Supermoon 2025 September 11 – A “supermoon” will appear up to 7% larger than a regular full moon. Explore what you can see in the night sky this september, including a total lunar eclipse, the moon passing in front of venus, and more! One strict definition of a supermoon. The term 'supermoon' originates from a concept in astrology, but now has been adopted by some astronomers.
Supermoon 2025 September 11
Check the dates for every full moon throughout the year, learn about the moon's phases, 'supermoons' and more A “supermoon” will appear up to 7% larger than a regular full moon.
Supermoon 2025 September 11 Supermoon 2025 Sam Mills
- Read our monthly guides to the night sky, and check out the latest news from the royal observatory greenwich astronomy team
- One strict definition of a supermoon.
- Check the dates for every full moon throughout the year, learn about the moon's phases, 'supermoons' and more
- One strict definition of a supermoon.
- One strict definition of a supermoon.
