Matt Gaw’s son mused that we spend 26 years of our life asleep, or if you’re my sister who is apt to like her long lies, 50 or her 60 years asleep. Gaw gives us a wake-up call in six chapters that begins in moonlight and ends in darkness. His family remain largely, unimpressed by his journey that takes him from his home in Bury St Edmonds, Thetford, the bright lights of London, Oban, and Isle of Coll, which is designated a Dark Sky Community. I...