Seeing the Northern Lights is probably the lifelong dream of many people, with wintry northern Finland a good place to try and catch these dashes of green across the night sky. After you’ve returned home, you’ll hear one question: “And did you see them?” One man who knows exactly where to find them is Thomas Kast. For years, the 45-year-old Finnish resident has been hunting for the spectacular light show in the sky with a lens and a tripod, sometimes even with tourists. We won’t catch a glimpse of it this evening, however. Because it’s snowing heavily outside the hotel, in the wintry solitude …