Chaos to Consciousness: A Brief History of the Universe
    Mike Corwin | Bookboon, Published in 2015, 166 pages
69. Planetary Rings
    Matthew S. Tiscareno | arXiv, Published in 2011, 82 pages
70. Recent Developments in Gravitational Collapse and Spacetime Singularities
    Pankaj S. Joshi, Daniele Malafarina | arXiv, Published in 2012, 89 pages
71. Voyage to Jupiter
    David Morrison, Jane Samz | NASA, Published in 1980, 218 pages
72. An Introduction to Celestial Mechanics
    Richard Fitzpatrick | The University of Texas at Austin, Published in 2011, 216 pages
73. Gamma-Ray Bursts: Progress, Problems and Prospects
    Bing Zhang, Peter Meszaros | arXiv, Published in 2008, 87 pages
74. Evolution of the Solar System
    Hannes Alfven, Gustaf Arrhenius | NASA, Published in 1976
75. Dense Matter in Compact Stars
    Andreas Schmitt | arXiv, Published in 2010, 146 pages
76. Dwarf-Galaxy Cosmology
    Regina Schulte-Ladbeck, at al. | Hindawi Publishing, Published in 2010, 238 pages
77. Cosmic Journey: A History of Scientific Cosmology
    N. S. Hetherington, W. P. McCray | American Institute of Physics, Published in 2009, 344 pages
78. Lunar Orbiter Photographic Atlas of the Moon
    D.E. Hughes, J.K. Bowker | Lunar and Planetary Institute, Published in 1971
79. Astronomy for Amateurs
    Camille Flammarion | D. Appleton and Company, Published in 1910
80. General Astronomy
    | Wikibooks, Published in 2009
81. Advanced Topics in Cosmology: A Pedagogical Introduction
    T. Padmanabhan | arXiv, Published in 2006, 40 pages
82. The Virial Theorem in Stellar Astrophysics
    George W. Collins, II | Pachart Pub. House, Published in 1978, 135 pages
83. A Guide To The Constellations
    Samuel G. Barton | McGraw-Hill, Published in 1928, 96 pages
84. Through the Telescope
    James Baikie | Adam and Charles Black, Published in 1906, 303 pages
85. Inflation and String Theory
    Daniel Baumann, Liam McAllister | arXiv, Published in 2014, 349 pages
86. The Practical Astronomer
    Thomas Dick | Seeley, Burnside, and Seeley, Published in 1845, 588 pages
87. Introduction to Millimeter/Sub-Millimeter Astronomy
    T. L. Wilson | arXiv, Published in 2009, 106 pages
88. Elementary Astronomy
    James N. Pierce | , Published in 2013, 134 pages
89. Practical Astronomy
    P. S. Michie, F. S. Harlow | John Wiley & Sons, Published in 1893, 246 pages
90. Images of the Solar Upper Atmosphere From SUMER on SOHO
    Uri Feldman, at al. | ESA Publications Division, Published in 2003, 209 pages
91. The Complete Idiot's Guide to The Sun
    Jay M. Pasachoff | Alpha, Published in 2003, 350 pages
92. A Practical Introduction to Numerical Hydrodynamics
    Garrelt Mellema | Leiden University, Published in 2003, 124 pages
93. The Geology of the Terrestrial Planets
    Michael H. Carr | NASA, Published in 1984, 322 pages
94. Encyclopedia of Astrophysics
    Søren Bertil F. Dorch | Scholarpedia, Published in 2009
95. Frequently Asked Questions about Calendars
    Claus Tøndering | , Published in 2008, 65 pages
96. Introduction to relativistic astrophysics and cosmology through Maple
    V. L. Kalashnikov | arXiv, Published in 2001, 124 pages
97. Planetary Photometry
    Max Fairbairn | , Published in 2005, 142 pages
98. Mercury
    F. Vilas, C. Chapman, M. Matthews | University of Arizona Press, Published in 1989, 794 pages
99. Cosmic Structure, Averaging and Dark Energy
    David L. Wiltshire | arXiv, Published in 2013, 55 pages
100. A Photographic Atlas of Rock Breakdown Features in Geomorphic Environments
     Mary Bourke, Heather Viles | Planetary Science Institute, Published in 2007, 88 pages
101. Introduction to the Theory of Black Holes
