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