Note: Intro -- Avant-propos -- Jean-René Roy -- Présentation -- Georges Lemaître -- I -- LA GRANDEUR DE L'ESPACE -- Georges Lemaître -- Où sommes-nous ? -- Jean-René Roy -- II -- L'EXPANSION -- Georges Lemaître -- Suites pour un univers en expansion -- Jean-René Roy -- III -- L'ÉVOLUTION -- Georges Lemaître -- Le casse-tête des âges cosmiques -- Jean-René Roy -- IV -- HYPOTHÈSES COSMOGONIQUES -- Georges Lemaître -- Sur la genèse des mondes -- Jean-René Roy -- V -- L'HYPOTHÈSE DE L'ATOME PRIMITIF -- Georges Lemaître -- De l'atome primitif au super-neutron -- Jean-René Roy -- Postface -- La réception de l'hypothèse de l'atome primitif -- Jean-René Roy -- Lexique de quelques termes physiques et astronomiques -- Jean-René Roy -- Bibliographie d'ouvrages choisis -- Jean-René Roy -- Index -- _GoBack.

Note: Cover -- Half-title -- Title -- Copyright -- Contents -- Preface -- Acknowledgments -- Units and numbers -- Notations -- Stars -- 1 Why do stars shine? -- 2 What are stars made of? -- 3 Why are stars round? -- 4 How many stars are there in the Galaxy? -- 5 How are the luminosities of stars measured? -- 6 How are the distances to stars measured? -- 7 Parsecs? Light-years? Why not miles or kilometers? -- 8 How are the masses of stars determined? -- 9 How big are the stars? -- 10 How big do stars get? -- 11 How old are the stars? -- 12 How old is the oldest star? -- 13 Do stars really come in different colors? -- 14 How many different kinds of star are there? -- 15 How do stars die? -- 16 What is a nova? A supernova? -- 17 What is a double star? -- 18 What are the Cepheids? -- 19 What is a pulsar? -- 20 Do stars ever collide? -- 21 Are we really made of stardust? -- 22 Do all civilizations recognize the same constellations? -- 23 How many constellations are there? -- 24 How are stars named? -- 25 Can we still discover and name stars? -- 26 Is there a southern polar star? -- 27 How many stars are visible to the naked eye? -- 28 Are the stars fixed or do they move? -- 29 Which star is closest to us? -- 30 Between stars that die and stars that are born, is the population of our galaxy growing or shrinking? -- 31 Are there any isolated stars, outside of the galaxies? -- 32 Could nuclear fusion, the process that fuels the stars, be tamed to solve our energy problems? -- The Solar System -- 33 How did the Solar System form? -- 34 Is any trace of our "ancestral'' supernova still in existence? -- 35 How far out does our solar system extend? -- 36 How old is the Sun? -- 37 Has the Sun always been as bright as it is now? -- 38 What is our Sun's future? -- 39 What will happen to the Earth when the Sun dies? -- 40 How hot is the Sun? -- 41 What causes sunspots?. , 42 Do sunspots influence the weather on Earth? -- 43 How was the distance to the Sun measured? -- 44 Is the distance between Earth and the Sun changing? -- 45 How can we know the mass of the Sun? -- 46 What is solar radiation pressure? -- 47 What is the solar wind? -- 48 How long does light from the Sun take to reach us? -- 49 What is the difference between a star and a planet? -- 50 What is a brown dwarf? -- 51 Why are some planets rocky and others gaseous? -- 52 What are the interiors of planets and satellites like? -- 53 Where do the names of the planets come from? -- 54 What is Bode's law? -- 55 What is Planet X? -- 56 Why is Pluto no longer a planet? -- 57 Why do some planets have many satellites and others, none? -- 58 How can Mercury survive so close to the Sun? -- 59 Why does Venus have phases like the Moon? -- 60 What is the Great Red Spot on Jupiter? -- 61 What are Saturn's rings made of? -- 62 Do all the planets orbit in the same direction? -- 63 What are the Lagrangian points? -- 64 Why did the comet Shoemaker-Levy 9 break up as it approached Jupiter? -- 65 Can planetary alignments cause catastrophic events on Earth? -- 66 Did asteroids cause the mass extinctions on Earth? -- 67 Where did the asteroid implicated in the extinction of the dinosaurs fall? -- 68 What could be done if an asteroid threatened to collide with Earth? -- 