“Upon consideration of the central question of the moon's toughness there can be little doubt. It is hella tough.” LittlesDoubtMoonToughConsiderationToughness Author:Plato
“Fear ringed by doubt is my eternal moon.” WorryDoubtMoonAnxietyEternalAnxiety And Worry Book:The Collected Poetry of Malcolm Lowry Source: The Collected Poetry of Malcolm Lowry
“There are countless space activities that would be no less exciting than the moon missions were, I have no doubt. The search for life on Mars, for example.” Would BeSpaceDoubtExampleActivityMoonExcitingMissionsNo DoubtMars Author:Neil deGrasse Tyson