National Geographic : 1943 Jul
Crosslike Cygnus (the Swan) and Aquila (the Eagle) Are Conspicuous in the August Sky CYGNUS is at the zenith and Aquila south of it (pages 106-107). Be sure to look also for the small but beautiful constellation Delphinus (the Dolphin). Notice the black patches in the Milky Way in or near Cepheus, Cygnus, and especially Aquila. They are vast clouds of cosmic dust which dim the light of the distant stars behind them. Venus attains its greatest brilliance on July 31, though it still appears too early in the evening to show on this chart. Thereafter it moves rapidly toward the sun and by the end of August is in visible to the naked eye. The ecliptic, or apparent path of the sun and planets through the heavens, is shown as a curved line on each chart, in most months divided be tween the northern and southern skies. Sagittarius (the Archer) and Scorpius (the Scor pion) are conspicuous in the south (pp. 105-6). Just above the southern horizon (top of page) in lower latitudes you can see the minor constel lations Corona Austrina (the Southern Crown), a delicate oval of stars; Telescopium (the Tele scope); and one or two stars in Indus (the American Indian) and Pavo (the Peacock). The August chart also shows the appearance of the early-morning sky for May 15 at 4:30 a.m.; May 30, 3:30 a.m .; June 15, 2:30 a.m .