More and more satellites are going to obstruct the view for astronomers, but as Jo Marchant points out, it will also affect the cultural, spiritual and psychological aspects for everyone when they don’t have a clear view of the stars. Jo explains, in her book, The Human Cosmos: Civilisation and the Stars, how it is evident from ancient cave drawings that early man used the stars to mark the passage of time. She argues that the invention of mechanical clocks meant that we no longer needed to look to the sun and stars to mark time. So take off your watch, put away your phone, cover your digital clock and just take in the majesty of the stars. Jo Marchant is a New York Times bestselling author and speaker. Her writing explores the nature of humanity and our universe, from the mind-body connection to the mysteries of past civilisations and the awesome power of the night sky.