This Week’s Sky at a Glance, 2026 October 17 - October 24
This weekly astronomy guide provides details on celestial sightings, including the star Fomalhaut and the constellation Sculptor. It also includes local weather and observation event information for Saint John.
Why it matters
It serves as a practical resource for amateur astronomers and local residents interested in stargazing and regional weather patterns.
The western side of the Square of Pegasus points southward to the solitary bright star Fomalhaut in the mouth of Piscis Austrinus, the Southern Fish. Fomalhaut is the 17th brightest star in our night sky, and astronomers have known it is surrounded by discs of debris for many years. In 2008 an exoplanet was imaged near the inner edge of a disc but more recent images have shown it be an expanding disc of debris from a collision between two planetesimals. The eastern side of Pegasus points down to Diphda, the brightest star in the tail of Cetus the Whale. A circlet of stars well to the east forms the head of the whale.
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