     Gerard 't Hooft | Utrecht University, Published in 2009, 49 pages
102. Modified Gravity and Cosmology
     T. Clifton, P.G. Ferreira, A. Padilla, C. Skordis | arXiv, Published in 2012, 312 pages
103. Spherical Astronomy
     F. Brünnow | Van Nostrand, Published in 1865, 559 pages
104. Practical Astronomy
     George L. Hosmer | John Wiley and Sons Inc., Published in 1925, 314 pages
105. Lectures on Astronomy, Astrophysics, and Cosmology
     Luis A. Anchordoqui | arXiv, Published in 2007, 41 pages
106. An Exposition on Inflationary Cosmology
     Scott Watson | arXiv, Published in 2000, 93 pages
107. Black Holes
     P.K. Townsend | arXiv, Published in 1997, 145 pages
108. Advances in Global and Local Helioseismology: an Introductory Review
     Alexander G. Kosovichev | arXiv, Published in 2011, 86 pages
109. The Search for Extraterrestrial Intelligence, SETI
     Philip Morrison, John Billingham, John Wolfe | NASA, Published in 1979, 293 pages
110. Cosmology and Astrophysics
     Juan Garcia-Bellido | arXiv.org, Published in 2005, 76 pages
111. Curiosities of the Sky
     Garrett Putman Serviss | Harper & Brothers, Published in 1909, 300 pages
112. The Universe in a Helium Droplet
     Grigory E. Volovik | Oxford University Press, Published in 2003, 532 pages
113. Astronomical Discovery
     Herbert Hall Turner | E. Arnold, Published in 1904, 225 pages
114. High Energy Astrophysics
     Jonathan Katz | The Benjamin/Cummings Publishing, Published in 1986, 338 pages
115. Searching for Life Across Space and Time
     | The National Academies Press, Published in 2017, 133 pages
116. Mathematical Problems Of Radiative Equilibrium
     Eberhard Hopf | Cambridge University Press, Published in 1934, 123 pages
117. Exoplanet Observing for Amateurs
     Bruce L. Gary | Reductionist Publications, Published in 2007, 170 pages
118. Cosmology for Particle Physicists
     U. A. Yajnik | arXiv, Published in 2008, 63 pages
119. Advances in Modern Cosmology
     Adnan Ghribi | InTech, Published in 2011, 198 pages
120. Everything You Always Wanted To Know About The Cosmological Constant Problem
     Jerome Martin | arXiv, Published in 2012, 89 pages
121. Cosmology Primer
     Sean Carroll | preposterousuniverse.com, Published in 2012, 120 pages
122. Guidebook to the Geology of Barringer Meteorite Crater, Arizona
     David A. Kring | Lunar and Planetary Institute, Published in 2007, 154 pages
123. The History of Astrometry
     Michael Perryman | arXiv, Published in 2012, 52 pages
124. Astronomy with an Opera-glass
     Garrett Putman Serviss | D. Appleton & co., Published in 1890, 154 pages
125. Inflation
     Marieke Postma | NIKHEF, Published in 2009, 53 pages
126. Techniques of Radio Astronomy
     T. L. Wilson | arXiv, Published in 2011, 47 pages
127. Supernova Remnants: The X-ray Perspective
     Jacco Vink | arXiv, Published in 2011, 78 pages
128. The First Stars
     Simon C. O. Glover | arXiv, Published in 2012, 72 pages
129. Particle Physics Aspects of Modern Cosmology
     Robert H. Brandenberger | arXiv, Published in 1997, 70 pages
130. Chondrules and their Origins
     Elbert A. King | The Lunar and Planetary Institute, Published in 1983, 377 pages
131. Protostars and Planets
     | Rice University, Published in 2015, 422 pages
132. Dynamics of the Universe in Problems
     Yu. L. Bolotin, et al. | UniverseInProblems.com, Published in 2013, 113 pages
133. Ekpyrotic and Cyclic Cosmology
     Jean-Luc Lehners | arXiv, Published in 2009, 79 pages
134. Lopsided Spiral Galaxies
     Chanda J. Jog, Francoise Combes | arXiv, Published in 2008, 75 pages
