Wanderers, explorers, pilgrims, and wayfarers—we have always been a migratory species. From our nomadic beginnings to our treks across mountains, deserts, and vast uncharted oceans, our ancestors traversed every habitable continent of the planet. Natural curiosity, combined with an insatiable hunger for connection, still inspires explorations of the ocean floor, the stark face of the moon, and even the infinite, inscrutable expanse of the visible universe.