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.
NASA's Space Launch System rocket will reuse the RS-25D engine that took the Space Shuttle into orbit before its retirement in 2011. (Credit: NASA/KSC) In August 2013, NASA performed a hot fire test of the modified RS-25 engine, for which which will be used on the Space Launch System. (Credit: NASA/MSFC)