1929

https://www.alamy.com/stock-photo-the-interplanetary-spacecraft-gelioraketoplan-valentin-glushko-s-graduation-22929658.html View: https://www.reddit.com/r/RadRockets/comments/gz9lwh/gelioraketoplan_energiaburan_designer_valentin/ Valentin Glushko's 1929 electric spacecraft design was...