INDEX

Abell, George, 351

Abul Wala, 57

Académie des Inscriptions et Belles-Lettres, 147

Académie Royale d’Architecture, 147–8

Académie Royale des Sciences, 147–8, 149–50

active optics, 321

Adams, John Couch, 192–3

adaptive optics, 321

Adelard of Bath, 65–6

al-Birini, 57–8

al-Hakim, Caliph, 59

Al Sufi Abd al-Rahman (Azophi), 56–7

Albategnius, 56, 60, 61

Alexander the Great, 24

Alexandria (Egypt), 24, 36, 37–8, 53

Lighthouse, 35

algebra, 55, 61–2

Alhazen, 58–9

Allen Telescope Array, 274–5

Almagest, 43–9, 67

amateur astronomers: role, 325

Andalusia, 53–4, 65–6

Andromeda Galaxy, 57, 233–4, 237–8

Anglo-Saxon Chronicle, 68

angular measurement: origin of degrees and minutes, 18

Antikythera instrument, 51–2

Apollo missions, 306–7

Apollonius of Perga, 45, 48, 62, 93

Arabian and Persian astronomy, 53–66

arc of the meridian, 159

Archimedes, 98

Aristarchus, 25–31

Aristotle, 24–5, 32, 105–6

Armstrong, Neil, 306–7

Arrest, Heinrich Louis d,’ 193

Arzachel, 59–60

astrolabes, 51–2, 54–5, 60, 70–1, 162

astrology

Arab, 57–8

beginnings, 12

in Renaissance, 72, 73, 82–3, 84, 87, 88, 94–5

astrophotography, 203–5

atmospheric refraction, 34

atomic weapons, 225–6

atoms, 198, 247–58, 265–9

Augustus, Roman emperor, 42

Azophi see Al Sufi Abd al-Rahman

Aztecs, 13–14

B2FH paper, 265–7, 297–8

Babbage, Charles, 188

Babylonians, 18–20

Barberini, Cardinal see Urban VIII, Pope

Barrow, Isaac, 135

Bell, Jocelyn, 261–3

Ben Sabbah, 60–1

Bessel, Friedrich W., 200

Besso, Michele, 211

Betelgeuse, 252–3

Big Bang

and black holes, 302

criticisms, 243, 265–6

Hubble’s contribution, 240–1

origins of theory, 222

overview, 326–39

and singularities, 299

situation, 289

black holes

first suggestion of existence, 155–6

overview, 269–73, 276–9, 298–303

and quasars, 281, 298

supermassive, 352–3

theory universe is contained inside, 287–9

Bohr, Niels, 248–9

Bondi, Hermann, 243, 297

Brahe, Tycho, 81–8, 90, 95, 116, 258

Brown, Michael, 318

brown dwarfs, 349

Bruno, Giordano, 70, 96–7

Brunowski, Johann, 91

Burbidge, Geoffrey, 298

Burbidge, Margaret, 298

Byzantines, 52–3

Caccini, Tommaso, 103

calculus, 133–4, 156–7, 189

tensor calculus, 224

calendars

ancient, 13–14

Arab, 61

Babylonian, 18–20

Chinese, 49–50

Egyptian, 20–1

Gregorian, 41, 56, 73–4

Julian, 41–2

Sumerian, 17–18

Callisto, 314, 315

Cambridge University, 112–14, 129–30, 135, 261–2, 292–3

Camden, William, 110

Canopus, 33–4

carbon: formation, 253, 266–7

Cassini, Gian-Domenico, 151–2, 158

Cassini, Jacques, 159

Cassini, Jean-Dominique, comte de, 160

Cassini de Thury (Cassini III), 159–60

Cassini spacecraft, 312, 316

Cassini division, 158–9

Castelli, Benedetto, 104

Centurion (ship), 173

Cepheid variables, 230–1, 237–8, 341

Ceres, 318

CERN, 333

Chaldeans, 33

Challis, James, 192–3

Chandra Observatory and Telescope, 322, 324

Chandrasekhar, Subrahmanyan, 256, 324

Charles II, king of Great Britain and Ireland, 165

Charon, 318

Chaucer, Geoffrey, 70–1

Cheever, Ezekiel, 114

