- Review the other articles on this website for inclusion.
- Dick Wagner, the Founding Director of The Center for Wooden Boats, explores the ecology of the lake destined to unite the saltwater and freshwater sides of the Ship Canal. This essay was originally published on the CWB blog Shavings.
- Messier 4 (Wikipedia)
Messier 4 or M4 (also known as NGC 6121 or the Spider Globular Cluster) is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved.