“Yet of the 30 astronauts recruited into the Mercury Project and the successor Gemini and Apollo programmes – which ultimately set man on the Moon in 1969 – the marriages of only seven survived intact.”

http://www.telegraph.co.uk/news/worldnews/northamerica/usa/10150092/Drink-debauchery-and-despair-astronauts-wives-lift-lid-on-grim-reality-behind-the-smiling-Nasa-space-launches.html