APOD: 2026 September 18 – Messier 33: The Triangulum Galaxy

On September 18, 2026, the Astronomy Picture of the Day features Messier 33, known as the Triangulum Galaxy, accompanied by a professional astronomer's explanation. Simultaneously, astrological guidance for the day warns against making important decisions or shopping, excluding food and gas, after 3:15 p.m. Chicago time. This caution coincides with the moon transitioning from Sagittarius into Capricorn. For Aries, the horoscope for this specific date is rated as average.