N

Nanometer, 145

NASA (National Aeronautics and Space Administration) Ames Research Center, 257 Goddard Space Flight Center, xiv

Langley Research Center, 201 Mariner 10 satellite, 315 NEAR-Shoemaker satellite, 255 Solar and Heliospheric

Observatory, 133 Voyager 2, 266, 267 Native Americans, 175. See also Indians, American; specific Native American tribes Nativity, 21 Nature, 202

Nautical Almanac Office, U.S., 233 Naval Observatory, U.S., 200, 202, 217

Navigation, 289 Bowditch on, 187 Moon and, 91-93, 285 Regiomontanus and, 94, 96

solar wind and, 131 transits of 1761 and 1769 and, 299

Venus and, 301 Navy, Royal, 74, 294 Navy, U.S., 118, 225-226 NEAR-Shoemaker satellite, 255 Nebuchadnezzar, 84-85 Nebulae, 126, 263 Nebulium, 144-145 Neptune

Adams and, 269 energy of, 108

Le Verrier and, 269, 304, 305306

Mercury and, 305 minor planets and, 317 moon of, 384 orbit of, 312 Planet X and, 317 Pluto and, 309, 310 rings around, 267, 269-270, 271 Uranus and, 311-312 New American Practical Navigator, The

(Bowditch), 184 Newcomb, Simon, 295, 299 New English Bible, vii, 22 New moon conjunction and, 42

379, 380 fertility near, 38 Islamic calendar and, 40 Metonic cycle and, 44 Sun and, 401 during Zulu Wars, 211

Newton, Sir Isaac gravitational theory of, ix, xiv, 70, 94, 104, 109, 111-113, 119, 308 lunar theory of, 92, 93 on motion, ix, 178 on spectroscopy, 139 NewYork Times, 236 Nicaea, Council of, 365, 407 Nicene Creed, 365, 369 Nicias, 23

NOAA-14 satellite, 333 Node(s), 412

definition of, 43, 438 during 2003 eclipse, 57 lunar, 44-45, 49, 410, 414, 415,

416, 421, 424-425, 428 Moon and, 413-414 at opposition, 409 regression of, 403, 404, 405, 410 Sun and, 413 ofVenus, 276 Northumbria, Northumbrians, 368,

369, 372, 377 Nuclear fusion, 5, 107, 110, 126, 127, 128, 160, 324

Occultation(s), 282 asteroids and, 256 definition of, 272, 438 Dionysus and, 320 lunar, 187, 245-248, 250-253, 254-260, 261, 272

by Mars, 262-263 of Neptune, 270 by planets, xiv by Pluto, 316-317 of Saturn, 270-271 transits and, 302 by Uranus, 266, 267, 268 Octaeteris, 366 Octavian, 367 Ojibwa, 175 O'Kelly, Dennis, 2 Old Testament, 19 Olympics, 366 Oppolzer, Theodor von, 432 Opposition apogee and, 408 definition of, 436, 438 lunar eclipse at, 401, 402, 403,

405, 430 in Metonic cycle, 416 Moon and, 42, 43, 428 nodes at, 424-425 perigee and, 409 in saronic cycle, 46, 411, 418 Orbit(s), 152-153. See also Earth, orbit of of asteroids, 257 of binary stars, 251, 321 of comets, 260 ofJupiter's moons, 314 of Mercury, 111, 272, 273, 306, 308

of Moon, 68-70, 104, 273, 399400, 402, 403, 404, 405, 410 of planets, 302, 312

of Pluto, 268, 310 radio telescopes in, 253 of satellites, 301 of stars, 124

Thales of Miletus on, 87 of Uranus, 265, 266, 267, 268 ofVenus, 272, 273, 276 Oswald, king of Northumbria, 368— 369

Oswin, 371

Oswy, king of Northumbria, 369—

370, 371-372, 373-375 Ottoman Empire, Ottomans, 174175

Oxford University, 21, 90, 162, 163,

166, 298 Oxygen, 126, 260

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