chemical compounds: notation system, 198

Chinese astronomy, 12, 49–50, 258

Christian IV, king of Denmark, 87

Chwolson, Orest, 223

El Cid, 65

clocks and watches

17th-century manufacture, 111

at Greenwich, 167

radium clocks, 249

regulation by pendulum, 96–7, 99

shipboard, 172–6

CMB (cosmic microwave background), 327–30, 335–6, 339

Colbert, Jean-Baptiste, 147, 151

collimators, 322

Columbus, Christopher, 162

comets

and amateur astronomers, 325

discovered by SOHO, 323

Halley’s, 68–9

Helvelius’ observations, 126–7

Kuiper Belt, 319

mentions in Anglo-Saxon Chronicle, 68

Oort Cloud, 319

Shoemaker-Levy 9, 313, 325

supposed influence on life on Earth, 11, 49

Tempel 1’s contrived collision with spacecraft, 324–5

compasses, 194

Compton Telescope, 322

conic sections, 48, 62, 93

Cook, Captain James, 176–7

Copernicus, Nicolaus influence, 83, 91, 96–7, 104, 116

influences on, 60

overview, 71–80

Cosmic Background Explorer, 329

cosmic microwave background see CMB

cosmological constant, 221–2, 355–6

cosmology

ancient Greek, 23, 25–31, 37, 44–9

Arab, 56

Babylonian, 19–20

Copernican, 71–80

Galileo’s support for Copernican, 104–8

Crab Nebula, 263

Crabtree, William, 95, 116, 118, 119, 121–2

cubic equations, 62

Curtis, Heber, 233–4

Cygnus X-1, 273

Dalton, John, 198

dark energy, 340, 355–7

dark matter, 340, 348–51, 352–3

Darwin, Charles, 201–2

Davy, Sir Humphrey, 196

Dawn Mission probe, 318

Deep Impact spacecraft, 324–5

deferents and epicycles system, 44–5

Deptford, HMS, 174

Desargues, Girard, 149

Descartes, René, 148, 149, 150

Dicke, Robert, 328

Digges, Captain Dudley, 174–5

dimensions: fourth, 283–6

Din Malik Shah, sultan of Jalal, 61

Discovery space shuttle, 319

Doppler, Christian, 232

Doppler effect, 232

Draper, Henry, 204

Draper, John, 204

dust, 282–3, 346

dwarf planets, 318

E = mc2, 221, 226, 247, 252, 338, 355

Earnshaw, Thomas, 176

Earth

age, 201–3

Arab cosmological theories, 56

Copernican cosmology, 71–80, 104–8

craters, 363

distance from Sun, 152, 177

early cosmological theories, 13, 19–20, 23, 25–31, 37, 44–9

death, 253

escape velocity, 270–1

formation, 358–61

and formation of the Moon, 361–3

measuring, 31–2, 151

orbit, 56, 59

rotation cycles, 40

shape, 159

Easter, calculating date, 74

eclipses, lunar

ancients’ knowledge, 26, 28, 39–40, 44, 47

and longitude calculation, 163

supposed influence on life on Earth, 82

eclipses, solar

ancients’ knowledge, 5–7, 23, 25–6, 37–8, 44, 47

and longitude calculation, 163

mentions in Anglo-Saxon Chronicle, 68

Eddington, Sir Arthur, 220, 223, 252, 341

Egyptian astronomy, 11, 20–1

Einstein, Albert, 136, 209–27, 232

Einstein, Eduard, 211

Einstein, Elsa, 225

Einstein, Hans Albert, 211

Einstein, Mileva, 211

Einstein Cross, 223–4

Einstein Ring, 223

electricity, 194–7

nuclear-generated, 251

electromagnetism, 224, 333, 337

electrons, 248

Electroweak Era, 337

electroweak force, 333, 337

elements

discovery, 198–9

formation, 253, 254, 256–7, 265–9, 297–8

entropy, 298, 299

