The USS Enterprise, also known as NCC-1701, is a fictional starship in the Star Trek media franchise. It is the main setting of the original Star Trek television series and several Star Trek films. The USS Enterprise is a Constitution-class starship, a type of heavy cruiser used by Starfleet in the 23rd century. It is commanded by Captain James T. Kirk and is one of the most iconic vessels in the Star Trek universe. The term 'starship' is often used interchangeably with 'SPACESHIP' to refer to the USS Enterprise, as it is capable of traveling through both space and time.