This week's celestial highlights (Sept 19–28) include Titan casting its shadow on Saturn, a rare event visible until 2039. Saturn reaches opposition on Sept 20, showcasing its rings' brightness via the Seeliger effect. The Double Cluster in Perseus and the Andromeda Galaxy are prominent in the eastern sky. The fall equinox occurs on Sept 22, marking the seasonal change. Algol's eclipse season begins, and Ceres nears opposition. The Moon passes near Scorpius later in the week. Key planets include Venus before dawn, Jupiter rising early morning, and Saturn, Uranus, and Neptune visible through the night. https://skyandtelescope.org/astronomy-news/observing-news/this-weeks-sky-at-a-glance-september-19-28/