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. The History of Astrometry
   Michael Perryman | arXiv, Published in 2012, 52 pages
2. From Disks to Planets
   Andrew N. Youdin, Scott J. Kenyon | arXiv, Published in 2012, 70 pages
3. An Expanded View of the Universe
   | European Southern Observatory, Published in 2011, 54 pages
4. Chemistry in Protoplanetary Disks
   Thomas Henning, Dmitry Semenov | arXiv, Published in 2013, 84 pages
5. On the Origin (and Evolution) of Baryonic Galaxy Halos
   Duncan A. Forbes, Ericson D. Lopez | MDPI AG, Published in 2018, 232 pages
6. Cosmic Microwave Background Anisotropies up to Second Order
   Nicola Bartolo, Sabino Matarrese, Antonio Riotto | arXiv, Published in 2007, 53 pages
7. Great Astronomers
   Robert S. Ball | Isbister, Published in 1895, 392 pages
8. The Formation and Evolution of the Solar System
   James Schombert | University of Oregon, Published in 2007, 233 pages
9. Astronomical Image and Data Analysis
   J.-L. Starck, F. Murtagh | Springer, Published in 2006, 335 pages
10. Astrochemistry: The Issue of Molecular Complexity in Astrophysical Environments
    M. De Becker | arXiv, Published in 2013, 62 pages
11. A Guide To The Constellations
    Samuel G. Barton | McGraw-Hill, Published in 1928, 96 pages
12. Cosmology Primer
    Sean Carroll | preposterousuniverse.com, Published in 2012, 120 pages
13. General Astronomy
    Harold Spencer Jones | Edward Arnold and Company, Published in 1924, 392 pages
14. Introduction to Supersymmetry: Astrophysical and Phenomenological Constraints
    Keith A. Olive | arXiv, Published in 1999, 67 pages
15. An Introduction to Celestial Mechanics
    Forest Ray Moulton | The MacMillan Company, Published in 1914, 437 pages
16. Practical Astronomy
    P. S. Michie, F. S. Harlow | John Wiley & Sons, Published in 1893, 246 pages
17. Neutrinos and the Stars
    Georg Raffelt | arXiv, Published in 2012, 83 pages
18. To See the Unseen: A History of Planetary Radar Astronomy
    Andrew J. Butrica | NASA History Division, Published in 1996, 301 pages
19. Atomic and Molecular Processes in Astronomy and Planetary Science
    Geoffrey A. Blake | California Institute of Technology, Published in 2004
20. Are We Alone?
    Gregg Easterbrook | The Atlantic Monthly, Published in 1988
21. Ultrahigh Energy Cosmic Rays: Facts, Myths, and Legends
    Luis Alfredo Anchordoqui | arXiv, Published in 2011, 92 pages
22. The Telescope
    Louis Bell | McGraw-Hill, Published in 1922, 294 pages
23. The Solar Magnetic Field
    Sami Solanki, Bernd Inhester, Manfred Schussler | arXiv, Published in 2010, 83 pages
24. Big Bang Nucleosynthesis and Physics Beyond the Standard Model
    Subir Sarkar | arXiv, Published in 1996, 156 pages
25. Origin of the Moon
    W. K. Hartmann, R. J. Phillips, G. J. Taylor | Lunar and Planetary Institute, Published in 1986, 781 pages
26. The Hubble Constant
    Neal Jackson | arXiv, Published in 2014, 48 pages
27. Amateur Telescope Making
    | Springfield Telescope Makers Inc, Published in 2018, 428 pages
28. Solar Neutrinos
    V. Antonelli, L. Miramonti, C. Pena-Garay, A. Serenelli | arXiv, Published in 2012, 51 pages
29. Introductory Lectures on Quantum Cosmology
    J. J. Halliwell | arXiv, Published in 1990, 107 pages
30. 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
31. Inflation and String Theory
    Daniel Baumann, Liam McAllister | arXiv, Published in 2014, 349 pages
32. An Exposition on Inflationary Cosmology
    Scott Watson | arXiv, Published in 2000, 93 pages
33. Mag 7 Star Atlas Project
    Andrew L. Johnson | , Published in 2007, 21 pages
34. The First Stars
    Simon C. O. Glover | arXiv, Published in 2012, 72 pages
35. Protoplanetary Disks and Their Evolution
