Released in 1979, LEGO 928 Galaxy Explorer is the European/international version of the US set 497. It contains 318 parts and 4 minifigures and represents one of the flagship models from the first wave of Classic Space. Designed in the unmistakable blue, light-gray and transparent-yellow colour scheme, the Galaxy Explorer has become one of the most recognizable and highly regarded sets from the entire Classic Space era.
Released in 1980, LEGO 6901 Mobile Lab is a distinctive six-wheeled scientific exploration vehicle from the early Classic Space era. BrickLink catalogs the set with 117 parts and 2 minifigures, while alternative inventories use different counting methodologies. The crew consists of one red and one white Classic Space astronaut.