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• Create Date 31 August 2025
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BASIL September 2025

The front cover shows photos from the BAS Summer BBQ in August, including watching a sci-fi movie in the barn.

Key topics for the month include:

• The September ε-Perseid meteor shower will be active from 5 September to 21 September, producing its peak rate of meteors around 9 September.
• Total lunar eclipse at moonrise on Sunday 7 September.
• 20 September: Titan and its shadow transit Saturn together.
• Observe Mare Crisium on the Moon with binoculars.
• 19 DSO observing targets are listed for the month.
• Observe the globular cluster M15 in Pegasus during the month.
• Constellation of the month is Pegasus, which is well placed to observe.

See the links for the latest astronomy news:

• Cosmic butterfly reveals clues to Earth's creation.
• Fresh twist to mystery of Jupiter's core.
• RAS welcomes Herstmonceux lease deal.
• Rare quadruple star system could unlock mystery of brown dwarfs.
• C/2025 A6 (Lemmon).
• BAA Education and Outreach Section Newsletter Edition 3 – August 2025.
• A Guide to Delivering Effective Education and Outreach Activities (BAA).
• Deep Sky Update – July 2025.
• Gaia proves our skies are filled with chains of starry gatherings.
• Juice team resolves anomaly on approach to Venus.
• Hubble Homes in on Galaxy’s Star Formation.
• Is there life on Saturn's moon? Where there's water, there's a chance observe.

See pages 26-7 for images of the Pacman Galaxy in Cassiopeia and vdB 152 reflection/Barnard 175 dark nebula in Cepheus, taken by BAS member Chris Lee.

See pages 28-9 for photos from the recent solar observing at Troopers Hill.

Society News includes the programme of meeting and events up to the end of the year and information about the BAS subscription for 2025/26.