epicycles see deferents and epicycles system

equinoxes, precession of, 40, 42, 47

equivalence, principle of, 217–21

Eratosthenes, 31–2

Eris, 318

escape velocities, 155–6, 270–1

ether, 206–9

Euclid, 62

Eudoxus, 45

Euler, Leonhard, 157, 176

Europa, 314, 315

EUVE (Extreme Ultraviolet Explorer), 322–3

Evans, Revd. Robert Owen, 325

Evelyn, John, 136–8

event horizons, 271, 277

evolution theory, 201–2

extraterrestrial life, 96–7, 261–3, 274–5, 358, 363–4

Extreme Ultraviolet Explorer see EUVE

Far Ultraviolet Spectroscopic Explorer see FUSE

Faraday, Michael, 195–6, 226–7

Fermat, Pierre de, 149

Fisher, Richard, 342

Fitzgerald, Edward, 63

FitzGerald, George, 209

Flamsteed, John, 125, 152, 166–9, 170–1

force concept, 332–4

Fowler, William, 298

France: maps, 159–60

Frederick II, king of Denmark, 62, 84–5, 86, 87

Friedmann, Alexander, 221–2, 326

FUSE (Far Ultraviolet Spectroscopic Explorer), 322–3

Gagarin, Yuri, 305–6

galaxies

classification, 238–9

clustering, 351–2

measuring distance from Earth, 344–5, 351–2

movements, 239–43

rotation and structure, 346–53

see also individual galaxies by name

Galileo spacecraft, 312, 313–14

Galileo Galilei, 96, 97–108, 148, 149, 164, 291

Galle, Johann Gottfried, 193

gamma rays, 322

Gamow, George, 326–7

Ganymede, 314–15

gas giants, 314, 360

Gassendi, Pierre, 123, 148

Geller, Margaret, 352

Gellibrand, Herbert, 116, 119

geology, 202–3, 249

geometry, 57, 62

George III, king of Great Britain and Ireland, 184

George, Prince, of Denmark, 169

Gervaise of Canterbury, 69–70

Gold, Thomas, 243, 297

Graham, George, 172

Grand Unification Epoch see GUE

gravitational accretion, 359

gravitational lensing, 222–4, 350–1

gravity

and black holes, 269–70, 271–2, 277–8

Copernican attitude, 75

and dark energy, 355–7

escape velocities, 155–6, 270–1

Galileo’s experiments, 99–100

importance, 193–5

measuring specific, 98

Newton’s theory, 131–3, 134, 135–6, 138–45

and planetary orbits, 158

separation from other forces during Big Bang, 334

and space/time, 216–20

and unified field theory, 333–4

“Great Debate,” 233–4

Great Wall, 352

Greek astronomy, 22–40, 43–9

Green, Charles, 177

Greenwich Observatory, 151, 165–9

Gregory XIII, Pope, 41

Grossmann, Marcel, 224

GUE (Grand Unification Epoch), 335

Guth, Alan, 335

H-R diagram, 341–2

Habicht, Konrad, 212

Hadron and Lepton Era, 337–8

Hale, George Ellery, 234–5, 236

Halley, Edmond, 68–9, 138–43, 169–71

Harrison, John, 171–6

Harrison, William, 174

Harvard, John, 114

Harvard Observatory, 229

Harvard University, 114

Hawking, Jane, 293, 294

Hawking, Stephen, 278, 290–304

Heisenberg, Werner, 250

helium, 338

Herodotus, 20–1, 22

Herschel, Caroline, 180–1, 182, 184, 185, 189

Herschel, John, 126, 184, 186, 188–91

Herschel, Margaret, 190

Herschel, Mary, 185, 188

Herschel, William, 178–89

Hertzsprung, Ejnar, 341

Herzog, Albert, 211

Hesiod, 22

Hevelius, Elizabeth Margarethe, 127

Hevelius, Johannes, 126–7

Hipparchus, 36–40, 44, 46, 47

Hooke, Robert, 138–40, 153

Horace, 78