69 What is the Kuiper Belt? -- 70 Where do comets come from? -- 71 How big are comets? -- 72 What is a comet's tail made of? -- 73 In the age of space probes, is it still useful to observe the planets with telescopes? -- 74 What do the Mars rovers do? -- 75 Why colonize Mars? -- 76 Which way to Mars? -- 77 What is solar sailing? -- 78 How could the Voyagers explore so many planets and satellites in one trip? -- The Earth -- 79 How was the size of the Earth measured? -- 80 How was the mass of the Earth measured?. , 81 How old is the Earth? -- 82 What is inside the Earth? -- 83 Where did the water on Earth come from? -- 84 Do any of the other planets have oceans? -- 85 Where does the oxygen of our atmosphere come from? -- 86 What causes the seasons? -- 87 What is the precession of equinoxes? -- 88 What caused the "ice ages'' on Earth? -- 89 What causes the Earth's magnetic field? -- 90 Does the Earth's magnetism affect people? -- 91 Why is the magnetic north different from the geographic north? -- 92 What is the greenhouse effect? -- 93 Have days on Earth always been the same length? -- 94 What is sidereal time? -- 95 Why is the day divided into 24 hours? -- 96 How do sundials work? -- 97 How can the Sun be used to find directions? -- 98 How was the time zone system established? -- The Moon -- 99 How did the Moon form? -- 100 Why is the Moon covered with craters? -- 101 What are the large dark areas on the Moon? -- 102 What does the far side of the Moon look like? -- 103 Does the Moon have the same composition an Earth? -- 104 Why does the Moon lack an atmosphere? -- 105 Why does the Moon always present the same face to Earth? -- 106 Why does the Moon, rather than the Sun, cause most of our tides? -- 107 If the tide is mainly caused by the attraction of the Moon, why is there a simultaneous high tide on the Earth's opposite side, facing away from the Moon? -- 108 Is it just coincidence that the apparent diameters of the Moon and the Sun are the same? -- 109 How often do solar eclipses occur? -- 110 How can one tell if the Moon is waning or waxing? -- 111 What has been learned from our exploration of the Moon? -- 112 How useful would it be to return to the Moon? -- 113 What explains the dim light suffusing the dark portion of a crescent Moon? -- 114 Has the Hubble Space Telescope been used to observe the Moon?. , 115 "Moonstruck!'' Does the Moon have an influence on human behavior? -- Celestial phenomena -- 116 What is a shooting star? -- 117 What causes meteor showers? -- 118 What causes the "northern lights?'' -- 119 What is zodiacal light? -- 120 What causes the bright beams of light, like searchlights, that stream out from the setting Sun? -- 121 Why is the setting Sun red? -- 122 Why are sunsets usually more colorful than sunrises? -- 123 What is the green flash? -- 124 Why do we never tan in the late afternoon, even though the Sun's rays still feel hot? -- 125 Why do stars twinkle? -- 126 Why does the Moon look so large at the horizon? -- The Universe -- 127 How old is the Universe? -- 128 How did the Universe begin? -- 129 How do we know that the Universe is expanding? -- 130 How fast is the Universe expanding? -- 131 Who invented the term "Big Bang?'' -- 132 Does the Universe have a center? -- 133 What is the cosmic background radiation? -- 134 What is cosmic inflation? -- 135 When did the first stars form? -- 136 How did the first galaxies form? -- 137 Which came first, stars or galaxies? -- 138 What was there before the Big Bang? -- 139 What is string theory? -- 140 If the Universe is expanding, are we also expanding? -- 141 What explains the redshift of light? -- 142 How big is the Universe? -- 143 Does the Universe have boundaries? -- 144 What is the nature of gravity? -- 145 What is a black hole? -- 146 Can anything escape from a black hole? -- 147 What is dark energy? -- 148 If we cannot see dark matter, how do we know that it exists? -- 149 Were the laws of physics the same in the early Universe as they are now? -- 150 How much antimatter is there in the Universe? -- 