Contents
PREFACE 11
PART I. STARS, PLANETS, AND LIFE 15
1 THE SIZE AND SCALE OF THE UNIVERSE 17
Neil deGrasse Tyson
2 FROM THE DAY AND NIGHT SKY TO PLANETARY ORBITS 26
Neil deGrasse Tyson
3 NEWTON'S LAWS 42
Michael A. Strauss
4 HOW STARS RADIATE ENERGY (I) 54
Neil deGrasse Tyson
5 HOW STARS RADIATE ENERGY (II) 71
Neil deGrasse Tyson
6 STELLAR SPECTRA 81
Neil deGrasse Tyson
7 THE LIVES AND DEATHS OF STARS ( I) 93
Neil deGrasse Tyson
8 THE LIVES AND DEATHS OF STARS (II) 111
Michael A. Strauss
9 WHY PLUTO IS NOT A PLANET 126
Neil deGrasse Tyson
10 THE SEARCH FOR LIFE IN THE GALAXY 146
Neil deGrasse Tyson
PART II. GALAXIES 171
11 THE INTERSTELLAR MEDIUM 173
Michael A. Strauss
12 OUR MILKY WAY 183
Michael A. Strauss
13 THE UNIVERSE OF GALAXIES 197
Michael A. Strauss
14 THE EXPANSION OF THE UNIVERSE 207
Michael A. Strauss
15 THE EARLY UNIVERSE 222
Michael A. Strauss
16 QUASARS AND SUPER MASSIVE BLACK HOLES 241
Michael A. Strauss
PART Ill. EINSTEIN AND THE UNIVERSE 255
17 EINSTEIN 'S ROAD TO RELATIVITY
J. Richard Gott
18 IMPLICATIONS OF SPECIAL RELATIVITY 270
J. Richard Gott
19 EINSTEIN'S GENERAL THEORY OF RELATIVITY 289
J. Richard Gott
20 BLACK HOLES 300
J. Richard Gott
21 COSMIC STRINGS, WORMHOLES, AND TIME TRAVEL 321
J. Richard Gott
22 THE SHAPE OF THE UNIVERSE AND THE BIG BANG 347
J. Richard Gott
23 INFLATION AND RECENT DEVELOPMENTS IN COSMOLOGY 374
J. Richard Gott
24 OUR FUTURE IN THE UNIVERSE 400
J. Richard Gott
ACKNOWLEDGMENTS 425
APPEND IX 1
Derivation of E = mc2 427
APPENDIX 2
Bekenstein, Entropy of Black Holes, and Information 431
NOTES 433
SUGGESTED READING 439
INDEX 441