135. The Fundamentals of Stellar Astrophysics
     George W. Collins, II | W H Freeman & Co, Published in 2003, 494 pages
136. Radiative Processes in High Energy Astrophysics
     Gabriele Ghisellini | arXiv, Published in 2012, 157 pages
137. Quantization in Astrophysics, Brownian Motion, and Supersymmetry
     F. Smarandache, V. Christianto | MathTiger, Published in 2007, 516 pages
138. The Cosmological Constant
     Sean M. Carroll | arXiv, Published in 2000, 50 pages
139. Applied Cosmography: A Pedagogical Review
     Yu. L. Bolotin, et al. | arXiv.org, Published in 2018, 66 pages
140. Amateur Telescope Making
     | Springfield Telescope Makers Inc, Published in 2018, 428 pages
141. Mechanism of the Heavens
     Mary Somerville | J. Murray, Published in 1831, 710 pages
142. An Introduction to Astronomy
     Forest Ray Moulton | The MacMillan Company, Published in 1916, 577 pages
143. A Handbook of Descriptive and Practical Astronomy
     George F. Chambers | Oxford At The Clarendon Press, Published in 1889, 756 pages
144. The Star Splitters: The High Energy Astronomy Observatories
     Wallace H. Tucker | NASA History Office, Published in 1984, 182 pages
145. Supernova Cosmology: Legacy and Future
     Ariel Goobar, Bruno Leibundgut | arXiv, Published in 2011, 62 pages
146. Lecture Notes on High Energy Cosmic Rays
     M. Kachelriess | arXiv.org, Published in 2008, 82 pages
147. High Performance Computing and Numerical Modelling
     Volker Springel | arXiv, Published in 2014, 108 pages
148. The Beginning and Evolution of the Universe
     Bharat Ratra, Michael S. Vogeley | arXiv, Published in 2008, 69 pages
149. Sky Surveys
     S. G. Djorgovski, A.A. Mahabal, A.J. Drake, M.J. Graham, C. Donalek | arXiv, Published in 2012, 62 pages
150. Lecture notes on the formation and early evolution of planetary systems
     Philip J. Armitage | arXiv, Published in 2010, 63 pages
151. Pioneer Saturn Encounter
     | NASA, Published in 1979, 45 pages
152. Lectures on Black Holes, Topological Strings and Quantum Attractors
     Boris Pioline | arXiv, Published in 2007, 103 pages
153. Cosmos and Culture: Cultural Evolution in a Cosmic Context
     Steven J. Dick, Mark L. Lupisella | NASA, Published in 2010, 612 pages
154. An Introduction into the Theory of Cosmological Structure Formation
     Christian Knobel | arXiv, Published in 2012, 102 pages
155. Hours With A Three-Inch Telescope
     William Noble | Longmans, Green & Co., Published in 1887, 159 pages
156. An Introduction to Galactic Chemical Evolution
     Nikos Prantzos | arXiv, Published in 2007, 46 pages
157. Gravitational Wave Experiments and Early Universe Cosmology
     Michele Maggiore | arXiv, Published in 2000, 100 pages
158. Photographs of Nebulae and Clusters
     James Edward Keeler | University of California Publications, Published in 1908
159. Satellites of Jupiter
     David Morrison | University of Arizona Press, Published in 1982, 983 pages
160. Celestial Mechanics: Notes and Work
     J.D. Mireles James | Rutgers University, Published in 2007, 128 pages
161. Consolidated Lunar Atlas
     Gerald P. Kuiper, et al. | Lunar and Planetary Institute, Published in 1960
162. An Expanded View of the Universe
     | European Southern Observatory, Published in 2011, 54 pages
163. To a Rocky Moon: A Geologist's History of Lunar Exploration
     Don E. Wilhelms | University of Arizona Press, Published in 1993, 524 pages
164. Introduction to Cosmology
     A. D. Dolgov | arXiv, Published in 2009, 58 pages
165. A Briefer History of Time: From the Big Bang to the Big Mac
     Eric Schulman | St. Martin's Press, Published in 2004, 207 pages
166. Superstring Cosmology