    Jonathan P. Williams, Lucas A. Cieza | arXiv, Published in 2011, 65 pages
36. Planetary Science: A Lunar Perspective
    Stuart Ross Taylor | Lunar and Planetary Institute, Published in 1982
37. Planetary Theory
    Ernest Brown, Clarence Shook | Cambridge University Press, Published in 1933, 323 pages
38. Dark Energy: Observational Evidence and Theoretical Models
    B. Novosyadlyj, V. Pelykh, Yu. Shtanov, A. Zhuk | Akademperiodyka, Published in 2013, 380 pages
39. Galaxy systems in the optical and infrared
    A. Biviano | arXiv, Published in 2008, 60 pages
40. The Astronomy of the Bible
    E. Walter Maunder | Richard Clay & Sons, Published in 1908
41. String Cosmology
    James M. Cline | arXiv, Published in 2007, 47 pages
42. Radiative Gas Dynamics
    David Weinberg | Ohio State University, Published in 2007
43. The Beginning and the End: The Meaning of Life in a Cosmological Perspective
    Clement Vidal | arXiv, Published in 2013, 356 pages
44. An Introduction to Quantum Cosmology
    D.L. Wiltshire | arXiv, Published in 2003, 60 pages
45. A Text-book of Astronomy
    George C. Comstock | D. Appleton and company, Published in 1901, 391 pages
46. Cluster Lenses
    Jean-Paul Kneib, Priyamvada Natarajan | arXiv, Published in 2012, 120 pages
47. Introduction to Physical Astronomy
    Kenneth R. Koehler | University of Cincinnati, Published in 2010
48. Astronomy
    Andrew Fraknoi, David Morrison, Sidney C. Wolff | Unglue.it, Published in 2016, 1200 pages
49. Lectures on Black Holes, Topological Strings and Quantum Attractors
    Boris Pioline | arXiv, Published in 2007, 103 pages
50. High Energy Astrophysics
    Jonathan Katz | The Benjamin/Cummings Publishing, Published in 1986, 338 pages
51. Through the Telescope
    James Baikie | Adam and Charles Black, Published in 1906, 303 pages
52. Black Holes
    P.K. Townsend | arXiv, Published in 1997, 145 pages
53. A Practical Introduction to Numerical Hydrodynamics
    Garrelt Mellema | Leiden University, Published in 2003, 124 pages
54. The Fine-Tuning of the Universe for Intelligent Life
    Luke A. Barnes | arXiv, Published in 2011, 76 pages
55. To a Rocky Moon: A Geologist's History of Lunar Exploration
    Don E. Wilhelms | University of Arizona Press, Published in 1993, 524 pages
56. The Virial Theorem in Stellar Astrophysics
    George W. Collins, II | Pachart Pub. House, Published in 1978, 135 pages
57. Mathematical Theories of Planetary Motions
    Otto Dziobek | The Register Pub. Co., Published in 1892, 314 pages
58. Man's Place in the Universe
    Alfred R. Wallace | Chapman and Hall, Published in 1904, 330 pages
59. Advanced Topics in Cosmology: A Pedagogical Introduction
    T. Padmanabhan | arXiv, Published in 2006, 40 pages
60. Mysteries of the Sun
    Ginger Butcher | NASA, Published in 2012, 22 pages
61. Astronomy with an Opera-glass
    Garrett Putman Serviss | D. Appleton & co., Published in 1890, 154 pages
62. Mercury
    F. Vilas, C. Chapman, M. Matthews | University of Arizona Press, Published in 1989, 794 pages
63. Magnetic Fields, Strings and Cosmology
    Massimo Giovannini | arXiv, Published in 2006, 76 pages
64. Quantization in Astrophysics, Brownian Motion, and Supersymmetry
    F. Smarandache, V. Christianto | MathTiger, Published in 2007, 516 pages
65. Notes on Stellar Astrophysics
    James N. Pierce | Minnesota State University, Published in 2013, 299 pages
66. Galaxies and the Expanding Universe
    James Schombert | University of Oregon, Published in 2008, 146 pages
67. Mathematical Problems Of Radiative Equilibrium
    Eberhard Hopf | Cambridge University Press, Published in 1934, 123 pages
68. Recreations in Astronomy
    Henry White Warren | Project Gutenberg,
69. Chondrules and their Origins
    Elbert A. King | The Lunar and Planetary Institute, Published in 1983, 377 pages
