The Boeing Starliner (or CST-100) is a class of partially reusable spacecraft designed to transport crew to the International Space Station (ISS) and other low-Earth-orbit destinations. It is manufactured by Boeing, with the Commercial Crew Program (CCP) of NASA as the anchor customer. The spacecraft consists of a reusable crew capsule and an expendable service module.
The capsule has a diameter of 15 feet (4.56 m), slightly larger than either the Apollo command module or SpaceX Crew Dragon and smaller than the Artemis Orion capsule. Starliner can hold a crew of up to seven people and can remain docked to the ISS for up to seven months. The Starliner capsule is designed for reuse on up to ten missions. Starliner is launched on Atlas V from Space Launch Complex 41 at Cape Canaveral Space Force Station in Florida.