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