70. Star-Gazer's Hand-Book
    Henry William Elson | Sturgis & Walton, Published in 1910, 72 pages
71. Textbook on Practical Astronomy
    George Leonard Hosmer | Wiley, Published in 1910, 252 pages
72. Pioneer Saturn Encounter
    | NASA, Published in 1979, 45 pages
73. The Shape of the Universe
    Gerd Pommerenke | viXra, Published in 2013, 321 pages
74. Observational Probes of Cosmic Acceleration
    David H. Weinberg, et al. | arXiv, Published in 2012, 253 pages
75. Gravitational Wave Detection by Interferometry
    Matthew Pitkin, Stuart Reid, Sheila Rowan, Jim Hough | arXiv, Published in 2011, 80 pages
76. Lectures on Inflation and Cosmological Perturbations
    David Langlois | arXiv, Published in 2010, 56 pages
77. Introduction to the Theory of Black Holes
    Gerard 't Hooft | Utrecht University, Published in 2009, 49 pages
78. Cosmic Structure, Averaging and Dark Energy
    David L. Wiltshire | arXiv, Published in 2013, 55 pages
79. The Birth And Death Of The Sun
    George Gamow | Dover Publications, Published in 1940, 256 pages
80. Astronomy Notes
    Nick Strobel | astronomynotes.com, Published in 2010
81. Astronuclear Physics: a Tale of the Atomic Nuclei in the Skies
    M. Arnould, S. Goriely | arXiv.org, Published in 2020, 100 pages
82. Ekpyrotic and Cyclic Cosmology
    Jean-Luc Lehners | arXiv, Published in 2009, 79 pages
83. Special Functions: Fractional Calculus and the Pathway for Entropy
    Hans J. Haubold (ed.) | MDPI AG, Published in 2018, 306 pages
84. The Universe in a Helium Droplet
    Grigory E. Volovik | Oxford University Press, Published in 2003, 532 pages
85. The Star Splitters: The High Energy Astronomy Observatories
    Wallace H. Tucker | NASA History Office, Published in 1984, 182 pages
86. Introduction to Non-Baryonic Dark Matter
    Paolo Gondolo | arXiv, Published in 2004, 51 pages
87. Introduction to relativistic astrophysics and cosmology through Maple
    V. L. Kalashnikov | arXiv, Published in 2001, 124 pages
88. Views of the Solar System
    Calvin J. Hamilton | , Published in 2008
89. An Introduction to Celestial Mechanics
    Richard Fitzpatrick | The University of Texas at Austin, Published in 2011, 216 pages
90. Cosmology
    V. A. Rubakov | arXiv.org, Published in 2018, 56 pages
91. Superstring Cosmology
    James E. Lidsey, David Wands, E. J. Copeland | arXiv, Published in 2000, 161 pages
92. Cosmic Journey: A History of Scientific Cosmology
    N. S. Hetherington, W. P. McCray | American Institute of Physics, Published in 2009, 344 pages
93. Planetary Rings
    Matthew S. Tiscareno | arXiv, Published in 2011, 82 pages
94. Introduction to Millimeter/Sub-Millimeter Astronomy
    T. L. Wilson | arXiv, Published in 2009, 106 pages
95. Voyager 1 and 2: Atlas of Six Saturnian Satellites
    Raymond M. Batson | NASA, Published in 1984, 182 pages
96. Black-Hole Phenomenology
    Neven Bilic | arXiv, Published in 2006, 58 pages
97. Elementary Mathematical Astronomy
    C. Barlow, G. Bryan | University Correspondence College Press, Published in 1893, 442 pages
98. Plasma Physics of Extreme Astrophysical Environments
    Dmitri A. Uzdensky, Shane Rightley | arXiv, Published in 2014, 56 pages
99. A Handbook of Descriptive and Practical Astronomy
    George F. Chambers | Oxford At The Clarendon Press, Published in 1889, 756 pages
100. TASI Lectures: Introduction to Cosmology
     Mark Trodden, Sean M. Carroll | arXiv, Published in 2004, 82 pages
101. Understanding Galaxy Formation and Evolution
     V. Avila-Reese | arXiv, Published in 2006, 50 pages
102. Encyclopedia of Astrophysics
     Søren Bertil F. Dorch | Scholarpedia, Published in 2009
103. Cosmos and Culture: Cultural Evolution in a Cosmic Context