     James E. Lidsey, David Wands, E. J. Copeland | arXiv, Published in 2000, 161 pages
167. The Birth And Death Of The Sun
     George Gamow | Dover Publications, Published in 1940, 256 pages
168. Big Bang Nucleosynthesis and Physics Beyond the Standard Model
     Subir Sarkar | arXiv, Published in 1996, 156 pages
169. Neutrinos and the Stars
     Georg Raffelt | arXiv, Published in 2012, 83 pages
170. Short History of Astronomy
     Arthur Berry | John Murray, Published in 1898, 439 pages
171. Astronomy of To-day
     Cecil Goodrich Julius Dolmage | Seeley and co., Published in 1910
172. Hubble 25: A Quarter-Century of Discovery with the Hubble Space Telescope
     Dylan Steele (ed.) | NASA, Published in 2015, 78 pages
173. The Foundations of Celestial Mechanics
     George W. Collins, II | Pachart Pub House, Published in 2004, 145 pages
174. Mysteries of the Sun
     Ginger Butcher | NASA, Published in 2012, 22 pages
175. Primer Of Celestial Navigation
     John Favill | Cornell Maritime Press, Published in 1944, 300 pages
176. Atomic and Molecular Processes in Astronomy and Planetary Science
     Geoffrey A. Blake | California Institute of Technology, Published in 2004
177. Planetary Science: A Lunar Perspective
     Stuart Ross Taylor | Lunar and Planetary Institute, Published in 1982
178. Atlas of Peculiar Galaxies
     Halton C. Arp | California Institute of Technology, Published in 1966, 190 pages
179. When Biospheres Collide: A History of NASA's Planetary Protection Programs
     Michael Meltzer | NASA, Published in 2011, 542 pages
180. Observing the Sky from 40N
     Roberto Mura | Wikibooks, Published in 2010, 86 pages
181. Gravitational Wave Detection by Interferometry
     Matthew Pitkin, Stuart Reid, Sheila Rowan, Jim Hough | arXiv, Published in 2011, 80 pages
182. Archaeology, Anthropology, and Interstellar Communication
     Douglas A. Vakoch | NASA, Published in 2014, 330 pages
183. Particle Physics and Inflationary Cosmology
     Andrei Linde | arXiv, Published in 2005, 270 pages
184. Cosmology: The Study of the Universe
     | NASA, Published in 2009, 38 pages
185. Massive Stars and their Supernovae
     F. Thielemann, R. Hirschi, M. Liebendorfer, R. Diehl | arXiv, Published in 2010, 81 pages
186. The Birth and Death of Stars
     James Schombert | University of Oregon, Published in 2008
187. Man's Place in the Universe
     Alfred R. Wallace | Chapman and Hall, Published in 1904, 330 pages
188. A Simple Guide to Backyard Astronomy
     Carol Beigel | , Published in 2008, 61 pages
189. Recreations in Astronomy
     Henry White Warren | Project Gutenberg,
190. A Review of the Universe: Structures, Evolutions, Observations, and Theories
     | universe-review.ca, Published in 2009
191. Cosmology
     James Schombert | University of Oregon, Published in 2008
192. Cosmic Microwave Background Anisotropies up to Second Order
     Nicola Bartolo, Sabino Matarrese, Antonio Riotto | arXiv, Published in 2007, 53 pages
193. Solar Neutrinos
     V. Antonelli, L. Miramonti, C. Pena-Garay, A. Serenelli | arXiv, Published in 2012, 51 pages
194. Space Nomads
     Leota Jean LaPaz, Lincoln LaPaz | Holiday House, Published in 1961, 199 pages
195. Mathematical Theories of Planetary Motions
     Otto Dziobek | The Register Pub. Co., Published in 1892, 314 pages
196. Introduction to Physical Astronomy
     Kenneth R. Koehler | University of Cincinnati, Published in 2010
197. Inflationary Cosmology and Structure Formation
     J. A. Peacock | arXiv, Published in 1996, 77 pages
198. Planetary Theory
     Ernest Brown, Clarence Shook | Cambridge University Press, Published in 1933, 323 pages
