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Wikipedia dicit:

The Boeing CST-100 Starliner (Crew Space Transportation) is a crew capsule manufactured by Boeing as its participation in NASA’s Commercial Crew Development (CCDev) program. Its primary purpose is to transport crew to the International Space Station (ISS) and to private space stations such as the proposed Bigelow Aerospace Commercial Space Station.

The capsule has a diameter of 4.56 meters (15.0 ft), which is slightly larger than the Apollo command module and smaller than the Orion capsule. The Starliner is to support larger crews of up to seven people and is being designed to be able to remain in-orbit for up to seven months with reusability of up to ten missions. It is designed to be compatible with four launch vehicles: Atlas V, Delta IV, Falcon 9, and Vulcan.

In the first phase of its CCDev program NASA awarded Boeing US$18 million in 2010 for preliminary development of the spacecraft. In the second phase Boeing was awarded a $93 million contract in 2011 for further spacecraft development. On August 3, 2012, NASA announced the award of $460 million to Boeing to continue work on the CST-100 under the Commercial Crew Integrated Capability (CCiCap) Program. On September 16, 2014, NASA selected the CST-100, along with SpaceX’s Crew Dragon, for the Commercial Crew Transportation Capability (CCtCap) program, with an award of $4.2 billion. On July 30, 2019, NASA had no specific dates for Commercial Crew launches, stating that this was under review pending a leadership change.

Starliner’s uncrewed test flight launched with the Atlas V N22, on December 20, 2019 from SLC-41 at Cape Canaveral, Florida. During the test, the Starliner experienced an anomaly that precluded a docking with the International Space Station. Two days after launch, on December 22, 2019 at 7:58 a.m. EST (1258 GMT), with the successful landing at White Sands, New Mexico, the CST-100 became the first-ever, crew-capable space capsule to make a land-based touchdown in the United States.

Video Credit: NASA