| FIG. |
PAGE |
| |
The moon |
Frontispiece |
| 1. |
The celestial sphere |
5 |
| 2. |
The daily paths of circumpolar stars |
To face p. 8 |
| 3. |
The circles of the celestial sphere |
9 |
| 4. |
The equator and the ecliptic |
11 |
| 5. |
The Great Bear |
To face p. 12 |
| 6. |
The apparent path of Jupiter |
16 |
| 7. |
The apparent path of Mercury |
17 |
| 8-11. |
The phases of the moon |
30, 31 |
| 12. |
The curvature of the earth |
32 |
| 13. |
The method of Aristarchus for comparing the distances of
the sun and moon |
34 |
| 14. |
The equator and the ecliptic |
36 |
| 15. |
The equator, the horizon, and the meridian |
38 |
| 16. |
The measurement of the earth |
39 |
| 17. |
The eccentric |
44 |
| 18. |
The position of the sun’s apogee |
45 |
| 19. |
The epicycle and the deferent |
47 |
| 20. |
The eclipse method of connecting the distances of the sun
and moon |
50 |
| 21. |
The increase of the longitude of a star |
52 |
| 22. |
The movement of the equator |
53 |
| 23, |
24. The precession of the equinoxes |
53, 54 |
| 25. |
The earth’s shadow |
57 |
| 26. |
The ecliptic and the moon’s path |
57 |
| 27. |
The sun and moon |
58 |
| 28. |
Partial eclipse of the moon |
58 |
| 29. |
Total eclipse of the moon |
58 |
| 30. |
Annular eclipse of the sun |
59 |
| 31. |
Parallax |
60 |
| 32. |
Refraction by the atmosphere |
63
|
| 33. |
Parallax |
68 |
| 34. |
Jupiter’s epicycle and deferent |
70 |
| 35. |
The equant |
71 |
| 36. |
The celestial spheres |
89 |
| |
Portrait of Coppernicus |
To face p. 94 |
| 37. |
Relative motion |
102 |
| 38. |
The relative motion of the sun and moon |
103 |
| 39. |
The daily rotation of the earth |
104 |
| 40. |
The solar system according to Coppernicus |
107 |
| 41, |
42. Coppernican explanation of the seasons |
108, 109 |
| 43. |
The orbits of Venus and of the earth |
113 |
| 44. |
The synodic and sidereal periods of Venus |
114 |
| 45. |
The epicycle of Jupiter |
116 |
| 46. |
The relative sizes of the orbits of the earth and of a superior
planet |
117 |
| 47. |
The stationary points of Mercury |
119 |
| 48. |
The stationary points of Jupiter |
120 |
| 49. |
The alteration in a planet’s apparent position due to an
alteration in the earth’s distance from the sun |
122 |
| 50. |
Stellar parallax |
124 |
| 51. |
Uraniborg |
133 |
| 52. |
Tycho’s system of the world |
137 |
| |
Portrait of Tycho Brahe |
To face p. 139 |
| 53. |
One of Galilei’s drawings of the moon |
To face p. 150 |
| 54. |
Jupiter and its satellites as seen on January 7, 1610 |
152 |
| 55. |
Sun-spots |
To face p. 154 |
| 56. |
Galilei’s proof that sun-spots are not planets |
156 |
| 57. |
The differential method of parallax |
165 |
|
Portrait of Galilei |
To face p. 171 |
| 58. |
The daily libration of the moon |
173 |
|
Portrait of Kepler |
To face p. 183 |
| 59. |
An ellipse |
185 |
| 60. |
Kepler’s second law |
186 |
| 61. |
Diagram used by Kepler to establish his laws of planetary
motion |
187 |
| 62. |
The “music of the spheres” according to Kepler |
190 |
| 63. |
Kepler’s idea of gravity |
196 |
| 64. |
Saturn’s ring, as drawn by Huygens |
To face p. 200
|
| 65. |
Saturn, with the ring seen edge-wise |
To face p. 200 |
| 66. |
The phases of Saturn’s ring |
201 |
| 67. |
Early drawings of Saturn |
To face p. 202 |
| 68. |
Mars in opposition |
206 |
| 69. |
The parallax of a planet |
206 |
| 70. |
Motion in a circle |
214 |
| 71. |
The moon as a projectile |
220 |
| 72. |
The spheroidal form of the earth |
234 |
| 73. |
An elongated ellipse and a parabola |
238 |
|
Portrait of Newton |
To face p. 240 |
|
Portrait of Bradley |
To face p. 258 |
| 74. 75. |
The aberration of light |
262, 263 |
| 76. |
The aberrational ellipse |
264 |
| 77. |
Precession and nutation |
268 |
| 78. |
The varying curvature of the earth |
277 |
| 79. |
Tobias Mayer’s map of the moon |
To face p. 282 |
| 80. |
The path of Halley’s comet |
294 |
| 81. |
A varying ellipse |
303 |
|
Portrait of Lagrange |
To face p. 305 |
|
Portrait of Laplace |
To face p. 307 |
|
Portrait of William Herschel |
To face p. 327 |
| 82. |
Herschel’s forty-foot telescope |
329 |
| 83. |
Section of the sidereal system |
333 |
| 84. |
Illustrating the effect of the sun’s motion in space |
345 |
| 85. |
61 Cygni and the two neighbouring stars used by Bessel |
360 |
| 86. |
The parallax of 61 Cygni |
361 |
| 87. |
The path of Halley’s comet |
373 |
| 88. |
Photographic trail of a minor planet |
To face p. 377 |
| 89. |
Paths of minor planets |
378 |
| 90. |
Comparative sizes of three minor planets and the moon |
379 |
| 91. |
Saturn and its system |
380 |
| 92. |
Mars and its satellites |
381 |
| 93. |
Jupiter and its satellites |
382 |
| 94. |
The Apennines and the adjoining regions
of the moon |
To face p. 383 |
| 95. |
Saturn and its rings |
To face p. 384 |
| 96. |
A group of sun-spots |
To face p. 385 |
| 97. |
Fraunhofer’s map of the solar spectrum |
To face p. 387 |
| 98. |
The total solar eclipse of 1886 |
To face p. 390 |
| 99. |
The great comet of 1882 |
To face p. 393 |
| 100. |
The nebula about η Argus |
To face p. 397 |
| 101. |
The orbit of ξ Ursae |
399 |
| 102. |
Spiral nebulae |
To face p. 400 |
| 103. |
The spectrum of β Aurigae |
To face p. 403 |
| 104. |
The Milky Way near the cluster in Perseus |
To face p. 405 |