version of the Classic Space astronaut was released with the book Lego Minifigure: A Visual History. Lego released an updated version of the Galaxy Explorer for their 90th-anniversary celebrations in 2022. Like the original, it included four astronaut minifigures, a robot, and a pull-out rover from the back but excluded the baseplate and satellite tower. Lego also released digital instructions for two alternate builds based on 924 "Space Cruiser" and 918 "Space Transport". There has been occasional references to Blacktron and other Space sub-themes in newer sets and minifigures as well. Related sets and themes Lego produced two sub-themes with space-related content for its Town line with Launch Command in 1995, and Space Port in 1999. Since 1999, Lego has produced sets based on the Star Wars franchise. Nearly 700 sets have been produced, six video games and numerous other licensed merchandise. 2003's Discovery theme produced six sets related to past and present NASA efforts at the time, including the Apollo Program, the Space Shuttle, the International Space Station, and the Mars Exploration Rover mission. In 2008, two fan-designed space sets were released through the Lego Factory theme, Star Justice and Space Skulls were fan-designed sets; they were special edition sets available only through Lego. In 2010, Lego released a set under its Toy Story theme called Buzz's Star Command Spaceship. Three more sets were released in 2022 for the spin-off film Lightyear, which is based on the Buzz Lightyear toy's background from that universe. Lego produced space themes for its Lego City line involving a realistic, Earth-based approach to space exploration: one in 2011, 2015, a Mars centric theme in 2019, and one in 2022 featuring both Mars and the Moon, These sub-themes are not considered to be official Lego Space themes. Since 2012, Lego has produced sets from both the Marvel and DC comic book universes, both of which feature many elements derived from space. In 2012, Lego released a set under its Ideas theme (known back then as Cuusoo) based on the spacecraft Hayabusa created by the Japanese Aerospace Exploration Agency (JAXA). In 2014, Lego Ideas released a set based on NASA's Curiosity rover. In 2015, Lego Ideas released a set based on the BBC science fiction TV series Doctor Who, along with two expansion packs for the toys-to-life video game Lego Dimensions. In 2017, Lego Creator released two space-related sets, 31062 Robot Explorer and 31066 Space