     Steven J. Dick, Mark L. Lupisella | NASA, Published in 2010, 612 pages
104. Cosmology: The Study of the Universe
     | NASA, Published in 2009, 38 pages
105. Supernova Remnants: The X-ray Perspective
     Jacco Vink | arXiv, Published in 2011, 78 pages
106. Space Nomads
     Leota Jean LaPaz, Lincoln LaPaz | Holiday House, Published in 1961, 199 pages
107. Moon Trip: A Personal Account of the Apollo Program and its Science
     Elbert A. King | Lunar and Planetary Institute, Published in 1989, 162 pages
108. General Astronomy
     | Wikibooks, Published in 2009
109. Hours With A Three-Inch Telescope
     William Noble | Longmans, Green & Co., Published in 1887, 159 pages
110. A Briefer History of Time: From the Big Bang to the Big Mac
     Eric Schulman | St. Martin's Press, Published in 2004, 207 pages
111. Multi-messenger Astronomy and Dark Matter
     Las Bergstrom | arXiv, Published in 2012, 105 pages
112. A New Astronomy
     David Peck Todd | American Book Company, Published in 1906, 437 pages
113. Radiative Processes in High Energy Astrophysics
     Gabriele Ghisellini | arXiv, Published in 2012, 157 pages
114. Gravitational Wave Experiments and Early Universe Cosmology
     Michele Maggiore | arXiv, Published in 2000, 100 pages
115. Celestial Mechanics: Notes and Work
     J.D. Mireles James | Rutgers University, Published in 2007, 128 pages
116. Traces of Catastrophe
     Bevan M French | Lunar and Planetary Institute, Published in 1998, 120 pages
117. Recent Developments in Gravitational Collapse and Spacetime Singularities
     Pankaj S. Joshi, Daniele Malafarina | arXiv, Published in 2012, 89 pages
118. The Cosmic Web: Geometric Analysis
     Rien van de Weygaert, Willem Schaap | arXiv, Published in 2007, 129 pages
119. The Practical Astronomer
     Thomas Dick | Seeley, Burnside, and Seeley, Published in 1845, 588 pages
120. Observing the Sky from 30S
     Roberto Mura | Wikibooks, Published in 2010, 86 pages
121. Consolidated Lunar Atlas
     Gerald P. Kuiper, et al. | Lunar and Planetary Institute, Published in 1960
122. Observations of the High Redshift Universe
     Richard S. Ellis | arXiv, Published in 2007, 115 pages
123. Supernova Cosmology: Legacy and Future
     Ariel Goobar, Bruno Leibundgut | arXiv, Published in 2011, 62 pages
124. An Introduction to Galactic Chemical Evolution
     Nikos Prantzos | arXiv, Published in 2007, 46 pages
125. Lectures on Astronomy, Astrophysics, and Cosmology
     Luis A. Anchordoqui | arXiv, Published in 2007, 41 pages
126. Inflationary Cosmology and Structure Formation
     J. A. Peacock | arXiv, Published in 1996, 77 pages
127. Practical Astronomy
     George L. Hosmer | John Wiley and Sons Inc., Published in 1925, 314 pages
128. Gamma-Ray Bursts: Progress, Problems and Prospects
     Bing Zhang, Peter Meszaros | arXiv, Published in 2008, 87 pages
129. Curiosities of the Sky
     Garrett Putman Serviss | Harper & Brothers, Published in 1909, 300 pages
130. Habitable Planets for Man
     Stephen H. Dole | RAND Corporation, Published in 1964, 176 pages
131. Lecture notes on the formation and early evolution of planetary systems
     Philip J. Armitage | arXiv, Published in 2010, 63 pages
132. Primer Of Celestial Navigation
     John Favill | Cornell Maritime Press, Published in 1944, 300 pages
133. An Introduction to Astronomy
     Forest Ray Moulton | The MacMillan Company, Published in 1916, 577 pages
134. Satellites of Jupiter
     David Morrison | University of Arizona Press, Published in 1982, 983 pages
135. Particle Physics Aspects of Modern Cosmology
     Robert H. Brandenberger | arXiv, Published in 1997, 70 pages
136. Introduction to Cosmology
     David H Lyth | arXiv, Published in 1993, 53 pages
137. Introduction to Cosmology
     A. D. Dolgov | arXiv, Published in 2009, 58 pages
