- Spokane (/spoʊˈkæn/ spoh-KAN) is the largest city and county seat of Spokane County, Washington, United States. It is in eastern Washington, along the Spokane River, adjacent to the Selkirk Mountains, and west of the Rocky Mountain foothills, 92 miles (148 km) south of the Canadian border, 18 miles (30 km) west of the Washington–Idaho border, and 279 miles (449 km) east of Seattle, along I-90.
- Earth–Moon system (Wikipedia)
The Earth and the Moon form the Earth-Moon satellite system with a shared center of mass, or barycenter. This barycenter stays located at all times 1,700 km (1,100 mi) (about a quarter of Earth’s radius) beneath the Earth’s surface, making the Moon seemingly orbit the Earth.