199. Celestial Mechanics
     J. B. Tatum | , Published in 2008, 244 pages
200. Dark Energy: Observational Evidence and Theoretical Models
     B. Novosyadlyj, V. Pelykh, Yu. Shtanov, A. Zhuk | Akademperiodyka, Published in 2013, 380 pages
201. Textbook on Practical Astronomy
     George Leonard Hosmer | Wiley, Published in 1910, 252 pages
202. Astronomy Notes
     Nick Strobel | astronomynotes.com, Published in 2010
203. Are We Alone?
     Gregg Easterbrook | The Atlantic Monthly, Published in 1988
204. Telescopic Work for Starlight Evenings
     William F. Denning | Taylor and Francis, Published in 1891, 372 pages
205. A New Astronomy
     David Peck Todd | American Book Company, Published in 1906, 437 pages
206. An Introduction to Quantum Cosmology
     D.L. Wiltshire | arXiv, Published in 2003, 60 pages
207. TASI Lectures: Introduction to Cosmology
     Mark Trodden, Sean M. Carroll | arXiv, Published in 2004, 82 pages
208. Resources of Near-Earth Space
     J. S. Lewis, M. S. Matthews | University of Arizona Press, Published in 1993, 977 pages
209. An Introduction to the Theory of Rotating Relativistic Stars
     Eric Gourgoulhon | arXiv, Published in 2010, 88 pages
210. A Text-book of Astronomy
     George C. Comstock | D. Appleton and company, Published in 1901, 391 pages
211. Voyager 1 and 2: Atlas of Six Saturnian Satellites
     Raymond M. Batson | NASA, Published in 1984, 182 pages
212. Cosmology
     V. A. Rubakov | arXiv.org, Published in 2018, 56 pages
213. Large Scale Structure of the Universe
     Alison L. Coil | arXiv, Published in 2012, 43 pages
214. Introduction to Dark Matter Experiments
     R. W. Schnee | arXiv.org, Published in 2011, 64 pages
215. The Solar Magnetic Field
     Sami Solanki, Bernd Inhester, Manfred Schussler | arXiv, Published in 2010, 83 pages
216. Cosmic Rays in Galactic and Extragalactic Magnetic Fields
     F. Aharonian, A. Bykov, E. Parizot, V. Ptuskin, A. Watson | arXiv, Published in 2011, 43 pages
217. Cosmology: Mankind's Grand Investigation
     Greg Bothun | Harcourt Brace College Publishers, Published in 1999, 129 pages
218. Astronomical Image and Data Analysis
     J.-L. Starck, F. Murtagh | Springer, Published in 2006, 335 pages
219. The Galactic Habitable Zone I. Galactic Chemical Evolution
     G. Gonzalez, D. Brownlee, P. Ward | arXiv, Published in 2001, 57 pages
220. Traces of Catastrophe
     Bevan M French | Lunar and Planetary Institute, Published in 1998, 120 pages
221. Introduction to Cosmology
     David H Lyth | arXiv, Published in 1993, 53 pages
222. Stellar Superfluids
     Dany Page, et al. | arXiv, Published in 2013, 88 pages
223. Stellar Atmospheres
     J. B. Tatum | , Published in 2006, 302 pages
224. Radiative Gas Dynamics
     David Weinberg | Ohio State University, Published in 2007
225. Voyager 1 Encounters Saturn
     | NASA, Published in 1980, 51 pages
226. The Elements of Theoretical and Descriptive Astronomy
     Charles J. White | J. Wiley, Published in 1909, 322 pages
227. Astronuclear Physics: a Tale of the Atomic Nuclei in the Skies
     M. Arnould, S. Goriely | arXiv.org, Published in 2020, 100 pages
228. Introductory Lectures on Quantum Cosmology
     J. J. Halliwell | arXiv, Published in 1990, 107 pages
229. Understanding Galaxy Formation and Evolution
     V. Avila-Reese | arXiv, Published in 2006, 50 pages
230. The Beginning and the End: The Meaning of Life in a Cosmological Perspective
     Clement Vidal | arXiv, Published in 2013, 356 pages
231. First Light
     Abraham Loeb | arXiv, Published in 2006, 157 pages