Achilles, 131 Acrisius, 66 Adams, 283 Ægeus, 103 Ærolites, 245 Æschylus, 21, 184 Æsculapis, 109, 169 Akrab, 157 Albireo, 115, 122, 124, 125 Alcor, 39, 47 Alcott, 157 Alcyone, 186 Aldebaran, 13, 184, 185 Algenib, 78 Algol, 31, 63, 64, 65 Alioth, 40 Allen, 96, 138, 176 Alnilam, 176 Alnitak, 11, 176, 177 Alpha Centauri, 101, 134, 141, 142, 209 Alphard, 135 Alphecca, 104 Alpheratz, 72 Alps, lunar mountains, 303, 304 Alps, Valley of, 304 Al Rischa, 83 Alshain, 129 Altair, 129, 192 Alwaid, 110 Amazon Star, 171 Ambrosia, 20, 24, 184 Amelia, 204 Amphitrite, 25, 131 Amru, 162 Andromeda, constellation, 71, 75, 79 Nebula, 72, 74 Triple star, 72 Andromids, 71, 91, 240, 244 Legend, 55, 56, 57, 58, 59 Anger, 32 Antares, 3, 11, 13, 127, 145, 152, 153, 155, 156, 171, 185 Autolycus, lunar crater, 313 Apennines, lunar mountains, 303, 311, 304 Aphrodite, 33 Apollo, 17, 18, 24, 26, 27, 28, 49, 77, 88, 116, 118, 120, 168, 169, 268 April meteors, 116 Aquarius, constellation, 128, 157 Legend, 128 Aquila, constellation, 127, 128, 129 Altair, 129, 192 Legend, 127, 128, 202 Arabian astronomers, 11, 40, 42, 60, 63, 146, 176, 184 Aratus, 8, 63, 79, 83, 93, 103, 104, 105, 129, 148, 149, 157, 174, 185, 186, 189, 192 Archer, The, 131, 132, 133, 134 Areas, 44, 97 Archæan Age, 293 Archilochus, 225 Archimedes, lunar crater, 312 Arcturus, 3, 11, 13, 38, 88, 96, 97, 98, 99, 101, 104, 113, 114, 142, 147, 148 Argo, constellation, 29, 85, 209 Canopus, 163, 193, 197, 209, 210 Legend, 131, 193 Argonautic Expedition, 49, 85, 210 Ariadne, 88, 102, 103 Ariadne's Crown, 104 Ariel, 282 Aries, constellation, 29, 83, 84, 231 Legend, 84 Arion, 130 Aristarchus, lunar crater, 311, 312 Aristillus, lunar crater, 313 Aristotle, 202 Arrow of Hercules, 129 Arrow of the Archer, 133 Ascalaphus, 151 Aselli, 92 Asterion, 97, 98 Asterope, 186 Astræa, goddess, 24, 148, 149 Astræa, planetoid, 234 Astræus, 247 Astrology, 268 Atergatis, 56 Atlantides, 188 Atlas, 21, 48, 68, 107, 186, 188, 247 Auriga, constellation, 137 Capella, 138, 139, 140, 142 Legend, 20, 137, 138, 139 Aurora, 27, 77, 151, 170, 247, 248 Auroræ, 217