If you are looking for a "piece" in the context of a model or toy, the following building sets and collectibles are popular: The Space Shuttle - NASA
A complete Space Shuttle stack during launch consisted of four primary parts: nasa space shuttle
: The winged "spaceplane" that housed the crew and cargo, featuring three main engines and thermal protection tiles. If you are looking for a "piece" in
: Three high-performance engines at the rear of the orbiter that operated throughout the ascent. Model & Building Sets It was officially known as the Space Transportation
The was the world's first partially reusable low Earth orbital spacecraft system, operating 135 missions between 1981 and 2011. It was officially known as the Space Transportation System (STS) . The fleet consisted of six orbiters: Columbia , Challenger , Discovery , Atlantis , Endeavour , and the prototype Enterprise (which only performed atmospheric tests). Core Components
: The large orange central tank that provided liquid hydrogen and liquid oxygen to the orbiter's engines; it was the only non-reusable part.
: Two thin, white rockets that provided the majority of lift during the first two minutes of flight before being recovered for reuse.