2026 Koshigaya City Children's Center Cosmos Stargazing: A Full-Day Course

Cosmos Children's Center (児童館コスモス) in Koshigaya City, Saitama Prefecture has a rooftop observatory equipped with a 40 cm reflecting telescope. An 'Autumn Starry Sky Exploration' stargazing event is scheduled for Saturday, October 24, 2026, from 7:00 to 8:00 pm. Capacity is 40 people (from elementary school students to adults; elementary and junior high school students must be accompanied by a guardian), and advance online application is required.