Horrocks, Jeremiah, 95, 110–26, 168

Hoyle, Fred, 243, 253, 265–7, 292, 296–8

Hubble, Edwin, 222, 234, 235, 236–42, 344

Hubble Space Telescope, 237, 241, 317, 319–22, 345

Hubble’s constant, 239–42, 344–5

Hubble’s law, 239–42, 344, 354–5

Huchra, John, 224, 352

Huchra Lens, 224

Humason, Milton, 239, 344

Huygens, Christiaan, 138, 316

Hven, 84–6

hydrogen, 338

hydrogen line, 342–3, 346–7

hydrogen spectrum, 199

hydrostatic balances, 98

Inflationary Epoch, 335–6

infrared, 187

interferometry, 321

Io, 314

Islamic astronomy see Arabian and Persian astronomy

Israel, Werner, 303

James I and VI, king of England and Scotland, 85

Jansky, Karl, 259–60

Jeans, Sir James, 243, 297

Jodrell Bank, 261

Julius Caesar, 41, 42

Jupiter

ancients’ understanding of movements, 11

and the asteroid belt, 360

and Copernican cosmology, 78

exploration, 312–16

moons, 101, 314–16

orbit, 158

rings, 360–1

use to calculate speed of light, 152–3

use to determine longitude, 151, 163–4

Keck Telescopes, 321

Kelvin, Lord, 202, 246–7

Kendall, Larcum, 176

Kennedy, John F., 306

Kepler, Johannes, 81, 87–95, 116, 258

Kepler’s Star, 91

Khwajah Nizami, 64

Kuiper, Gerard, 319

Kuiper Belt, 319

Lagrange, Joseph-Louis, 157, 158, 188

Laika (dog), 305

Lansberg, Philip, 116

Laplace, Pierre Simon, 157, 158, 188

Large Hadron Collider, 333

latitude and longitude, 36, 151–2, 159, 161–77

Le Verrier, Urbain-Jean-Joseph, 193, 219–20

leap years, 41

Leavitt, Henrietta, 229–31, 236, 341

Leibniz, Gottfried, 156

Lemaître, Georges, 222, 326

Levy, David, 325

light

Herschel’s experiments, 187

Newton’s experiments, 130–1

speed of, 152–3, 215–16

waves or particles?, 153–4, 206–9, 249–50

see also optics

light years, 200

Lippershey, Hans, 100

Liverpool, 109–11

longitude see latitude and longitude

Lorentz, Hendrick, 209

Lorini, Nicolo, 103

Louis XIV, king of France, 150–1

Lowell, Percival, 308

Lowell Observatory, 231

lunar parallax, 46, 341

Lyell, Charles, 202–3

magnetism, 194–7

see also electromagnetism

maps, 159–60

Mariner missions, 307, 311

Mars

ability to support life, 363–4

ancients’ understanding of movements, 11

and Copernican cosmology, 77, 78

exploration, 307–10

Galileo’s observations, 102

and Horrocks’ hypothesis, 123

orbit, 92–3

use to determine Earth–Sun distance, 152

Maskelyne, Nevil, 173, 182

Mather, Richard, 112

matrix mechanics, 250

Maxwell, James Clerk, 196–7, 224, 226–7

Mayans, 14

Mayer, Tobias, 176

Mayer, Walter, 225

Mendeleyev, Dmitry, 199

Mercury

ancients’ understanding of movements, 11

and Copernican cosmology, 77, 78

death, 253

exploration, 311–12

Gassendi’s observations of transit, 123

orbit, 219

Mersenne, Marin, 148–9

Messenger mission, 312

Messier, Charles, 182

meteors, 11, 69–70

Michell, John, 156

Michelson, Albert, 207–9, 215

microwaves, 197

Milky Way

Herschel’s model, 186–7

position in universe, 241

rotation, 347–8

size, 236

structure, 235–6, 346–9

Sun’s position, 186–7, 235–6, 346

Miller, Stanley, 364

Miranda, 317

