Page:Astronomy for Everybody.djvu/19

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CONTENTS
xi

PAGE

Encke's comet 264

Capture of comets by Jupiter 265

Whence come comets? 266

Brilliant comets of our time 267

Nature of comets 274

II. Meteoric Bodies 277

Meteors 277

Cause of meteors 278

Meteoric showers 279

Connection of comets and meteors 281

The zodiacal light 283

The impulsion of light 286

PART VI. THE FIXED STARS

I. General Review 291

Stars and nebulæ 293

Spectra of the stars 293

Density and heat of the stars 296

II. Aspect of the Sky 299

The Milky Way 299

Brightness of the stars 300

Number of stars 301

Colours 303

Collection into constellations 303

III. Description of the Constellations 305

To find the sidereal time 306

The northern constellations 307

The autumnal constellations 309

The winter constellations 313

The spring constellations 316

The summer constellations 317

IV. The Distances of the Stars 321

V. The Motions op the Stars 325

VI. Variable and Compound Stars 329

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