This month, The Sky at Night teams up with BBC Ideas to discover the secrets of archaeology and astronomy and to reflect on our ancestral skies. Throughout history and across the world, humanity has looked up and marvelled at the night sky. From ancient civilizations who were guided by the sun, moon and stars, to modern astronomers uncovering the universe's history, we have always found deep meaning in our dark skies. But is modern civilisation putting this important link at risk?