| Preface 1 Introducing the universe 1．1 Cosmic inventory 1．2 The great questions 2 Matter．radiation and forces 2．1 A microscopic tour 2．2 Forces of nature 2．3 Building blocks of matter 2．4 Radiation：packets of light 2．5 Interaction of matter and light 3 Observing the universe 3．1 The cosmic rainboW 3．2 Seeing is believing 3．3 Heat in the sky 3．4 Music of the heavens 3．5 The cosmic tan 3．6 X-raying the universe 3．7 Gamma—ray astronomy 4 Getting to know the universe 4．1 Stars：Nature’S nuclear plants 4．2 Story of a star 4．3 Supernovae：the violent end 4．4 Neutron stars and pulsars 4．5 Black holes 4．6 Galaxies 4．7 The Milky Way——our home 4．8 Groups and clusters of galaxies 5 The expanding universe 5．1 Expansion of the universe 5．2 The universe has a past! 5．3 Dark matter：weight without light 5．4 The very early universe 5．5 The quantum universe：science of genesis …… |
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