Mohammed, Prophet, 53

Moon

ancients’ understanding of movements, 2, 5–10, 13, 26–9, 44, 46

craters, 363

dark side, 306

distance from Earth and size, 26–9, 37, 46

Earth’s gravitational force on, 135–6

first examination by telescope, 101

formation, 361–3

landings, 306–7

libration, 157

lunar parallax, 46, 341

maps, 126–7, 181

meteorites striking, 69–70

orbit, 124–5

phases, 9–10

photographs, 204

rotation, 159

and Sumerians, 17

and tides, 10

use to determine longitude, 151, 163, 164–5, 167–9, 175–7

worship, 14

see also eclipses, lunar

moons: formation, 360–1

Morley, Edward, 208, 215

motion, Newton’s laws, 133–4, 143–5

Mount Wilson Observatory, 234–7

Much Hoole, 117–18

mural quadrants, 86

navigation

arc of the meridian, 159

astrolabes, 51–2, 54–5, 60, 70–1, 162

compasses, 194

measuring longitude, 151, 161–77

nautical almanacs, 170–7

origin of degrees and minutes, 18

origin of latitude and longitude, 36

nebulae, 181, 182, 204, 244–5, 346

planetary, 254

spiral, 231–4, 237–8

Neptune, 192–3, 312, 317, 360–1

neutron stars, 257, 264–5

neutrons, 337

New Horizons probe, 318

Newton, Humphrey, 145–6

Newton, Isaac

date of birth, 291

on Descartes, 150

and Flamsteed’s research, 169

on Horrocks, 126

and light, 153–4

as Master of the Mint, 191

and Moon’s motion, 168

overview, 128–46

rivalry with Leibniz, 156

and telescopes, 131, 180

validity of laws, 226–7

Nizam ul Mulk, 60–1

Novara, Domenico Maria de, 72

nuclear fission, 251

nuclear force

strong, 332, 333, 335

weak, 332, 333

nuclear fusion, 251

nuclear physics, 246–58

numerical systems: zero, 55

observatories

Greenwich, 151, 165–9

Harvard, 229

Hubble Space Telescope, 237, 241, 317, 319–22, 345

Lowell, 231

Mount Wilson, 234–7

Palomar, 235, 237

Paris, 150–2

in space, 322–4

Uraniborg, 84–6

Odoacer, 52

Oenopides, 23

Olber, Heinrich, 155

Olber’s paradox, 155

Omar Khayyam, 60–5

Oort, Jan, 319

Oort Cloud, 319

Opportunity rover, 309

optics, 58–9

active and adaptive, 321

Orion Nebula, 204

pair production, 335

Palomar Observatory, 235

Pandora, 316

parallax method, 340–1

lunar parallax, 46, 341

solar parallax, 123–4

stellar parallax, 200–1, 204–5, 341

Parbsjerg, Manderup, 82

Paris Observatory, 150–2

parsecs, 200

Pascal, Blaise, 149

Pascal’s triangle, 62

Peacock, George, 188–9

Penrose, Roger, 278, 299–300, 302–3

Penzias, Arno, 328

periodic table, 199

Perlmutter, Saul, 354

Persian astronomy see Arabian and Persian astronomy

PG 2112+059 (quasar), 282

Phoenix lander, 309

photoelectric effect, 213–14

photography see astrophotography

photons, 208, 248–9, 338–9

pi, 18–19

Picard, Jean, 151–2

Pickering, Edward, 205, 229

Planck, Max, 330

Planck Era, 334

Planck scale, 330–1

plane of the ecliptic, 48

planetesimals, 359

planets

ancients’ understanding of movements, 10–11, 44–5, 46, 47–9

and Copernican cosmology, 76–9

Descartes’ theories on motions, 150

dwarf planets, 318

escape velocities, 155–6, 270–1

formation, 358–61

gas giants, 314, 360