151 How many galaxies are there in the Universe? -- 152 How many different types of galaxy are there? -- 153 What is the Milky Way? -- 154 What type of galaxy is the Milky Way?. , 155 What are the Magellanic Clouds? -- 156 How does the sky appear in different wavelengths? -- 157 What is a nebula? -- 158 How empty is space? -- 159 How did the theory of relativity affect astronomy? -- 160 What is meant by "four-dimensional space?'' -- 161 Can anything go faster than the speed of light? -- 162 Why does everything in the Universe rotate? -- 163 Why is the night sky dark? -- 164 What is the anthropic principle? -- 165 What is the fate of the Universe? -- 166 What major questions remain to be answered in astronomy? -- 167 How can we hope to comprehend the astronomical numbers which astronomy confronts us with? -- 168 Is there a difference between the cosmos and the Universe? -- Life in the Universe -- 169 What is life? -- 170 How did life begin on Earth? -- 171 Does life violate the second law of thermodynamics? -- 172 Could intelligent life reverse the fate of the Universe? -- 173 Could life on Earth have originated in outer space? -- 174 Why is water so important for life? -- 175 Could life evolve based on a chemical element other than carbon? -- 176 What are extremophiles? -- 177 Given favorable conditions, will life inevitably appear? -- 178 Where in the Universe would life have the best chance of appearing? -- 179 Can planets exist around binary stars? -- 180 What are the odds that other intelligent life exists in our galaxy? -- 181 Where else in the Solar System could life exist? -- 182 How are exoplanets detected? -- 183 How could we detect the presence of life outside the Solar System? -- 184 Could the human race ever colonize exoplanets? -- 185 Could aliens have visited the Earth? -- 186 How could we communicate with others in the Galaxy? -- History of astronomy -- 187 Why did ancient astronomers study the sky so intently? -- 188 How did the cult of the Sun originate?. , 189 Why were the Greek and Roman gods associated with the different planets?.

Note: Intro -- L'ASTRONOMIE ET SON HISTOIRE -- Préface -- Table des matières -- Avant-propos -- Partie 1_La Terre et l'univers: De la préhistoire à Albert Einstein -- Chapitre 1_La Terre, Un observatoire en mouvement -- Chapitre 2_L'astronomie primitive: L'apprentissage des astres -- Chapitre 3_L'astronomie dans l'antiquité et au moyen âge: L'époque des géomètres -- Chapitre 4_L'héliocentrisme: L'élatement de l'univers médiéval -- Chapitre 5_L'unification de la physique terrestre et céleste par la gravitation -- Chapitre 6_L'avénement de l'astrophysique et de la relativité -- Partie 2_L'exploration de l'univers: Les étoiles, les galaxies, le système solaire -- Chapitre 7_Matière et énergie dans l'univers -- Chapitre 8_Les outils d'observation de l'astronomie -- Chapitre 9_L'observation des étoiles -- Chapitre 10_Le diagramme de Hertzsprung-Russell (HR), pierre de rosette des cieux -- Chapitre 11_Génération d'énergie dans les étoiles et synthèse des atomes -- Chapitre 12_Naissance, vie et mort des étoiles -- Chapitre 13_Les phases finales de l'évolution stellaire -- Chapitre 14_La voie lactée, notre galaxie -- Chapitre 15_Les galaxies et l'architecture de l'univers -- Chapitre 16_La cosmologie -- Chapitre 17_Notre étoile, le soleil, et son activité -- Chapitre 18_Les planètes et le menu fretin du système solaire -- Chapitre 19_Les planètes terrestres -- Chapitre 20_Les planètes joviennes -- Chapitre 21_La vie dans l'univers -- Appendices -- Appendice 1_Constantes fondamentales de la nature -- Appendice 2_Systèmes de coordonnées astronomiques -- Appendice 3_Les constellations -- Appendice 4_Détermination des distances en astronomie -- Appendice 5_Le groupe local de galaxies -- Appendice 6_Fluctuations apparentes de l'activité solaire -- Appendice 7_L'observatoire de Paris -- Lectures suggérées -- Index alphabétique. , Légendes des photographies en début de chapitre -- Sources des illustrations -- Symboles, abréviations et unités.