138. A Simple Guide to Backyard Astronomy
     Carol Beigel | , Published in 2008, 61 pages
139. Handbook of Space Astronomy and Astrophysics
     Martin V. Zombeck | Cambridge University Press, Published in 2006, 780 pages
140. Spherical Astronomy
     F. Brünnow | Van Nostrand, Published in 1865, 559 pages
141. Applied Cosmography: A Pedagogical Review
     Yu. L. Bolotin, et al. | arXiv.org, Published in 2018, 66 pages
142. Massive Stars and their Supernovae
     F. Thielemann, R. Hirschi, M. Liebendorfer, R. Diehl | arXiv, Published in 2010, 81 pages
143. Archaeology, Anthropology, and Interstellar Communication
     Douglas A. Vakoch | NASA, Published in 2014, 330 pages
144. From Chaos to Consciousness: A Brief History of the Universe
     Mike Corwin | Bookboon, Published in 2015, 166 pages
145. Modified Gravity and Cosmology
     T. Clifton, P.G. Ferreira, A. Padilla, C. Skordis | arXiv, Published in 2012, 312 pages
146. Stellar Superfluids
     Dany Page, et al. | arXiv, Published in 2013, 88 pages
147. Everything You Always Wanted To Know About The Cosmological Constant Problem
     Jerome Martin | arXiv, Published in 2012, 89 pages
148. Images of the Solar Upper Atmosphere From SUMER on SOHO
     Uri Feldman, at al. | ESA Publications Division, Published in 2003, 209 pages
149. Dense Matter in Compact Stars
     Andreas Schmitt | arXiv, Published in 2010, 146 pages
150. An Introduction to the Theory of Rotating Relativistic Stars
     Eric Gourgoulhon | arXiv, Published in 2010, 88 pages
151. Mechanism of the Heavens
     Mary Somerville | J. Murray, Published in 1831, 710 pages
152. Telescopic Work for Starlight Evenings
     William F. Denning | Taylor and Francis, Published in 1891, 372 pages
153. Short History of Astronomy
     Arthur Berry | John Murray, Published in 1898, 439 pages
154. Basaltic Volcanism on the Terrestrial Planets
     | Pergamon Press, Published in 1981, 1286 pages
155. Astronomical Discovery
     Herbert Hall Turner | E. Arnold, Published in 1904, 225 pages
156. History of Astronomy
     George Forbes | , Published in 1909
157. High Performance Computing and Numerical Modelling
     Volker Springel | arXiv, Published in 2014, 108 pages
158. A Primer for Black Hole Quantum Physics
     R. Brout, S. Massar, R. Parentani, P. Spindel | arXiv, Published in 2007, 178 pages
159. Practical Astronomy for Engineers
     Frederick Hanley Seares | Stephens, Published in 1909, 160 pages
160. A Review of the Universe: Structures, Evolutions, Observations, and Theories
     | universe-review.ca, Published in 2009
161. Exoplanet Observing for Amateurs
     Bruce L. Gary | Reductionist Publications, Published in 2007, 170 pages
162. Elements of Astrophysics
     Nick Kaiser | University of Hawaii, Published in 2002, 435 pages
163. Elementary Astronomy
     James N. Pierce | , Published in 2013, 134 pages
164. Hubble 25: A Quarter-Century of Discovery with the Hubble Space Telescope
     Dylan Steele (ed.) | NASA, Published in 2015, 78 pages
165. From Cosmic Birth to Living Earths: The Future of UVOIR Space Astronomy
     Julianne Dalcanton, et al. | arXiv, Published in 2015, 176 pages
166. Introduction to Dark Matter Experiments
     R. W. Schnee | arXiv.org, Published in 2011, 64 pages
167. Advances in Modern Cosmology
     Adnan Ghribi | InTech, Published in 2011, 198 pages
168. Voyager 1 Encounters Saturn
     | NASA, Published in 1980, 51 pages
169. Voyage to Jupiter
     David Morrison, Jane Samz | NASA, Published in 1980, 218 pages
170. An introductory treatise on the lunar theory
     Ernest W Brown | Cambridge University Press, Published in 1896, 312 pages
171. Dynamics of the Universe in Problems
     Yu. L. Bolotin, et al. | UniverseInProblems.com, Published in 2013, 113 pages
