The Great Bear 50,000 Years Hence 109 Constellation of Orion as it Appears Now 110 Constellation of Orion 50,000 Years Hence 111 Position of Planets Inferior to Jupiter--Showing the Zone of the Asteroids 123 Comparative Size of the Planetary Worlds 130 A Typical Sun-spot 135 A Solar Eruption 138 Sun-flames, May 3, 1892 143 Solar Corona and Prominence 152 Comparative Size of the Earth and Sun 155 The Moon--an Expired Planet 159 The Lunar Crater Copernicus 170 Lunar Eruption--Brisk Action 172 Lunar Eruption--Feeble Action 173 Nicolaus Copernicus 176 Phases of Venus 186 Mars and the Path of its Satellites 191 General Aspect of Jupiter--Satellite and its Shadow 200 Satellites of Jupiter Compared with the Earth and Moon 206 The System of Jupiter 208 Orbits of Nine Comets Captured by Jupiter 213 Saturn and the Earth--Comparative Size 215 Ideal View of Saturn’s Rings and Satellites from the Planet 222 Great Astronomers of Earlier Times 227 The Great Comet of 1811 247 Donati’s Comet, 1858 249 Great Comet of 1744 254 The First Comet of 1888--June 4 255 Great Comet of 1680 260 Great Comet of 1769 261 Baron Alexander Von Humboldt 264 A Telescopic Field in the Milky Way 270 Cygnus, Constellation of 279 Stars whose Distances are Best Known 281 Lyra, Constellation of 297 Constellations in the Northern Hemisphere 300 A Cluster of Stars in Centaurus 305 The Great Nebula in Andromeda, Compared with Size of the Solar System 307 A Cluster of Stars in Perseus 332