Note: Couverture avant -- Table des matières -- Avant-propos -- Chapitre 1 - Tout droit à la Grande Ourse -- Rue McClure, Acton Vale -- Fernand Seguin et mentors -- La voûte étoilée -- Petite histoire du ciel -- Les feux dansants du ciel -- Vers l'Hydre -- Chapitre 2 - Par les chemins de la Voie lactée -- Un pensionnaire en cage -- L'Abbé Moreux -- La Voie lactée -- Le moment Spoutnik -- L'Année géophysique internationale -- Le cours classique à l'ère spatiale -- Chapitre 3 - Les anneaux de Saturne -- De la dissertation -- Teilhard de Chardin, nouvelles théologies -- De retour aux étoiles -- Sur l'Indochine et Galilée -- Galilée et Darwin -- Saturne et les premières observations au télescope -- Chapitre 4 - Coup de foudre galactique -- Les insolences du Frère Untel -- Le collège classique des années 1960 -- La crise des missiles de Cuba -- La découverte des galaxies -- L'âge de l'univers -- La course à la Lune -- Vulgarisateur en herbe -- Chapitre 5 - Histoires de Terre -- Plein cap sur la physique et le russe -- « 1968 » -- Les « sorties » d'Alexis Leonov et d'Ed White -- Vénus, sous Aphrodite et Lucifer -- Vénus, étrange jumelle -- SOQUEM -- Andésite-rhyolite -- Les roches les plus anciennes de la Terre -- Expo 67 -- Henri Tranquille -- Maryvonne Kendergi -- Chapitre 6 - Par lunes et par vents -- Emporté par un télescope -- London sur la Tamise ontarienne -- Apollo et la Lune -- Une chaude nuit lunaire -- Souffleries d'étoiles -- OTAN, lunes et planètes -- Bède le Vénérable -- Chapitre 7 - Soleil, mesas et canyons -- La Terre extraterrestre -- Invitation -- Le Soleil, une étoile pas si ordinaire -- Boucles coronales -- Geysers magnétiques -- Petite histoire de l'activité solaire -- Par monts et canyons -- Une horloge radioactive -- Chapitre 8 - Le Soleil X et l'alchimie des étoiles -- Germaine Greer versus le pape -- Montagnes et télescopes. , Hale, entrepreneur des étoiles -- Caltech -- Rayons X solaires -- Literati ou Frankenstein -- Sous les ailes de mentors -- La genèse des éléments -- Chapitre 9 - Intermède russe : un innocent à Moscou -- Invitation à Moscou -- La dissidence en Union soviétique -- Préparatifs et arrivée à Moscou -- Ma rencontre avec les Voronel -- Les presses samizdat -- À l'intérieur du Kremlin -- Un dimanche à Moscou -- Retour -- La suite -- Chapitre 10 - « Luctor et Emergo » -- Solar Max -- De simples alluvions -- Baruch Spinoza, opticien -- Christiaan Huygens, génie -- À vélo sous des cieux hollandais -- La montée des eaux -- L'eau sur Terre et dans l'univers -- Le ciel des mégalithes -- Chapitre 11 - Le ciel nous tombe sur la tête -- Hadrosaure -- Le Pic et l'imagerie électronique -- Les astéroïdes -- La fin des dinosaures -- Iridium -- Astroblèmes -- Chapitre 12 - Hasards et aléas nébulaires -- Dé -- Retour au bercail -- Mouvance OMM -- Échanges France-Québec -- Nébuleuses -- Champagne nébulaire et « blowout » galactique -- L'astronomie et son histoire -- Fred Hoyle -- Chapitre 13 L'émeu céleste ou Terra australis incognita -- Terra australis incognita -- Profils de galaxies -- Utopie technologique -- Doc Hyder -- 1984 et George Orwell -- Chapitre 14 - Paris et lumières -- Paris -- Chostakovitch -- Srebenica -- W.G. Sebald -- Émilie du Châtelet et les Principia -- Institutionnalisation de la recherche -- Kiel, une histoire de bière et de mélange -- Munich, Dachau et Prométhée -- Le rasoir d'Occam -- Chapitre 15 - Papahanaumokuakea, un archipel -- Natsumé Sôseki -- Le Pacifique et les navigateurs polynésiens -- Hawaï -- Mauna Kea et Gemini -- Nuits hawaïennes -- Télescopes géants -- Optique adaptative -- Remonter vers la nuit des temps -- Une Asie tournée vers le ciel -- Japon -- Chapitre 16 - Folles géographies -- La comète McNaught -- Les Andes. , Des rayons gamma