The Creator Advanced Models space sets focus on the space theme with two versions of the NASA Space Shuttle know as Shuttle Adventure and followed by Shuttle Expedition. While the 2 shuttle sets looked very simular the builds were very different.
Advanced Models, also known as Creator containes sets focused on the creative construction of LEGO System parts as opposed to playability functions of minifigures, alothough many sets do contain minifigures. These sets include buildings, trains, vehicles and other complex contruction sets. The Advanced Models/Creator sets initially began in 2000 and was a replacement for the LEGO Designer theme.