With short days and long nights, more than #HalfTheParkIsAfterDark in winter! On clear nights, stars fill the sky over Yellowstone, and during the full moon, light reflecting off the snow beautifully illuminates the landscape. 🔭🌙 If you plan to stargaze or soak in the light of the moon this winter, be sure to dress in layers, as sub-zero temperatures are common at night in Yellowstone. Don’t forget to bring a flashlight, bear spray, and some friends!