A purebred beagle. A purebred dog typically refers to a dog of a modern dog breed with a documented pedigree in a stud book and may be registered with a breed club that may also be part of a national kennel club. Purebred dog may also be used in a different manner to refer to dogs of specific dog types and landraces that are not modern breeds.
The SpaceX reusable launch system development program is a privately funded program to develop a set of new technologies for an orbital launch system that may be reused many times in a manner similar to the reusability of aircraft.
SpaceX Launch Vehicle Concepts (2010) â Image: SpaceX. While focusing on the evolution of its Falcon 9 and Falcon Heavy launch system and the implementation of re-usable rocket technology, SpaceX has also been working on concepts and designs for future heavy-lift and super-heavy lift rockets.