Now our view of the celestial globe has changed to the Autumnal Equinox. The stars of Summer are setting and within hours the stars of Winter will rise. Let’s look between 9:00—10:00 p.m. starting around mid-September.
In the northern hemisphere Ursa Major is on the northern horizon. Northwest, Bootes is setting while W-shaped Cassiopeia and Perseus are rising. Overhead huge, cross-shaped Cygnus commands attention flying along the Milky Way. To its west, Lyra and brilliant Vega are above the setting Hercules. East, the large diamond-shaped “Great Square” of Pegasus dominates. Scorpius sets southwest, while teapot-shaped Sagittarius tips—spilling the “steam” of the Milky Way from its spout. High south, small cross-shaped Aquila stands with bright Altair marking its place. Southeast, smile-shaped Capricornus and the faint stars of Aquarius are rising.
In the southern hemisphere, Cygnus marks the north, flanked by Lyra and Hercules northwest and Pegasus northeast. Overhead stands Capricornus, while Sagittarius and the westering Scorpius show well. On the horizon Crux has moved southwest. The triangle of Tucana is higher southeast and bright Archenar shows the way to the long snake-shape of Horologium.
The seasons—and the stars— are changing again!