Preparation rather than the flight itself is the subject here: a nuclear rocket under construction in Syldavia, a research centre leaking secrets, and a crew training for something nobody has done before.
Herge worked from what was publicly known about rocketry at the time, and the technical detail is unusually careful for a comic aimed at children. Calculus runs the project, Haddock resists the discipline it demands, and saboteurs inside the facility keep the pressure on right up to the launch. The story is the first half of a two-part arc, so it closes with the rocket leaving the ground rather than with an arrival anywhere. This edition runs to 62 pages and was printed in India.
On the page:
• First half of the two-part moon story
• A research centre setting with espionage running underneath
• Technical detail drawn from rocketry as it was then understood
• 62 pages in the standard album size
A good entry for readers who like science-flavoured adventure and for anyone assembling the series, an English edition available at Boipoka.