172. Advances in Global and Local Helioseismology: an Introductory Review
     Alexander G. Kosovichev | arXiv, Published in 2011, 86 pages
173. Inflation
     Marieke Postma | NIKHEF, Published in 2009, 53 pages
174. The world according to the Hubble Space Telescope
     Mario Livio | arXiv.org, Published in 2008, 112 pages
175. Evolution of the Solar System
     Hannes Alfven, Gustaf Arrhenius | NASA, Published in 1976, 583 pages
176. A Photographic Atlas of Rock Breakdown Features in Geomorphic Environments
     Mary Bourke, Heather Viles | Planetary Science Institute, Published in 2007, 88 pages
177. The Foundations of Celestial Mechanics
     George W. Collins, II | Pachart Pub House, Published in 2004, 145 pages
178. An Introduction to Cosmic Rays and Gamma-Ray Bursts
     A. De Rujula | arXiv, Published in 2007, 37 pages
179. Protostars and Planets
     | Rice University, Published in 2015, 422 pages
180. Vision and Voyages for Planetary Science in the Decade 2013-2022
     | National Academy of Sciences, Published in 2011, 410 pages
181. Astronomy of To-day
     Cecil Goodrich Julius Dolmage | Seeley and co., Published in 1910
182. Techniques of Radio Astronomy
     T. L. Wilson | arXiv, Published in 2011, 47 pages
183. Voyager Encounters Jupiter
     | National Aeronautics and Space Administration, Published in 1979, 48 pages
184. The Story of Eclipses
     George F. Chambers | S. S. McClure Co., Published in 1909, 208 pages
185. Atlas of Peculiar Galaxies
     Halton C. Arp | California Institute of Technology, Published in 1966, 190 pages
186. First Light
     Abraham Loeb | arXiv, Published in 2006, 157 pages
187. Searching for Life Across Space and Time
     | The National Academies Press, Published in 2017, 133 pages
188. Gravitational Waves: Sources, Detectors and Searches
     Keith Riles | arXiv, Published in 2012, 79 pages
189. The Birth and Death of Stars
     James Schombert | University of Oregon, Published in 2008, 324 pages
190. Frequently Asked Questions about Calendars
     Claus Tøndering | , Published in 2008, 65 pages
191. Lunar Orbiter Photographic Atlas of the Moon
     D.E. Hughes, J.K. Bowker | Lunar and Planetary Institute, Published in 1971
192. The Complete Idiot's Guide to The Sun
     Jay M. Pasachoff | Alpha, Published in 2003, 350 pages
193. The Search for Extraterrestrial Intelligence, SETI
     Philip Morrison, John Billingham, John Wolfe | NASA, Published in 1979, 293 pages
194. The Elements of Theoretical and Descriptive Astronomy
     Charles J. White | J. Wiley, Published in 1909, 322 pages
195. Particle Physics and Inflationary Cosmology
     Andrei Linde | arXiv, Published in 2005, 270 pages
196. The Beginning and Evolution of the Universe
     Bharat Ratra, Michael S. Vogeley | arXiv, Published in 2008, 69 pages
197. Lunar Stratigraphy and Sedimentology
     John Lindsay | Elsevier, Published in 1976, 311 pages
198. Introduction to Early Universe Cosmology
     Robert H. Brandenberger | arXiv, Published in 2011, 70 pages
199. The Astrobiology Primer: An Outline of General Knowledge
     Lucas J. Mix, at al. | arXiv, Published in 2006, 79 pages
200. Photographs of Nebulae and Clusters
     James Edward Keeler | University of California Publications, Published in 1908
201. Resources of Near-Earth Space
     J. S. Lewis, M. S. Matthews | University of Arizona Press, Published in 1993, 977 pages
202. Cosmology
     James Schombert | University of Oregon, Published in 2008, 123 pages
203. The Fundamentals of Stellar Astrophysics
     George W. Collins, II | W H Freeman & Co, Published in 2003, 494 pages
204. Primordial Magnetogenesis
     Alejandra Kandus, Kerstin E. Kunze, Christos G. Tsagas | arXiv, Published in 2011, 107 pages