gravity’s effect on orbits, 138–45, 158

Horrocks’ hypothesis, 123

Kepler’s laws of planetary motion, 93–4

life on other, 96–7, 261–3, 274–5, 358, 363–4

measuring distance from Earth, 341

orbits and positions, 79, 81–95

see also individual planets by name

Pluto, 318

Poseidonius, 33–4

prime mover, 48

prisms, 130–1

probability, binomial, 62

Prometheus, 316

protons, 337

protostars, 245, 339

Ptolemy

influence, 67, 72, 75, 83, 91

and the Moon, 125

on orbit shape, 93

overview, 43–9

pulsars, 261–5

Pythagoras, 23

quadrants, mural, 86

quantum mechanics, 225, 250, 296, 300–2

quarks, 337

quasars, 276, 279–83, 298

quintessence, 356–7

radio waves, 197

ratios, 62

Reber, Grote, 260

Reconnaissance orbiter, 309

red giants, 252–8, 266

redshift, 231–2, 280–1, 344–5, 352

relativity

and black holes, 277

general theory of, 216–21, 222–4

and quantum mechanics, 296, 300–2

special theory of, 208–9, 210, 213–16

Rhaeticus, 80

Rhodes, Colossus of, 35–6

ring systems, 360–1

Roman empire, fall of, 52

Rømer, Ole, 152–3

Romulus Augustus, Western Roman emperor, 52

rotation curve, 348

Royal Astronomical Society, 188

Royal Society, 131, 138, 147, 149–50

RR Lyrae variables, 236

Rubin, Vera, 348

Rudolf II, Holy Roman Emperor, 87, 90, 94–5

Rudolphine Tables, 90–1, 94–5, 116

Russell, Henry Norris, 341

Rutherford, Ernest, 247–8

Sagredo, Giovanni Francesco, 105

Salviati, Fillipo, 104

Sandage, Allan, 279

satellites, manmade, 305, 306

Saturn

ancients’ understanding of movements, 11

and Copernican cosmology, 78

exploration, 312, 316–17

moons, 159, 185–6, 316–17

orbit, 158

rings, 101–2, 158–9, 316, 360

Schiaparelli, Giovanni, 308

Schmidt, Brian, 354

Schmidt, Maarten, 280

Schrödinger, Erwin, 250

Schwarzchild radius, 272, 287

Scout missions, 309–10

Secchi, Angelo, 205–6

SETI (Search for Extraterrestrial Intelligence), 274–5

Seven Wonders of the Ancient World, 35–6

Shapley, Harlow, 233–4, 235–6

Shoemaker-Levy 9 (comet), 313, 325

singularity theory, 299–300, 302

Sirius, 11, 254

Slipher, Vesto, 231–2, 239, 344

SNC meteorite, 363–4

SOHO (Solar and Heliospheric Observatory) spacecraft, 323

solar parallax, 123–4

Solovine, Maurice, 212

solstices, precession of, 42

Sosigenes, 41

South, James, 189–90

space exploration, 305–25

spectrographs, 205

spectroscopy, 205–6, 231–3

spiral nebulae, 231–4, 237–8

Spirit rover, 309

Spitzer Space Telescope, 322–3

Sputnik I, 305

stars

ancients’ understanding of movements, 47, 48

binary, 181–2, 189–91, 273

birth, 245–6, 339, 346

death, 252–8

distribution in sky, 186–7, 189–91

and element formation, 253, 254, 256–7, 265–9, 297–8

escape velocities, 271

globular star clusters, 235–6

Helvelius’ maps, 127

magnitudes and positions, 36–7, 57, 86–7, 200–1, 204–5, 229–31, 341–4

neutron stars, 257, 264–5

photographs, 204

spectral features, 205–6, 231–3

stellar parallax, 200–1, 204–5, 341

supernovae, 83–4, 91, 257–8, 261–9, 325

telescopes lead to discovery of many more, 102–3

variable stars, 230–1, 236, 237–8, 342

why they shine, 245–7, 251–2

