Yuri #Gagarin: "The journey into the #cosmos is not an easy one. Those who have embarked on it are not fanatics, nor robots or little gears of the cosmic mechanism. They are brave and tenacious humans. Each of them has something unique." #HumanSpaceflightDay #CosmonauticsDay pic.twitter.com/BcYSPYcRNM

— Human Spaceflight (@esaspaceflight) April 12, 2018