205. Why CMB physics?
     Massimo Giovannini | arXiv, Published in 2007, 179 pages
206. Pioneers of Science
     Oliver Lodge | Macmillan and co, Published in 1905, 421 pages
207. Cosmic Rays and the Search for a Lorentz Invariance Violation
     Wolfgang Bietenholz | arXiv, Published in 2008, 81 pages
208. Cosmology and Astrophysics
     Juan Garcia-Bellido | arXiv.org, Published in 2005, 76 pages
209. Large Scale Structure of the Universe
     Alison L. Coil | arXiv, Published in 2012, 43 pages
210. The Geology of the Terrestrial Planets
     Michael H. Carr | NASA, Published in 1984, 322 pages
211. Cosmic Rays in Galactic and Extragalactic Magnetic Fields
     F. Aharonian, A. Bykov, E. Parizot, V. Ptuskin, A. Watson | arXiv, Published in 2011, 43 pages
212. Stellar Atmospheres
     J. B. Tatum | , Published in 2006, 302 pages
213. Cosmology for Particle Physicists
     U. A. Yajnik | arXiv, Published in 2008, 63 pages
214. Cosmological Evolution of Galaxies
     Isaac Shlosman | arXiv, Published in 2012, 88 pages
215. Astronomy for Amateurs
     Camille Flammarion | D. Appleton and Company, Published in 1910
216. Sky Surveys
     S. G. Djorgovski, A.A. Mahabal, A.J. Drake, M.J. Graham, C. Donalek | arXiv, Published in 2012, 62 pages
217. The Galactic Habitable Zone I. Galactic Chemical Evolution
     G. Gonzalez, D. Brownlee, P. Ward | arXiv, Published in 2001, 57 pages
218. Guidebook to the Geology of Barringer Meteorite Crater, Arizona
     David A. Kring | Lunar and Planetary Institute, Published in 2007, 154 pages
219. Dwarf-Galaxy Cosmology
     Regina Schulte-Ladbeck, at al. | Hindawi Publishing, Published in 2010, 238 pages
220. Celestial Mechanics
     J. B. Tatum | , Published in 2008, 244 pages
221. Cosmology: Mankind's Grand Investigation
     Greg Bothun | Harcourt Brace College Publishers, Published in 1999, 129 pages
222. Observatories in Space
     Catherine Turon | arXiv, Published in 2011, 50 pages
223. Lecture Notes on High Energy Cosmic Rays
     M. Kachelriess | arXiv.org, Published in 2008, 82 pages
224. Planetary Photometry
     Max Fairbairn | , Published in 2005, 142 pages
225. Observing the Sky from 40N
     Roberto Mura | Wikibooks, Published in 2010, 86 pages
226. Lopsided Spiral Galaxies
     Chanda J. Jog, Francoise Combes | arXiv, Published in 2008, 75 pages
227. An Introduction into the Theory of Cosmological Structure Formation
     Christian Knobel | arXiv, Published in 2012, 102 pages
228. The Cosmological Constant
     Sean M. Carroll | arXiv, Published in 2000, 50 pages
229. When Biospheres Collide: A History of NASA's Planetary Protection Programs
     Michael Meltzer | NASA, Published in 2011, 542 pages
230. Celestial Navigation, Elementary Astronomy, Piloting
     Arturo Chiesa, Raffaele Chiesa | Sky and Sea Software, Published in 2010
231. A practical guide to Basic Statistical Techniques for Data Analysis in Cosmology
     Licia Verde | arXiv, Published in 2008, 52 pages