see also individual stars by name

steady-state theory, 243, 297, 327–9

stellar parallax, 200–1, 204–5, 341

Strabo, 33

Stukeley, William, 132

Sumerians, 16–18

Sun

age, 202, 246–7

ancients’ understanding of movements, 2, 5–10, 13, 23, 26, 44, 48

and Babylonians, 19

classification as star, 154

and Copernican cosmology, 71–80, 104–8

death, 252–4

distance from Earth and size, 29–30, 38–40, 46, 152, 177

distance from planets, 94

gravitational effect on planets’ orbits, 138–45

position in Milky Way, 186–7, 235–6, 346

solar parallax, 123–4

solar wind, 323

space observation of, 323

why it shines, 251–2

worship, 14

see also eclipses, solar; stars

supernovae, 83–4, 91, 257–8, 261–9, 325

Type 1a, 343–4, 354

super-sphere, 285–6

Tariq ibn Ziyad, 66

telescopes

Allen Telescope Array, 274–5

Chandra, 322

Compton, 322

examples through history, 2

Hale, 237

Herschel’s, 179–81, 185–6

Horrocks’ poem about, 115

Hubble Space, 237, 241, 317, 319–22, 345

invention, 100–1

Jodrell Bank, 261

Keck Telescopes, 321

Mount Wilson, 234, 235

new techniques, 321

radio, 259–63

reflecting, 131, 179–81

Spitzer Space, 322–3

Tempel 1 (comet), 324–5

tensor calculus, 224

Thales, 23

thermodynamics, 298–9

3C 48 (star), 279

3C 273 (star), 279, 280

tides, 10

time

and black holes, 277, 278

and special theory of relativity, 213, 215

time measurement

on board ship, 172–6

and distance from equator, 169–70

length of months, 42

and longitude calculation, 163–76

origin of days of the week, 19

origin of minutes and seconds, 18

see also calendars; clocks and watches

Titan, 316–17, 364

Toledo, 59, 65–6

Tombaugh, Clyde, 318

Towneley, Richard, 152

trigonometry, 57

Triton, 317

Tully, Brent, 342

21-cm hydrogen line, 342–3, 346–7

Twin Quasar, 223

umbra, 28

uncertainty principle, 250

unified field theory, 333–7

universe

age, 154, 241–2, 344–5

expansion, 221–2, 231–2, 239–43, 353–7

“Great Debate,” 233–4

infinity of, 154–5, 353–5

measuring, 340–9

nature of, 285–9

size, 187–8, 200–1, 231–4, 237–9

steady-state theory, 243, 297, 327–9

structure, 344–52

Uraniborg, 84–6

uranium, 249

Uranus, 182–4, 312, 317, 360–1

Urban VIII, Pope (Cardinal Barberini), 104, 105, 106

Urey, Harold, 364

vacuum energy theory, 356

Venera probes, 310

Venus

ancients’ understanding of movements, 10

and Copernican cosmology, 77, 78

death, 253

exploration, 310–11

orbit and size, 119–23

phases, 102

use to determine Earth–Sun distance, 177

Viking missions, 307–8

virtual particles, 300–1

voids, 352

Vostok I, 305–6

Voyager probes, 312, 316, 317

Wallis, John, 112–13, 156

watches see clocks and watches

water hole, 274

Watzenrode, Lucas, 72, 73

wave equation, 250

Whiston, William, 170–1

white dwarfs, 254

Wickens, John, 129

Wilkinson Microwave Anisotropy probe, 329

Willis, Roger, 173

Winteler, Jost, 211

wormholes, 279

Worthington, John, 113, 119

Wren, Christopher, 138–40, 165–6

X-rays, 197, 273, 322, 324

zero, 55

zodiac constellations, 12

Zwicky, Fritz, 223, 349