G

Gabriel (angel), 367 Galaxy, galaxies, 121, 122, 123, 248, 250-253, 272. See also Milky Way

Galileo Galilei, 169, 270, 274, 304 Galileo spacecraft, 320 Galle, Johann, 269 Galvanometer, 205 Ganymede, 384 Gassendi, Pierre, 281 Gaugamela, Battle of, 18, 381 Geminids, 3 Genesis, 19

George III, king of England, 262 GMS-5 satellite, 332 Goodricke, John, 322, 325 Gospels, 21, 22 Goths, 359-360 GPS receiver, 257 Granules, 129

94, 104, 109, 306, 308 Gravitational lenses, 119-124 Graze, 47, 248, 280, 304, 413 Greece, Greeks

Babylonians and, 86 cycles of eclipses and, 80 day length and, 148 on Earth's shape, 104

eclipse etymology and, 31 Mesopotamia and, 83 on Metonic calendar, 43 octaeteris of, 366, 368 on predicting eclipses, 36 recording of eclipses by, 16 Romans and, 17, 18 on saronic cycle, 89 Sicily and, 23 on telescope, 141 on total solar eclipses, 328 Green, Charles, 286, 289, 298, 299 Greenhouse effect, 171 Greenwich Mean Time (GMT), 352

Greenwich Observatory. See Royal

Greenwich Observatory Gregory, James, 285 Gregory the Great, Pope, 362 Gregory XIII, Pope, 39, 364, 407 Ground track, 53, 179—180. See also specific types of eclipse(s) of 1880, 213 asteroids and, 258 barycenter and, 387 definition of, 437 displacements of, 154, 155, 156 of eclipses from 1996 to 2020, 342

geographical shifts in, 49—51,

420-421 Halley on, 163, 164, 166-167, 168, 181 predictions of, 175-176, 216219

Sun size and, 172

in twentieth century, 50 in United States, 235—236 width of, 14, 53 GulfWar, 63 Gutenberg, Johannes, 94

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