qui sursautent -- Le Chili, folle géographie -- Les premiers Américains -- L'astronomie en Amérique du Sud -- Exoplanètes -- Chapitre 17 - Au cœur de l'empire -- La matière sombre -- Le sentier de la guerre -- Dans les cathédrales de la mégascience -- Ça chauffe -- En orbite à Baltimore -- En « zone libre » à Johns Hopkins -- Un univers en accéléré -- Épilogue -- Bibliographie -- Encart couleurs -- Chapitre 1 - Tout droit à la Grande Ourse -- Chapitre 2 - Par les chemins de la Voie lactée -- Chapitre 3 - Les anneaux de Saturne -- Chapitre 4 - Coup de foudre galactique -- Chapitre 5 - Histoires de Terre -- Chapitre 6 - Par lunes et par vents -- Chapitre 7 - Soleil, mesas et canyons -- Chapitre 8 - Le Soleil X et l'alchimie des étoiles -- Chapitre 9 - Intermède russe : un innocent à Moscou -- Chapitre 10 - Luctor et Emergo -- Chapitre 11 L- e ciel nous tombe sur la tête -- Chapitre 12 - Hasards et aléas nébulaires -- Chapitre 13 - L'émeu céleste ou Terra australis incognita -- Chapitre 14 - Paris et lumières -- Chapitre 15 - Papahanaumokuakea, un archipel -- Chapitre 16 - Folles géographies -- Chapitre 17 - Au coeur de l'empire -- Épilogue -- Annexe -- Index -- Couverture arrière.

Note: Cover -- Half-title -- Title page -- Copyright information -- Table of contents -- Preface -- Acknowledgments -- Units and Numbers -- Notation -- The Sky Viewed from Earth -- 1 How many stars are visible to the naked eye? -- 2 How many constellations are there? -- 3 Do all civilizations recognize the same constellations? -- 4 How are stars named? -- 5 How can planets be spotted in the night sky? -- 6 Why did ancient astronomers study the sky so intently? -- 7 Why were the Greek and Roman gods associated with the different planets? -- 8 Can we learn anything from the astronomical phenomena reported in the Bible? -- 9 Who were the most important astronomers of antiquity? -- 10 What were the early contributions of the Chinese, Indian, and Islamic civilizations to astronomy? -- 11 Is there a southern polar star? -- 12 Are the stars fixed or do they move? -- 13 What causes the seasons? -- 14 What is the precession of equinoxes? -- 15 Why is the day divided into 24 hours? -- 16 Have days on Earth always been the same length? -- 17 How do sundials work? -- 18 How could the ancient astronomers predict eclipses? -- 19 How can the Sun be used to find directions? -- 20 What is sidereal time? -- 21 How was the time zone system established? -- 22 What is a shooting star? -- 23 What causes meteor showers? -- 24 What causes the bright beams of light that stream out from the setting Sun? And what causes sundogs? -- 25 Why is the setting Sun red? -- 26 Why are sunsets usually more colorful than sunrises? -- 27 What is the green flash? -- 28 Why do we never tan in the late afternoon, even though the Sun's rays still feel hot? -- 29 Why do stars twinkle? -- 30 Why does the Moon look so large at the horizon? -- 31 Astrology, astronomy, astrophysics . . . what are the differences? -- The Earth and Moon System -- 32 How has the size of the Earth been measured?. , 33 How has the mass of the Earth been measured? -- 34 How old is the Earth? -- 35 What is inside the Earth? -- 36 Where did the water on Earth come from? -- 37 Do any of the other planets have oceans? -- 38 Where does the oxygen of our atmosphere come from? -- 39 What caused the ''ice ages'' on Earth? -- 40 What causes the Earth's magnetic field? -- 41 Does the Earth's magnetism affect people? -- 42 Why is the magnetic north different from the geographic north? -- 43 What causes the ''northern lights''? -- 44 What is the greenhouse effect? -- 45 How did the Moon form? -- 46 Why is the Moon covered with craters? -- 47 What are the large dark areas on the Moon? -- 48 What does the