In Mohe, China, light pillars and the Orion constellation were captured together in a stunning display. Light pillars, unlike auroras, are caused by flat, fluttering ice crystals reflecting light from ground sources. These ice crystals usually evaporate before reaching the ground, but freezing temperatures allow them to form near the ground, creating a 'crystal fog.' The image, taken by Jeff Dai and featured on NASA's Astronomy Picture of the Day, shows light columns rising from the ground with Orion in the background.