It has been said that we went to the moon to explore the moon, but while we were there, we looked over our shoulder and discovered Earth. Seeing the Earth in that perspective upgraded the firmware of all our brains, of everyone’s subconscious. Those missions sparked Earth Day, the Environmental Protection Agency, a comprehensive Clean Air Act… So much activism came from seeing that there’s no hint of anyone coming to help us from somewhere, that we’re here by ourselves on one planet.