If you are a fan of astronomical phenomena, here is a guide to the most prominent events that can be seen this month, with details of dates and locations that allow you to enjoy the best observing moments, whether you are in the northern or southern hemisphere.
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"Suhail Al-Yamani" appears in the sky of the Arabian Peninsula
- September 6-7: The moon is in conjunction with Mars
The crescent Moon and Mars will appear close together in the pre-dawn sky on September 6 and 7, at an angular distance of approximately three degrees (equivalent to the width of three fingers). They can be seen above the eastern horizon starting at three in the morning, and after about 90 minutes, Jupiter will appear behind them, while Saturn will appear in the southwestern sky.
- September 8: The moon is adjacent to Jupiter
After its encounter with Mars, the Moon will conjunct Jupiter in the night sky, before dawn on September 8, a few hours before sunrise.
- September 11-12: New moon and an opportunity to see the Milky Way
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New photos reveal unprecedented details of the most famous star in our sky
Stargazing nights are most impressive during the new moon, when the moon produces almost no light. When combined with a dark location, galaxies, nebulae and the center of the Milky Way can be clearly seen.
The new moon occurs this month on September 11-12, which is an irreplaceable opportunity, as this month is one of the last months in 2026 in which the center of the Milky Way can be seen in the northern hemisphere.
- September 14: The moon approaches Venus
On September 14, the crescent moon will appear within five degrees of Venus above the western horizon shortly after sunset. This phenomenon will shine for about an hour after sunset, without the need to wake up early.
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Discovering the fastest star in our Milky Way Galaxy
- September 18: Peak brightness of Venus
On the evening of September 18, Venus will reach its maximum brightness during its evening apparition of 2026. Because of its brightness, it is the easiest object to see in the sky, and will appear just after sunset with nearby Mercury.
- September 22: Autumn equinox and aurora activity
Autumn officially begins in the Northern Hemisphere on the evening of September 22, and this equinox is accompanied by an increase in aurora activity due to the Earth's tilt, which creates favorable conditions for the solar wind.
Although it is difficult to predict twilight accurately, this time of year arouses enthusiasm for lovers of polar phenomena.
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Solving the mystery of the formation of the Milky Way after 11.8 billion years
- September 25: Mars joins Gemini
On the morning of September 25, Mars will join the twin stars Castor (forehead of Gemini) and Pollux (backhead of Gemini) in the constellation Gemini, in an easily recognizable triple formation in the eastern sky, with Castor at the top, Pollux in the middle, and orange Mars below.
- September 26: The full harvest moon and its companion to Saturn
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Covering 75% of the sky... astronomers reveal the largest two-dimensional map of the universe
The full moon will appear on the evening of September 26, and is known as the harvest moon, reaching its peak light before one o'clock in the afternoon. It is best viewed at sunrise or sunset, as it appears larger and brighter due to an optical illusion, and may appear orange. Saturn will accompany him throughout the night.
- Andromeda Galaxy throughout the month
The Andromeda Galaxy, the closest major galaxy to the Milky Way, is one of the best targets for observing the sky this month. They can be seen with the naked eye in dark skies, but they look most spectacular with binoculars or a small telescope, and are at their best in the middle of the night.