far side of the Moon look like? -- 49 Does the Moon have the same composition as the Earth? -- 50 Why does the Moon lack an atmosphere? -- 51 Why does the Moon always present the same face to Earth? -- 52 Why does the Moon, rather than the Sun, cause most of our tides? -- 53 If the tide is mainly caused by the attraction of the Moon, why is there a simultaneous high tide on the Earth's opposite side, facing away from the Moon? -- 54 Is it just coincidence that the apparent diameters of the Moon and the Sun are the same? -- 55 How often do solar eclipses occur? -- 56 How can one tell if the Moon is waning or waxing? -- 57 What has been learned from our exploration of the Moon? -- 58 How useful would it be to return to the Moon? -- 59 What explains the dim light suffusing the dark portion of a crescent Moon? -- 60 ''Moonstruck!'' Is human behavior influenced by the Moon? -- The Sun and the Solar System -- 61 How did the solar system form? -- 62 Is any trace of our ''ancestral'' supernova still in existence? -- 63 How far out does our solar system extend? -- 64 How old is the Sun? -- 65 Has the Sun always been as bright as it is now? -- 66 What is the Sun's future?. , 67 What will happen to the Earth when the Sun dies? -- 68 How hot is the Sun? -- 69 What causes sunspots? -- 70 Do sunspots influence the weather on Earth? -- 71 Who was responsible for overturning the geocentric system? -- 72 How was the distance to the Sun measured? -- 73 Is the distance between Earth and the Sun changing? -- 74 How can we know the mass of the Sun? -- 75 What is solar radiation pressure? -- 76 What is the solar wind? -- 77 What is the difference between a star and a planet? -- 78 What is a brown dwarf? -- 79 Why are some planets rocky and others gaseous? -- 80 What are the interiors of planets and satellites like? -- 81 Where do the names of the planets come from? -- 82 What is Bode's law? -- 83 What is Planet X? -- 84 Why is Pluto no longer called a planet? -- 85 Why do some planets have many satellites and others, none? -- 86 How can Mercury survive so close to the Sun? -- 87 Why does Venus have phases like the Moon? -- 88 What are asteroids? -- 89 What is zodiacal light? -- 90 What is the Great Red Spot on Jupiter? -- 91 What are Saturn's rings made of? -- 92 Do all the planets orbit in the same direction? -- 93 What are the Lagrange points? -- 94 Why did the comet Shoemaker-Levy 9 break up as it approached Jupiter? -- 95 Can planetary alignments cause catastrophic events on Earth? -- 96 Did asteroids cause the mass extinctions on Earth? -- 97 Where did the asteroid implicated in the extinction of the dinosaurs fall? -- 98 What could be done if an asteroid threatened to collide with Earth? -- 99 What is the Kuiper belt? -- 100 Where do comets come from? -- 101 What are comets made of? -- 102 In the age of space probes, is it still useful to observe the planets with telescopes? -- 103 What do the Mars rovers do? -- 104 Why colonize Mars? -- 105 Which way to Mars? -- 106 What is solar sailing?. , 107 How could the Voyagers explore so many planets and satellites in one trip? -- Stars and Stellar Systems -- 108 Why do stars shine? -- 109 What are stars made of? -- 110 Why are stars round? -- 111 How many stars are there in our galaxy? -- 112 How are the brightnesses of stars measured? -- 113 How are the distances to stars measured? -- 114 Parsecs? Light-years? Why not miles or kilometers? -- 115 How are the masses of stars determined? -- 116 How big are stars? -- 117 What are the biggest stars known? -- 118 How old are the stars? -- 119 How old is the oldest star? -- 120 Do stars really come in different colors? -- 121 How many different kinds of star are there? -- 122 How do stars die? -- 123 What is a nova? A