Go stargazing. The winter air is less hazy and holds less moisture, resulting in clear skies. The cooler temps mean the popular viewing locations like state and national parks are less crowded, making for some great spots to take in the Orion, Taurus, Cassiopeia and the Andromeda Galaxy. And, if you’re far enough north, you may be able to catch the aurora borealis, or northern lights as they flicker across the night sky.