supernova? -- 124 What is a double star? -- 125 What are Cepheid variables? -- 126 What is a pulsar? -- 127 Do stars ever collide? -- 128 Are we really made of stardust? -- 129 Which star is closest to us? -- 130 Between stars that die and stars that are born, is the population of our galaxy growing or shrinking? -- 131 Are there any isolated stars, outside of the galaxies? -- 132 What is a runaway star? -- 133 What are star clusters? -- 134 Could nuclear fusion, the process that fuels the stars, be tamed to solve our energy problems? -- Galaxies and the Universe -- 135 What is the Milky Way? -- 136 What are the Magellanic Clouds? -- 137 How does the sky appear in different wavelengths? -- 138 What is a nebula? -- 139 How empty is space? -- 140 How many different types of galaxy are there? -- 141 What type of galaxy is the Milky Way? -- 142 How many galaxies are there in the universe? -- 143 How old is the universe? -- 144 How did the universe begin? -- 145 How do we know that the universe is expanding? -- 146 How fast is the universe expanding? -- 147 Who invented the term ''Big Bang?'' -- 148 Does the universe have a center?. , 149 What is the cosmic background radiation? -- 150 What is cosmic inflation? -- 151 When did the first stars form? -- 152 How did the first galaxies form? -- 153 What was there before the Big Bang? -- 154 What is string theory? -- 155 If the universe is expanding, are we also expanding? -- 156 What explains the redshift of light? -- 157 How big is the universe? -- 158 Is there an edge to the universe? -- 159 What is the nature of gravity? -- 160 What is a black hole? -- 161 Can anything escape from a black hole? -- 162 What is dark energy? -- 163 If we cannot see dark matter, how do we know that it exists? -- 164 Were the laws of physics the same in the early universe as they are now? -- 165 How much antimatter is there in the universe? -- 166 How did the theory of relativity affect astronomy? -- 167 What is meant by ''four-dimensional space?'' -- 168 Can anything go faster than the speed of light? -- 169 Why does everything in the universe rotate? -- 170 Why is the night sky dark? -- 171 What is the anthropic principle? -- 172 What is the fate of the universe? -- 173 What major questions remain to be answered in astronomy? -- 174 How can we hope to comprehend the astronomical numbers which astronomy confronts us with? -- 175 Is there a difference between the cosmos and the universe? -- 176 Have any astronomers won the Nobel Prize? -- Life in the Universe -- 177 What is life? -- 178 How did life begin on Earth? -- 179 Could life on Earth have originated in outer space? -- 180 Why is water so important for life? -- 181 Could life evolve from a chemical element other than carbon? -- 182 How do molecules form in the interstellar medium? -- 183 What are extremophiles? -- 184 Given favorable conditions, will life inevitably appear? -- 185 Where in the universe would life have the best chance of appearing?. , 186 What kind of planetary conditions may determine the emergence and development of life?.

Note: Intro -- Avant-propos -- Introduction -- 1 -- La terre, un observatoire en mouvement -- 2 -- L'astronomie primitive : l'apprentissage des astres -- 3 -- L'astronomie dans l'antiquité et au moyen âge : l'époque des géomètres -- 4 -- L'héliocentrisme : la rupture de l'univers médiéval -- 5 -- L'unification de la physique terrestre et céleste par la gravitation -- 6 -- L'avènement de l'astrophysique -- 7 -- DU GALACTOCENTRISME À L'ÉCLATEMENT EXTRAGALACTIQUE -- 8 -- L'insolite univers relativiste -- 9 -- Essai de cosmo-localisation -- Annexe 1 -- Guide chronologique abrégé -- Annexe 2 -- Tableau de symboles -- Annexe 3 -- Constantes de la nature -- Bibliographie -- Index -- _GoBack.